Using Viscoelastic and Path-Dependent Models for Analyzing the Curing Process in Fiber-Reinforced Composites With Abaqus subroutines

Original price was: € 290.0.Current price is: € 203.0.
Fiber-reinforced composites, widely used across various industries, consist of reinforcing fibers embedded in a matrix. During the curing process, this mixture transforms into a stable material. Curing is a critical step to ensure the durability and strength of the final product. In one of our intermediate packages, we used Abaqus to analyze the curing process in composites with linear elastic models. While these models are straightforward and user-friendly, their accuracy is limited because composites exhibit viscoelastic behavior during curing, rather than elastic behavior. To address this limitation, the current package introduces two more advanced and accurate models for analyzing residual stresses in composites: the viscoelastic model and the path-dependent model. These models offer significantly greater accuracy compared to linear elastic ones but involve added complexity. To simplify this complexity for users, the package begins with a comprehensive overview of the underlying theories and formulations for the viscoelastic and path-dependent models. It then provides detailed guidance on implementing these models using Abaqus subroutines. Finally, workshops are included to demonstrate how the viscoelastic model significantly improves the prediction of residual stresses in composites compared to the elastic models featured in our intermediate package.
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Abaqus Kelvin Voigt Model (Viscoelastic) Simulation Using UMAT and VUMAT Subroutines

Original price was: € 270.0.Current price is: € 189.0.

This research presents a precise three-dimensional mechanical response of viscoelastic materials using Abaqus kelvin voigt viscoelastic model. We performed this kelvin voigt model Abaqus simulation using both UMAT and VUMAT subroutines for standard and explicit solvers.

The behavior of viscoelastic materials is a state between the behavior of a liquid and a solid. In other words, they behave both like liquids and solids. That is to say, there are many natural and synthetic materials that are classified as viscoelastic materials; From the biological structures of the body such as skin, cartilage and tissue to concrete, foams, rubbers, and synthetic polymers. Due to these unique properties, viscoelastic materials have many applications.

In this regard, the primary goals of this study include the development and implementation of an accurate three-dimensional Abaqus kelvin voigt viscoelastic model, and the integration of viscoelastic properties into the analysis, which can improve the prediction of viscoelastic materials response under different boundary and loading conditions.

This tutorial, by customizing the UMAT and VUMAT subroutines to simulate flexible samples behavior, contributes to the advancement of viscoelastic materials design and analysis.

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Damage Prediction in Reinforced Concrete Tunnels under Internal Water Pressure

Original price was: € 370.0.Current price is: € 259.0.

This tutorial package equips you with the knowledge and tools to simulate the behavior of reinforced concrete tunnels (RCTs) subjected to internal water pressure. It combines the power of finite element (FE) modeling with artificial intelligence (AI) for efficient and accurate analysis. The Taguchi method optimizes the number of samples needed for FE analysis, and this method is used with SPSS after explanation its concept.

By leveraging Artificial Intelligence (AI) techniques such as regression, GEP, ML, DL, hybrid, and ensemble models,  we significantly reduce computational costs and time while achieving high accuracy in predicting structural responses and optimizing designs.

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Earthquake Damping in 8-Story Structure using Bypass Viscous Damper | Seismic Damping in Masonry Cladding

Original price was: € 230.0.Current price is: € 161.0.

In this package, the dynamic behavior of a developed bypass viscous damper is thoroughly evaluated as an advanced solution for earthquake damping. This innovative seismic damping device features a flexible, high-pressure hose that serves as an external orifice, functioning as a thermal compensator to reduce viscous heating during dynamic events. By adjusting the hose’s dimensions, the damper’s performance can be fine-tuned to provide optimal damping properties. Comprehensive simulations using CFD models in ABAQUS and structural analysis in SAP2000 validate the damper’s effectiveness. The package also offers a simplified design procedure for integrating these dampers into structures, demonstrated through an 8-story hospital case study, where the dampers significantly reduce structural demands and enhance the performance of nonstructural elements during seismic events.

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Abaqus advanced tutorials on concrete members

Original price was: € 250.0.Current price is: € 175.0.

Welcome to the "Abaqus Advanced Tutorials on Concrete Members" course, designed to provide civil and structural engineers with cutting-edge expertise in finite element modeling (FEM) and simulation using Abaqus. This advanced-level course focuses on the detailed modeling of complex concrete and composite columns under various loading conditions. Topics include the simulation of tubed reinforced concrete columns, concrete-filled double skin steel columns, and fiber-reinforced polymer (FRP) composite columns. Participants will delve into axial and eccentric compression loading scenarios, with a special focus on hollow and tapered cross-sections. The course also emphasizes comparing simulation results with experimental data from published research, ensuring practical relevance and accuracy. By the end of the course, learners will be equipped with the necessary skills to tackle advanced structural analysis challenges using Abaqus, reinforcing their understanding of concrete member behavior in real-world applications.

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Machine Learning for Composite Materials with Abaqus

Original price was: € 380.0.Current price is: € 266.0.

This tutorial package delves into an advanced inverse modeling approach for predicting carbon fiber properties in composite materials using a machine learning (ML) technique. Specifically, it covers the use of Gaussian Process Regression (GPR) to build a surrogate model for accurate predictions of fiber properties based on data from unidirectional (UD) lamina. By leveraging Finite Element (FE) homogenization, synthetic data is generated for training the GPR model, accounting for variations in fiber, matrix properties, and volume fractions. This framework’s efficiency and accuracy are validated using real-world data, highlighting its potential as a computational alternative to traditional experimental methods. The package includes detailed explanations, case studies, and practical exercises, equipping users with hands-on experience in applying this ML-based approach to composite material analysis.

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An Efficient Stiffness Degradation Composites Model with Arbitrary Cracks | An Abaqus Simulation

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Composite materials are critical in high-performance applications due to their exceptional strength-to-weight ratios and customizable properties. They are widely used in aerospace, automotive, and civil engineering. However, their complex structure makes them susceptible to various damage mechanisms, such as tunnel cracking and delamination, which can significantly affect their structural integrity. Accurate damage prediction is essential for effective use and maintenance. Traditional methods often rely on extensive experimental testing, but finite element analysis (FEA) has become a valuable alternative. Abaqus is particularly effective for modeling composite damage due to its comprehensive material modeling and customizable subroutines. The research presented utilizes Abaqus to develop a model for predicting Stiffness Degradation Composites laminates with arbitrarily oriented cracks, offering valuable insights into damage progression and stiffness loss under various loading conditions. To achieve this, UEL, UMAT, and DISP subroutines are used. Additionally, a Python script is provided to import the model into Abaqus.  

MASTER COMPOSITE SIMULATION IN ABAQUS

 1958.0
In this comprehensive online course, you'll explore composite material modeling using Abaqus software. We’ll guide you through the process of creating precise finite element models for various composites, including unidirectional, woven, and chopped fiber configurations. You'll also learn to model different types of damage within these composites, including wood composites like balsa wood. But the course goes further, equipping you to develop custom material models and damage functionalities using subroutines that build on Abaqus' built-in capabilities, such as 3D continuum, Hashin, and Puck models. Additionally, you'll delve into simulating curing and fatigue behavior in composites, applying these advanced techniques for more accurate analysis.

Analysis of Cold Rolled Aluminium Alloy Channel Columns With Abaqus CAE

Original price was: € 110.0.Current price is: € 77.0.
Cold rolled aluminium alloy channel sections are manufactured using a cold-rolling method that is faster and less energy-intensive than traditional methods. It reduces labor, material costs, and construction time. These sections are ideal for green and sustainable buildings due to their recyclability, lightweight nature, and corrosion resistance, making them suitable for various structural applications. This project guides you in using Abaqus for numerical analysis of cold rolled aluminium alloy channel columns to ensure their safety and performance under various loads. This enables you to achieve accurate designs for these members, preventing structural failures, inefficiencies, and increased costs.
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Seismic Analysis in Post-Tensioned Concrete Gravity Dam Design Using Abaqus Subroutines

Original price was: € 190.0.Current price is: € 133.0.
This project investigates the seismic analysis of post-tensioned concrete gravity dams. To achieve this, we utilized ABAQUS CAE with the UEL (User Element) subroutine. The project enhances the simulation of complex structural interactions, including inclined anchors and weak joints, which are crucial elements in concrete gravity dam design. Specifically, it provides a detailed comparison between transient and pseudo-static analysis results. This comparison is essential for understanding how the dynamic responses and structural behavior of these dams under seismic conditions can be effectively modeled and validated within the broader scope of concrete gravity dam design. Moreover, the project offers insights into potential debonding issues and their impact on post-tensioning forces, which are critical considerations in concrete gravity dam design. This research benefits civil engineers and academics by advancing the methodologies used for designing and analyzing the resilience of gravity dams, particularly in earthquake-prone regions.
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Advanced Finite Element Analysis of Off-Axis Tunnel Cracking Laminates

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The project investigates off-axis oriented tunnel cracking laminates. It focuses on cracks growing at an angle to the primary fiber direction in layered laminates. By examining factors such as ply thickness, crack spacing, and material properties, the study analyzes how these elements influence the energy release rate and mode mix during crack propagation. The project employs Abaqus CAE, along with UEL and UMAT subroutines, to model and analyze these cracks. It offers comprehensive insights into crack growth mechanics under various loading conditions. Moreover, a Python script is used to automate the entire simulation process. It handles tasks such as geometry creation, defining model properties, setting boundary conditions, generating and modifying input files, and post-processing. So, it enables us to calculate crack profiles and energy release rates. The project benefits researchers, engineers, academics, and industry practitioners by providing valuable methodologies and insights into the behavior of composite materials.

Bolting Steel to Concrete in Composite Beams: ABAQUS Simulation Validated Against Experiments

Original price was: € 140.0.Current price is: € 98.0.
Composite beams with welded stud shear connectors pose challenges in terms of disassembly and reuse, which impacts their sustainability. By bolting steel to concrete, we can aquire a more sustainable alternative, facilitating easier disassembly and reuse. Engineers value concrete-steel bolted shear connections for their fatigue resistance, secure connections, and ease of disassembly. These factors make them suitable for various applications. Proper design is crucial for these connections to ensure effective shear force transfer and durability. This project provides valuable insights into analyzing bolted concrete-steel connections. It helps utilizing advanced modeling techniques in ABAQUS to simulate their behavior under different loading conditions. By addressing the benefits and challenges of experimental and numerical methods, this project enhances our understanding of composite connections. It enables improved construction practices. To ensure model’s accuracy, we compared the results with the experimental data, for steel concrete bolts. The project specifically helps you to simulate the bahavior of steel concrete composite beams in the following paper. “A study on structural performance of deconstructable bolted shear connectors in composite beams”  
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Viscoplasticity Abaqus Simulation Using UMAT Subroutine | Perzyna Viscoplastic Model

Original price was: € 270.0.Current price is: € 189.0.

Viscoplasticity describes the rate-dependent inelastic behavior of materials, where deformation depends on both stress magnitude and application speed. This concept is crucial in many engineering applications, such as designing structures under dynamic loads, modeling soil behavior during earthquakes, and developing materials with specific mechanical properties. Viscoplasticity Abaqus simulation, especially using Abaqus with UMAT subroutines, are vital for understanding, predicting, and optimizing the behavior of viscoplastic materials. This tutorial focuses on implementing the Perzyna viscoplasticity model in Abaqus. The Perzyna viscoplastic model, a strain rate-dependent viscoplasticity model, relates stress to strain through specific constitutive relations. This involves defining plastic strain rate based on stress state, internal variables, and relaxation time. The tutorial provides general UMAT codes for viscoplastic analysis, yielding results like stress fields essential for various engineering applications. These simulations help in predicting permanent deformations, assessing structural failure points, and analyzing stability under different loads, benefiting fields such as aerospace, automotive, civil engineering, and energy.

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Abaqus User element tutorial | UEL advanced level

Original price was: € 270.0.Current price is: € 189.0.
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User element (UEL) subroutine (user-defined element) is the highest level of a subroutine that Abaqus offers to its users. This subroutine allows the user to program the basic building block of a finite element simulation. This subroutine becomes very powerful when the user wants to implement a type of element that is not available in Abaqus. Using this subroutine, user can define different types of shape functions, introduce element technology that is not available in Abaqus, or simulate multiphysical behavior that is not possible otherwise. This Abaqus user element tutorial package will give a brief introduction to the user element subroutine followed by theory and algorithm to write subroutine small strain mechanical analysis. First, we will highlight the UEL element stiffness matrix and element residual vector which are to be programmed in the first example. We will also cover shape functions and numerical integration. Next, we’ll talk about UEL inputs and outputs. The first example contains the detailed development procedure of a general-purpose subroutine for 2D plane-strain and 3D simulations using triangular, quadrilateral, tetrahedral, and hexahedral type of elements with reduced and full integration scheme. The second example demonstrates the procedure to build UEL-compatible model in Abaqus/CAE. It also demonstrates how to apply complicated boundary conditions with UEL as well as perform Abaqus analysis on structures which has standard and user elements. As an outcome, user can write their own UEL subroutine afterwards using this program as template.
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Pultrusion Crack Simulation in Large-Size Profiles | Pultrusion Abaqus

Original price was: € 250.0.Current price is: € 175.0.

Pultrusion is a crucial task for producing constant-profile composites by pulling fibers through a resin bath and heated die. Simulations play a vital role in optimizing parameters like pulling speed and die temperature to enhance product quality and efficiency. They predict material property changes and aid in process control, reducing reliance on extensive experimental trials. However, simulations face challenges such as accurately modeling complex material behaviors and requiring significant computational resources. These challenges underscore the need for precise simulation methods to improve Pultrusion processes. This study employs ABAQUS with user subroutines for detailed mechanical behavior simulations, including curing kinetics and resin properties. Key findings include insights into crack formation (pultrusion crack simulation), material property changes, and optimization strategies for enhancing manufacturing efficiency and product quality. This research (pultrusion Abaqus) provides practical knowledge for implementing findings in real-world applications, advancing composite material production.

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continuously reinforced concrete pavement​ (CRCP) Analysis

Original price was: € 210.0.Current price is: € 147.0.
(1)

The increasing adoption of continuously reinforced concrete pavement (CRCP) in highway pavement design is driven by its demonstrated superior performance. Critical to evaluating the long-term effectiveness of CRCP is the understanding of early-age cracks, which has garnered significant interest from highway departments. This Abaqus Continuously reinforced concrete pavement modeling project aims to establish precise design parameters for CRCP and analyze the formation of crack patterns. By accounting for stress factors such as environmental conditions and CRCP shrinkage modeling, the project offers valuable insights into predicting the likelihood of crack initiation and propagation within the concrete slab. These insights are instrumental in enhancing the durability and performance of CRCP structures, thus advancing the efficiency and effectiveness of highway infrastructure.

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Short fiber composite damage (Mean Field Homogenization Model)

Original price was: € 220.0.Current price is: € 154.0.
(9)
Short-fiber reinforced thermoplastics, popular due to their strength, lightness, and cost-effectiveness, are often manufactured using injection molding to create complex parts with dispersed short fibers. However, failure in these materials is complex, involving mechanisms like fiber cracking and plastic deformation. Current models for damage and failure are either macroscopic or simplified. A new method tackles this challenge by evaluating stiffness using continuum damage mechanics with a multistep homogenization approach. This new method is called “Mean Field Homogenization”. This approach involves a two-stage process: first, the fibers are split into groups (grains). Then, mean-field homogenization is employed within Abaqus using a UMAT subroutine to average stiffness across these phases, followed by overall homogenization. This use of mean-field homogenization Abaqus simplifies the modeling of the composite's intricate geometry. The method was validated through testing on a distal radius plate. Calibration was achieved through experiments, and the simulation was performed using Abaqus finite element software. It's important to note that the Abaqus short fiber damage mean field homogenization process was implemented within Abaqus through the INP code.
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Curing process simulation in Abaqus

Original price was: € 250.0.Current price is: € 175.0.
(12)
Fiber-reinforced composites have found widespread use across various fields due to their remarkable properties. This necessitates a careful design of their manufacturing processes to attain industrial application quality. The critical factor influencing their quality is the curing process, wherein the resin transforms into a solid state under temperature cycles. However, the challenge lies in achieving optimal curing quality while maintaining production efficiency. To overcome this challenge, an effective approach involves utilizing numerical simulations to optimize temperature cycles during curing. Nonetheless, creating such a model is complex as it must consider multiple factors concurrently, including temperature release from chemical reactions, shrinkage strains, and stress resulting from temperature variations, topics covered in this package. The package begins with an introduction to fiber-reinforced composites, exploring their advantages, applications, and categorization. It guides you through the fabrication process, detailing curing techniques and associated challenges. Furthermore, the package introduces constitutive equations for simulating the curing process and the necessary Abaqus subroutines for implementation. Additionally, two practical workshops are included to offer experience in modeling the curing process with Abaqus. These workshops enable you to evaluate internal heat generation and analyze strain and stress distributions. They not only provide guidance on simulation and subroutine implementation but also are provided for verification purposes.
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Johnson-Holmquist damage model in Abaqus

Original price was: € 220.0.Current price is: € 154.0.
(1)
The Johnson-Holmquist damage model is used in solid mechanics to simulate the mechanical behavior of damaged brittle materials over a range of strain rates, including ceramics, rocks, and concrete. These materials typically exhibit gradual degradation under load due to the development of microfractures and typically have high compressive strength but low tensile strength. In this package, there are 13 practical examples to teach you how to use this damage model. The workshops are categorized into Ceramic materials, concrete, glass materials, and others.
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Damage Properties of Thermoplastic Polymers with UMAT Subroutine

Original price was: € 320.0.Current price is: € 224.0.
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Thermoplastic polymers are materials composed of long molecular chains primarily consisting of carbon. These polymers possess the unique ability to be shaped and molded under heat and pressure while retaining their stability once formed. This high formability makes them widely used in various industries, including furniture production, plumbing fixtures, automotive components, food packaging containers, and other consumer products. This package introduces a thermodynamically consistent damage model capable of accurately predicting failure in thermoplastic polymers.  The implementation of this model is explained through the use of an ABAQUS user material (UMAT) subroutine. The package is structured as follows. The introduction section Provides an overview of thermoplastic polymers and their mechanical properties. In the Theory section, the constitutive damage model and its formulation are reviewed. Then, an algorithm for numerically integrating the damage constitutive equations is presented in the Implementation section. In the UMAT Subroutine section, a detailed explanation of the flowchart and structure of the subroutine is provided. Finally, two simulation examples, namely the T-fitting burst pressure test and the D-Split test, are performed and the obtained results, are investigated. Notice: Software files and A full PDF guideline (Problem description, theory, ...) are available; Videos are coming soon.
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UHPC (Ultra-High Performance Concrete) structures simulation in Abaqus

Original price was: € 170.0.Current price is: € 119.0.
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Ultra-High Performance Concrete structures refer to structures that are constructed using Ultra-High Performance Concrete (UHPC). UHPC is a specialized type of concrete known for its exceptional strength, durability, and resistance to various environmental and loading conditions. UHPC structures can include bridges, high-rise buildings, infrastructure components, architectural elements, and more. Simulating UHPC structures is of significant importance. Through simulation, engineers can analyze and predict the structural behavior and performance of UHPC under different loading conditions. This includes assessing factors such as stress distribution, deformation, and failure mechanisms. By simulating UHPC structures, engineers can optimize the design, evaluate the structural integrity, and ensure the safety and reliability of these complex systems. In this project package, you will learn simulating the UHPC structures with many practical examples. Here we have a special package for the UHPC Beams
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Ultra-High Performance Concrete (UHPC) beams simulation in Abaqus

Original price was: € 109.0.Current price is: € 76.3.
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UHPC (Ultra-High Performance Concrete) is an advanced type of concrete known for its exceptional strength, durability, and resistance. It consists of a dense matrix of fine particles, high-strength aggregates, and a low water-to-cement ratio. UHPC offers superior performance and is used in construction projects where high-strength and durability are required. UHPC (Ultra-High Performance Concrete) beams are advanced structural elements known for their exceptional strength, durability, and resistance. Simulating UHPC beams using software like Abaqus is crucial for evaluating their behavior under different loads and optimizing their design. With Abaqus simulations, engineers can analyze the structural response, stresses, and deformations of UHPC beams, ensuring they meet safety standards and design requirements. In this project package, you will learn how to simulate UHPC beams in 6 practical workshops.
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Friction Stir Welding (FSW) Simulation in Abaqus

Original price was: € 138.0.Current price is: € 96.6.
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Friction stir welding (FSW) is a solid-state joining process that utilizes a rotating tool to generate frictional heat, enabling the consolidation of materials without melting. FSW offers numerous benefits and is particularly valuable for welding challenging materials like aluminum alloys. It finds widespread applications in industries such as automotive, aerospace, shipbuilding, and construction, providing enhanced strength, weight reduction, and structural integrity. FSW minimizes distortion, reduces the need for post-weld machining, and eliminates issues related to solidification and cooling. Simulations using Abaqus, a popular finite element analysis software, play a crucial role in optimizing FSW processes. Engineers can investigate process parameters, evaluate weld quality, predict residual stresses and distortions, and optimize weld designs through Abaqus simulations. These simulations enable cost-effective development, improved weld quality, reduced material waste, and enhanced productivity in industrial applications. In this package, you will learn how to simulate FSW simulations in a variety of examples with different methods.
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Low-Velocity Impact simulation

Original price was: € 98.0.Current price is: € 68.6.
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Low-velocity impact refers to the collision between objects at relatively low speeds. While the impact energy may be lower compared to high-speed impacts, low-velocity impacts can still cause significant damage and deformation. Assessing the effects of low-velocity impact is crucial for various industries to ensure the structural integrity, safety, and performance of their products. For example, in the automotive industry, understanding the response of vehicles to low-velocity impacts is essential for designing crashworthy structures and improving occupant safety. In aerospace, assessing the impact resistance of aircraft components, such as fuselage panels or wings, helps ensure their ability to withstand ground handling incidents or bird strikes. In this package, you will learn how to do low-velocity impact simulations with several practical examples.
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