Material
Foam simulation in Abaqus
Foam is a type of expanded plastic and rubber produced by forcing gas bubbles into a polymer material. It is a permeating, lightweight material. Along with corrugated packaging, foam fabric can protect goods during transportation. Foams, a novel family of ultra-light materials, have the capacity to undergo significant deformation at practically constant plateau stress, which allows them to absorb a significant amount of kinetic energy. In this tutorial package, you will learn how to analyze sandwich panels with an interior layer of foam, Foam-Filled Aluminum Tubes subjected to compressive loads, simulation of a reinforced foamed concrete beam, concrete-titanium foam panel explosion, etc. All of these cool practical examples with their complete tutorial videos are in this package which you can read their description below.
Simulation of woven composites damage in Abaqus
Woven composites are net-shaped composite structures that are fully interconnected by their yarns. Like a piece of cloth, the yarns are weaved together as warp and weft to create a composite structure. This package includes several components. First, it begins with an introduction to woven composites. Next, it provides a detailed explanation of macro modeling and offers guidance on how to perform it. The damage criteria employed in this package is a modified version of the Hashin criteria specifically designed for woven composites. Furthermore, the package demonstrates how to model damage using the USDFLD subroutine and Hashin relations. The subroutine is thoroughly explained, line by line, and a workshop is conducted to facilitate learning and practical application. Finally, the subroutine's validity is confirmed through a verification process.
Damage simulation of short fibre composites with subroutine
Short fiber composites consist of chopped fibers and a matrix, forming a discontinuous fiber-reinforced material, with fibers typically positioned either aligned or randomly within the matrix based on the intended application. In this training package, you will learn how to model the short fiber composite (SFC) damage in Abaqus based on this article: “Damage Modeling in Random Short Glass Fiber Reinforced Composites Including Permanent Strain and Unilateral Effect”. In the lesson one, you will learn the fundamentals such as the SFCs advantages, applications, and etc. Moving on to Lesson 2, the focus shifts to modeling Short Fiber Composites in Abaqus. The lesson introduces the critical decision between Macro and Micro modeling, which this package do a macro modeling. Lesson 3 advances the learning journey by exploring damage modeling in Short Fiber Composites, particularly through Dano's model. This macroscopic approach incorporates irreversible processes and internal variables, addressing anisotropic damage, unilateral effects, and residual effects. Lesson 4 bridges theory to practical application, guiding users on how to implement Dano's model in Abaqus through the VUSDFLD subroutine. The tutorial navigates through the subroutine's flowchart, explaining each line sequentially. Complementing the lessons are two workshops. Workshop 1 features a 2D composite plate with a hole using plane stress elements, offering a detailed breakdown of material properties, boundary conditions, and simulation procedures. Workshop 2, mirroring the first, employs shell elements, showcasing variations in element types while maintaining consistency with the utilization of the VUSDFLD subroutine.
Abaqus Soil Modeling Full Tutorial
All facets of soil modelling and simulation are covered in this full tutorial. The package includes twenty titles on topics such as soil, saturated soil, TBM, earthquake, tunnel, excavation, embankment construction, geocell reinforced soil, geosynthetic-reinforced soil retaining wall, soil consolidation in interaction with the concrete pile, earthquake over gravity dam, infinite element method, sequential construction, calculation of the total load capacity of the pile group, bearing capacity of the foundation. Package duration: +600 minutes
Abaqus steel material and structures Full Tutorial
Here in this training package, numerous models of crack steel material structures modeling, such as the shear failure, FLD criterion and different metal damage theories in concrete, steel, dams, and bones are examined through ten step-by-step tutorials. Every tutorial includes all needed files and step-by-step English videos and is explained from A to Z.
Balsa wood fatigue simulation with Abaqus subroutine
This training package focus on writing subroutines to simulate wood fatigue in Abaqus. In the "Balsa wood fatigue simulation with subroutine" package, the used fatigue theory of wood has been described. Then, the flowchart of the subroutine and writing subroutine line-by-line is explained. It helps users to develop the subroutine based on customized theory. Finally, the subroutine is implemented on the Abaqus model, and the results are discussed.
Fatigue damage simulation of short fibre composites with subroutine
Fatigue failure in materials occurs when repetitive or fluctuating stresses, below the ultimate strength and often below the yield limit, lead to sudden and unpredictable failure, making it a significant concern in engineering due to its potential for catastrophic consequences. The reinforced part of the fiber-reinforced composites can be categorized as continuous or discontinuous, with the latter referred to as short fiber-reinforced composites. In this training package, the fatigue of short (chopped) fiber composites is explained. Two fatigue damage models are presented for short fiber composites: Nouri fatigue damage model and Avanzini fatigue damage model. The Nouri’s model is applicable for composites with orthotropic behavior. But the Avanzini’s model has considered the fiber distribution in the matrix to be homogeneous and random. It has assumed the material behavior to be isotropic. Also, Nouri's model was developed for strain-controlled test, but Avanzini's model was developed for stress-controlled test. In this tutorial, we use the Avanzini’s model, which is base on this article: “Fatigue behavior and cyclic damage of peek short fiber reinforced composites”. This article has implemented the USDFLD subroutine, but we use the UMAT subroutine, which is more accurate than USDFLD since the material strength and properties reduction is smooth. A standard test specimen is used in this simulation to model such behavior. You will learn the details in the package.
Simulation of cohesive fatigue in Abaqus with subroutine
Simulation of woven composite fatigue in Abaqus
The training package focuses on simulating woven composite fatigue using Abaqus software and the modified Hashin fatigue damage model based on the article titled "Life prediction of woven CFRP structure subject to static and fatigue loading ". Woven composites have high strength and stiffness-to-weight ratios, but the interlacing pattern can affect stress distribution and damage mechanisms, making fatigue analysis crucial. The package includes four lessons covering different types of composite fatigue models, material characterization, generalization of the failure model, and the implementation of the UMAT subroutine. Two workshops provide hands-on experience in implementing the UMAT subroutine on one element in cyclic tension and a complex model. Fatigue analysis predicts material behavior under cyclic loading and helps design safe and reliable structures.
Simulation of SMA in Abaqus with UMAT
Shape-memory alloys (SMAs) have the ability to recover their original shape, thanks to the shape-memory effect and superelasticity. These unique characteristics have led to the broad usage of SMAs in engineering and medical applications. Simulations offer cost-effective methods for analyzing SMAs’ behavior, ultimately enhancing their reliability and performance. Consequently, researchers frequently employ simulations to investigate SMA-based systems. This educational package begins by exploring the fundamentals of SMA wires, presenting their various types and specific capabilities. It then provides the necessary constitutive equations to describe the behavior of SMAs in simulation. The package includes a flowchart and a step-by-step guide for writing a subroutine to model SMAs in Abaqus. Users will also discover a workshop that uses Abaqus to simulate the superelasticity effect in SMA wires. This workshop not only offers guidance on the simulation and the implementation of the subroutine, but also compares the result with an analytical solution for verification.
Simulation of composite Hashin damage in 3d continuum element in Abaqus (UMAT-VUMAT-USDFLD)
In this training package, the 3D continuum HASHIN damage initiation model is prepared via three subroutines (USDFLD, UMAT and VUMAT).This training package teach you subroutines line-by-line. It should be noted that after damage initiation, failure occurs suddenly and in the form of a reduction in properties in the model. The HASHIN theory for this package is based on Kermanidis article titled” FINITE ELEMENT MODELING OF DAMAGE ACCUMULATION IN BOLTED COMPOSITE JOINTS UNDER INCREMENTAL TENSILE LOADING “.
Composite simulation for experts-Part-1
If you are a graduate or Ph.D. student, if you are a university professor or an expert engineer in the industry who deals with simulation software, you are definitely familiar with the limitations of this software in defining the material properties, loading or meshing, interaction properties, and etc. You have certainly tried to define the properties of materials based on advanced fracture theories in finite element software and are familiar with their limitations and problems.
Now, here is your solution. Start writing subroutines in finite element software and overcome the limitations. With the tutorials in the Golden Package, you will learn how to write 8 subroutines in Abaqus software professionally.
3D continuum Abaqus HASHIN progressive Damage for composite materials (VUMAT Subroutine)
The Hashin failure criteria is a set of failure criteria developed specifically for composite materials. It predicts different failure modes in composites based on the stresses experienced by their constituents (fiber and matrix). The criteria are widely used in engineering and computational models to assess composite material performance under mechanical loading. The criteria, while highly efficient and widely used, pose challenges when implemented in numerical simulations. Abaqus has emerged as a powerful tool to address these challenges, enabling the prediction of damage initiation and its progression (via stiffness reduction) based on the Hashin criteria. However, a key limitation of Abaqus is its applicability being restricted to 2D plane stress elements. To overcome this limitation, we developed a VUMAT subroutine in this project. This custom subroutine extends the capabilities of Abaqus, allowing for the simulation of damage initiation and propagation in 3D problems in accordance with the Hashin criteria. It should be mentioned that this subroutine includes gradual progressive damage based on the energy method. This complex subroutine could be used for static and dynamic problems.
A notable point is that in one of our other packages, we also provide training on using Abaqus subroutines to analyze the Hashin criterion. However, in that package, damage occurs instantaneously. In the current package, we have modeled the progressive Damage, which is more complex but could be more beneficial for solving your specific problems.
Composite Fatigue Simulation with UMAT Subroutine in ABAQUS (unidirectional)
The composite fatigue training package completely teaches how to simulate and analyze a fatigue composite model with the help of UMAT Subroutine in Abaqus software. In this training package, we have provided all the files needed for your training, including articles, theories, how to write subroutines, and software settings.
Simulation of Unidirectional Composite Damage in ABAQUS
This package is about Unidirectional Composite Damage tutorial and applies various theories to initiate and progress damage in composite materials based on ABAQUS capabilities for different elements. As you know, according to the modeling done by the micro or macro method, the way of defining the Abaqus composite damage completely follows the separate method in ABAQUS. This training package is customized for Abaqus composite macro modeling. There are 5 different unidirectional composite examples to help you master unidirectional composite simulations and Abaqus composite laminate damage modeling. You can see the examples in the syllabus below.
Abaqus Concrete structure Modeling Full Tutorial
The package includes 19 workshops on topics such as concrete, beam-column structures, composites, steel rebars, Ultra-High-Performance-Fiber-Reinforcement Concrete columns, CFRP bars, hollow-core square reinforced concrete columns wrapped, damaged concrete beams, High Strength Concrete(HSC),ECC/Concrete Composite Beam-Column Joints, circular concrete-encased concrete-filled steel tube (CFST) stub columns, and etc. Every tutorial includes all needed files and step-by-step English videos and is explained from A to Z. Package duration: +600 minutes
Concrete reinforcement and column beam joint structures in ABAQUS
Abaqus composite modeling of Woven & Unidirectional + RVE method
This training package provides comprehensive basic information and examples on for composite modeling in ABAQUS FEM software in accordance with subsequent packages. The methods of modeling these materials are in two ways: micro and macro, which vary according to the type of material selected and how they are used. Next packages focus on two modeling types professionally.
Implementation of Cohesive by interaction & element based methods in ABAQUS
This package teaches you how to choose the method and apply cohesive modeling for various simple and complex problems. The training package also teaches you how to define the basic geometry of the adhesive elements and how to define the mechanical behavior in elastic and damaged regions in ABAQUS FEM software.