plasticity
Advanced UMAT Subroutine (VUMAT Subroutine) – Abaqus UMAT tutorial
This training package helps Abaqus users to prepare complex UMAT and VUMAT subroutines. This Abaqus UMAT tutorial package is suitable for those who are familiar with subroutine or want to learn UMAT/VUMAT subroutine Professionally. Equations for computational plasticity based on kinematic stiffness are also discussed. In addition, metal damage has been implemented based on Johnson Cook's model.
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Johnson Cook Abaqus plasticity and damage simulation
To drive new ideas, we occasionally need to modify the theory of Johnson-equations. Cook's As a result, we learn how to use the Abaqus model for Johnson Cook theory as well as how to create subroutines for this model in this training package. There are already two written subroutines. You will learn how to apply Johnson-Cook progressive damage in the second one after learning how to apply Johnson-Cook plasticity and damage initiation in the first.
Ductile Damage Abaqus model for 3D continuum element (VUMAT Subroutine)
In this package, the continuum damage mechanics framework for ductile materials is implemented and developed in ABAQUS by VUMAT Subroutine.
Constitutive modeling is treated within the framework of continuum damage mechanics (CDM) and the effect of micro-crack closure, which may decrease the rate of damage growth under compression, is incorporated and implemented.
The present package has been organized as follows. In the Introduction section, the basis of the CDM in ductile materials is explained, and the applications of the CDM are stated. In the Theory section, the CDM model formulation is briefly reviewed, and with micro-crack closure, the effect is described. In the Implementation section, an algorithm for the numerical integration of the damage constitutive equations is presented. In the VUMAT Subroutine section, the flowchart of the subroutine, and the subroutine structure, step by step, are explained in detail. How to run the VUMAT Subroutine in ABAQUS will be presented in this section. In the Verification section, the validation and verification of the numerical implementation will be evaluated, and the stability, convergence and accuracy of the results will be investigated. In the Application section, the applications of using the ductile damage model in mechanical processes are presented, and the prediction of damage growth and failure in mechanical processes is investigated.
Lemaitre Damage model implementation with VUMAT Abaqus
The Lemaitre damage model is now widely used to deal with coupled damage analyses for
various mechanical applications.
In this package, Firstly, we try to introduce the Lemaitre damage model, including damage mechanics and formulation of the Lemaitre damage model. Then, writing the Lemaitre subroutine is reached step by step. To do this job, the flowchart of the subroutine, Writing the subroutine line by line, implementation of the subroutine in one element and verification is done. In the last chapter, we implement this subroutine in a complex problem, the upsetting process.
Module by module Abaqus Training
If you are new to Abaqus software and the topic of finite element analysis, you definitely need to get acquainted with the user interface of this software and the general features of each module.
In this software, we perform different simulation steps in the following different modules and at the end, we receive the analysis results from the software solver.
In this package, you will learn how to work with the software in each module and perform your simulation in each module properly.
