🔍 finite element analysis for continuum mechanics of solid bodies

Tensor Toolbox for Modern Fortran

Basics to implement user-defined materials (usrmat, umat) in LS-Dyna with Fortran

User Material Model Implementation (UMAT) based on Finite Viscoelasticity Theory for Hydrogels in Abaqus

My Abaqus related stuffs (under development)

UMAT subroutines (for FEA code Abaqus) to model progressive damage/failure in FRP composites

UMAT for ABAQUS using 3D Hashin Based Orthotropic Damage Model

UMAT4COMSOL: An Abaqus user material (UMAT) subroutine wrapper for COMSOL

This is a nonlinear elastic constitutive model(Duncan-CHANG EB) UMAT widely used in the field of geotechnical engineering. It can be used in abaqus6.14-5 to calculate the dam settlement deformation.

This repository contains scripts for the batch generation of polycrystalline RVE models and finite element analysis operations. These scripts are used to simulate the generation of fatigue cracks in polycrystalline materials. The involved software includes Neper, Gmsh, and Abaqus 2022.

Comparison of Abaqus Library, UMAT, and Analytical Solution for Neo-Hookean Hyperelastic Material Under Large Deformations

A modern Fortran library for tensor calculus

Implementation of a new hybrid machine learning technique for multi-fidelity surrogates of finite elements models with applications in multi-physics modeling of soft tissues.

A Tsai-Wu based 2D Damage Model UMAT for ABAQUS (discontinued)

UMAT for ABAQUS using Mazars Concrete Damage Model with Fracture Energy Regularization

A Hashin 2D Damage Model UMAT for ABAQUS (discontinued)

This study introduces a novel method for analyzing residual stresses in composite materials: the Abaqus path-dependent curing model. The model is implemented within Abaqus CAE using Fortran subroutines like USDFLD, UMAT, HETVAL, UEXPAN, and DISP.

In this project, we modeled the fatigue behavior of a composite material in 3D space using the UMAT subroutine in Abaqus. The Abaqus .inp file and part of the UMAT subroutine are provided. To access the video tutorial and all the modeling files for this project, click the link below.

This project presents an innovative approach for examining residual stresses in composites: The Abaqus viscoelastic model for curing. The implementation of the model is carried out in Abaqus CAE, utilizing Fortran subroutines such as USDFLD, UMAT, HETVAL, UEXPAN, and DISP.

This code is the Fortran 77 version of the UMAT, FLOW, and SDVINI subroutines of the cartilage model, I firstly proposed in my Master's thesis. The model with minor modification was used in several publications.