ABAQUS (software)

ABAQUS (software)
Name	ABAQUS (software)
Developer	Dassault Systèmes SIMULIA
Released	1978
Programming language	Fortran, C++
Operating system	Windows, Linux, Unix
Genre	Finite element analysis, Multiphysics simulation
License	Proprietary commercial software

ABAQUS (software) is a commercial finite element analysis and multiphysics simulation suite used for modeling complex structural, thermal, fluid-structure, and coupled-field problems. It is widely adopted in engineering and research environments for nonlinear, transient, and contact mechanics simulations, offering solver robustness, material modeling, and postprocessing. The suite is distributed by Dassault Systèmes under the SIMULIA brand and integrates with computer-aided engineering and product life-cycle platforms.

Overview

ABAQUS provides a set of solvers and pre/postprocessing tools that enable simulation workflows spanning static stress analysis, dynamic impact, thermal conduction, and coupled multiphysics phenomena. The package emphasizes nonlinear material definitions, advanced contact algorithms, and user-defined extensibility to address problems in structural mechanics, composites, geomechanics, and other domains. Users commonly combine the solvers with visualization and scripting to automate batch runs, parameter studies, and optimization loops.

History and Development

Development began in the late 1970s by a group of engineers who formed Hibbitt, Karlsson & Sorensen (HKS), aiming to provide nonlinear finite element capability for aerospace and civil engineering projects. During the 1980s and 1990s the software evolved through versions that expanded element libraries, material models, and contact formulations. In the early 2000s HKS was acquired and the product line was integrated into larger engineering software portfolios; subsequently Dassault Systèmes acquired the technology and rebranded it under the SIMULIA name. Throughout its history the suite incorporated advances from academic research groups and industrial partners, reflecting contributions from structural analysis, computational mechanics, and numerical methods communities.

Architecture and Components

The suite is structured into modular components including a preprocessing environment, multiple solver kernels, and postprocessing visualization. Key solver kernels address implicit, explicit, and coupled analyses: an implicit solver for quasi-static and steady-state problems, an explicit solver for highly nonlinear transient events such as impact and crash, and coupled-field solvers for thermo-mechanical and electro-mechanical problems. The ecosystem includes graphical interfaces for model assembly and meshing, command-line tools for batch execution on high-performance computing clusters, and file formats for data exchange. Integration layers enable connections with CAD/PDM systems, third-party optimization tools, and multiphysics frameworks.

Features and Capabilities

ABAQUS supports a comprehensive set of finite elements, including solid, shell, beam, and continuum elements, as well as enriched and higher-order formulations for accuracy in complex geometries. Advanced material libraries cover linear elasticity, plasticity, viscoelasticity, hyperelasticity, damage and failure, and user-defined constitutive laws via user subroutines. Contact mechanics offers penalty and Lagrange multiplier methods, frictional behavior, and surface-to-surface contact algorithms suitable for large deformations. Multiphysics coupling allows thermal–structural interaction, fluid–structure interaction when coupled with flow solvers, and electromagneto-mechanical analyses. Solver features include adaptive time stepping, nonlinear solution control, eigenfrequency extraction, modal dynamics, and steady-state and transient heat transfer. Postprocessing capabilities offer contouring, animation, field output, and integration with visualization tools for reporting and validation.

Applications and Industries

Engineers and researchers apply the suite across aerospace, automotive, civil infrastructure, energy, biomedical devices, and manufacturing sectors. In aerospace it supports composite wing design, fatigue life prediction, and bird-strike simulations. In automotive development it is used for crashworthiness, occupant safety, and NVH (noise, vibration, and harshness) studies. Civil engineering workflows employ it for soil–structure interaction, foundation settlement, and seismic response analysis. Energy industry use cases include wind turbine blade design, pipeline integrity, and pressure vessel assessment. Biomedical applications encompass implant mechanics, soft-tissue modeling, and prosthesis optimization. The software’s adoption in academic institutions facilitates method development in computational mechanics, fracture mechanics, and material modeling.

Licensing and Editions

The product is provided under proprietary commercial licensing, with tiered editions and modules tailored to solver types, material models, and high-performance computing options. Licensing schemes commonly include node-locked and floating licenses, with options for token-based or concurrent usage models. Specialized modules and add-ons expand capabilities for composites, explicit dynamics, heat transfer, and optimization. Academic and research licenses are available under specific terms to support curriculum and investigative projects, often with restrictions compared to commercial deployments.

Integration and Scripting

Automation and extensibility are supported through scripting interfaces and user subroutine frameworks. A Python-based scripting API enables model generation, job submission, and postprocessing automation compatible with numerical libraries and optimization frameworks. User subroutines written in Fortran or C/C++ permit custom material models, boundary conditions, and element formulations to implement novel constitutive relations or specialized algorithms. Interoperability with CAD systems and PLM platforms facilitates model parameterization and design iteration, while connections to high-performance computing schedulers and parallel solvers support large-scale simulations.