This paper presents a simplified simulation technique for orthotropic viscoelastic films. Wrinkling is detected by a combined stress-strain criterion and an iterative scheme searches for the wrinkle angle using a pseudo-elastic material stiffness matrix based on a nonlinear viscoelastic constitutive model. This simplified model has been implemented in ABAQUS/Explicit and is able to compute the ...

Abaqus is often applied to solve geomechanical boundary value problems. Several Abaqus built-in features enable a wide range of simulating such problems. For complex problems Abaqus can be extended via user subroutines. Several extensions for soil mechanics purposes are discussed and corresponding case studies are presented.

Rock bursts are a natural phenomenon that caused by high stresses and faults within the deep geological profile. The framework mining excavations, comprising various rock face supports such as cable bolts, is required to withstand bursts. These mechanisms subject static dynamic loading conditions which possess unique challenges. This study focused on shearing impact of loads key structural supp...

In the present study, stress analysis and explicit solution of rectangular plate with arbitrarily located circular hole, subjected to linear normal stresses on two opposite edges, has been investigated. Airy function and hoop stresses occurring at the edge of the circular have been computed. In this method 2D dimension elasticity and Airy stress function was used. The present method for explici...

Engineers from wide ranges of industries face an ever increasing need to run virtual tests to simulate complex models for improving reliability as well as reducing product development time and costs. Abaqus Unified FEA is designed to tackle these challenges by producing high-quality realistic simulation solutions, while delivering high performance in productivity by utilizing efficient use of m...

Many models are complex systems comprised of numerous different sub models. These sub models could be subjected to different load types, i.e. long duration or short duration, which would be better treated using a different type of discretization techniques and solution algorithms [1]. This problem can be addressed by Co-simulation which is the coupling of different simulation systems that excha...

This study examines a new approach to facilitate the convergence of upcoming user-subroutines UMAT when secant material matrix is applied rather than conventional tangent (also known as Jacobian) matrix. algorithm makes use viscous regularization technique stabilize numerical solution softening models. The Newton–Raphson predictor-corrector ABAQUS then applies this type using only When time ste...

Over the past three years, BMW has undertaken a significant project to first investigate, then proceed with migration from its present crash simulation software to ABAQUS. This project has been motivated by a growing recognition within BMW that, in order to advance its crash simulation methods, improved robustness in the software employed, along with a greater emphasis on physically-motivated s...

The present work describes a multiscale methodology which has been developed for modeling of impact damage in the laminated composite structures. The methodology employs the High Fidelity Generalized Method of Cells (HFGMC) micromechanical model for the prediction of the local stress and strain fields, within the representative unit cell of the unidirectional composite material. The Mixed Mode ...