Centre de ressources SIMULIA

The presented work depicts results of a two-scale approach to the problem of damage and failure prediction on laminated composite structures. Modeling on the micro-level has enabled insight into the underlying physical processes which lead to homogenized properties of the macro-scale material. In this work, micromechanical analysis has been performed by application of the High Fidelity Generalized Method of Cells theory (HFGMC), which is implemented into Abaqus via user material subroutine VUMAT. As result of the HFGMC analysis, micromechanical strain concentration tensors, which relate the strain tensor on the macro-level to the strain tensors of each subcell, have been computed.

Customer Papers

Assembly Modeling Specialist enables the user to easily manage model structure for large assemblies of parts and meshes, either created on the 3DEXPERIENCE platform or in other 3rd party tools. Automated creation of finite element model representations based on Meshing Rules, or User-Defined Procedures or imported from an external mesher is enabled in addition to management of links between assemblies, parts, meshes and documents . It is now possible to create high quality finite element models using Batch Modeling breakthrough technology, including the automated generation of idealized geometries that can be reused between several simulations.

Brochures

Accurate modeling and simulation of the effects of near-field blast events on vehicles and personnel is of interest to the Department of Defense. Applications include minimizing casualties and improving vehicle survivability from attacks using improvised explosive devices. The coupled Eulerian-Lagrangian (CEL) capability in Abaqus/Explicit was used to replicate experimental tests in which the structural response of varying metal panels subjected to the detonation of a buried charge was characterized. A Lagrangian representation was used for the test structure and panel and an Eulerian representation was used for the soil, explosive, and ambient air.

Customer Papers

Numerical validation of a mico-macro material model for solid-solid martensitic phase transformation (PT) of multi-variant mono-crystals at finite strains with comparisons to linearized strains is presented, using reliable experimental data. The material and numerical models are based on work by Govindjee and Miehe (2001) and by Stein and Zwickert (2006) at linearized strains and extended to finite strains by Stein and Sagar (submitted 2006). In the above mentioned works, C1 -continuous thermo-mechanical micro-macro PT-theory using Bain’s principle is presented by a unified Lagrangian functional including phase evolution equations with mass conservation and quasi-convexification of energy wells.

Customer Papers

The classical Rayleigh-Taylor (RT) instability appears in the interface between two fluids of different densities in a gravitatory field while the Richtmyer-Meshkov (RM) instability develops when a shock passes through such an interface. In both cases, the inevitable imperfections of the interface grow without bound. Conditions for the development of the RT and RM instabilities arise in the Laboratory of Planetary Sciences (LAPLAS) experiment that will be performed at Gesellschaft für Schwerionenforschung (GSI), Darmstadt, Germany, in the frame of the Facility for Antiproton and Ion Research (FAIR) facility. In this experiment, a multilayered cylindrical target is irradiated by means of an annular heavy ion beam in order to compress the inner sample without heating it.

Customer Papers

Simulation Asset Management provides a non-intrusive platform to capture workflows as designers and engineers interact with their respective tools. Key decisions such as the tools required, the versions to use, the necessary inputs and run options are automatically captured. As such Simulation Asset Management allows users to interact with all of the tools required to complete their work whilst providing critical traceability and repeatability.

Brochures

Oilfield casings employ threaded connections which are designed to provide both structural and sealing integrity under installation and service loads. This paper presents a finite element methodology for analyzing casing connections subjected to non-axisymmetric loads. The analysis approach can be used for assessing connection structural integrity, sealability and fatigue life.

Customer Papers

This work makes a revision of the main relative aspects of the nonlinear structural analysis in engineering plastic structures using the software ABAQUS Standard V6.5. Effects of temperature, mechanical effort, fluency and relaxation are considered. Mechanical properties of plastics were shown to be highly sensitivity with temperature. Then it ́s important that these kind of effects will be considered for most plastics structural analysis. Another important aspect is relative to time effects due to viscoelastic nature of polymers. The work validates experimental results relative to creep and relaxation through a numerical study coupling thermo-mechanical and viscous material effects.

Customer Papers

ADDITIVE MANUFACTURING FOR GENERATIVE DESIGN

Brochures

Stress Engineer delivers static, thermal, bucking and durability simulation capabilities for product behavior assessment on the 3DEXPERIENCE platform . It provides simulation-based design guidance during product development to improve product performance and quality while reducing the time requirement and cost of physical prototyping. To accelerate adoption of design simulation in the product development process, Stress Engineer is intuitive for design engineers, while still including the functionality required to simulate the complexities of real-world behavior accurately. Models built using Stress Engineer can be shared for collaboration with SIMULIA analyst tools, providing a unique and smooth workflow between product engineers and analysts.

Brochures

The Mechanical Analyst uses advanced finite element simulation techniques to understand and validate complex engineering problems. With an extensive toolset to enhance productivity and efficiency, the Mechanical Analyst is equipped to conduct structural static, dynamic, and thermal simulation of product designs and assemblies within the 3DEXPERIENCE platform. Fully integrated with both the environment and with the geometry, Mechanical Analyst provides a unique platform to collaborate, simulate, and impact design processes throughout the extended enterprise using state-of-the-art Abaqus simulation technology.

Brochures

The creep performance of plastics is one of the main criteria for a variety of applications with strict dimensional stability needs, including electrical/electronic parts and various automotive applications. However obtaining or generating accurate creep data is very difficult for both resin suppliers and product designers because the creep property is time dependent, which means it takes over several weeks or even a year time span. Hence a faster and more reliable method of predicting creep behavior of plastics is required when designing plastic products that will encounter long-term loading. This work presents an easy method for predicting the long-term creep behavior of plastics using the short-term creep experimental data.

Customer Papers