SIMULIA 리소스 센터

A cable grommet is a tube ring through which an electric cable passes. They are usually made of rubber or metal. The cable grommet is used to protect, improve friction or seal cables passing through it, from a possible mechanical or chemical attack and for aesthetic look. It becomes very important to determine the optimum length of the grommet used for particular application. Bigger length will have results into folding of grommet and lesser length will yield into stretching of rubber grommet. Finite element simulation technique presented in this paper can be used to determine the optimum geometry of the grommet. Component used for this study is an automotive door harness rubber grommet.

Customer Papers

Components made of short-fiber-reinforced plastics (SFRP) are stressed highly both mechanically and thermally. Therefore an intelligent component design is required in order to fully exploit the potential of these materials. Hence, the design of such components must be based on a reliable strength assessment. For this purpose models for the description of the anisotropic and elasto-plastic failure behavior of SFRP are required. In contrast to the widespread use of SFRP, methods for a reliable strength assessment based on FE analyses for components made of these materials have not been sufficiently developed yet. This paper presents an approach for the strength assessment of SFRP components based on FE analyses. In the scope of this appropriate failure limits and failure criteria for these materials are presented.

Customer Papers

More innovation using Cradle SC/Tetra and Abaqus for FSI simulations

Customer Papers

In research and development environment and concept design, people involved in new projects often need to design a completely new shape for the structure target of the analysis. The loading conditions and constraints are usually known but the designer hardly knows how to create the geometry of the structure that meets the requirements of the project and that can be manufactured at the same time respecting the target costs. In this paper is presented the topology optimization of a motorcycle swing arm, starting from a design space which takes into account the overall dimensions, and trying to minimize the mass while maximizing stiffness. The use of Tosca Structure, that drives the FEM simulation of the swing arm performed with Abaqus, allowed to obtain a shape that can be manufactured in compliance with the requirements of the project.

Customer Papers

Research Associate Stefan Sicklinger employed SIMULIA’s co-simulation engine (CSE) to link four physics—flow, structure, multi-body dynamics and control—into highly accurate 3D models of wind turbine startup, run and emergency braking. Abaqus FEA’s robust solver provided extremely realistic simulations of the flexible turbine blades during operation.

Tech Notes

This paper describes the behavior of the DuPont thermoplastic composite sheet offering, under the name DuPontTM VizilonTM and matches this to composite models as implemented in Abaqus. Subsequently, to obtain a more accurate description of the actual behavior of these materials, DuPont has developed a new material model by combining both plastic deformation of the thermoplastic matrix material with a more classical composite damage model for the description of the non-linear permanent deformation of the woven continuous fiber reinforcement and subsequent failure. The (current) results obtained with this model, implemented in Abaqus, are presented, demonstrating the potential of this model for thermoplastic composites.

Customer Papers

This paper presents several Finite elements modeling techniques for simulating and optimizing pipe bending process using Abaqus/Explicit. Designing and tuning pipe-metal forming tools are quite complicated and time consuming tasks. These tasks must take into consideration a number of potential issues, such as the rate of forming, pipe shape smoothness, reduction ratio of metal sheet thickness, and pipe metal wrinkling. This paper demonstrates Abaqus forming applications that helped resolve matters arising from realistic industrial forming design and production processes. Furthermore this paper argues the difference of three element types which are shell, continuum shell and solid.

Customer Papers

Current industrial state of the art for predictive engineering of fiber reinforced thermoplastic materials utilizes nonlinear isotropic material modelling and/or anisotropic linear modelling. Both approaches give inaccurate predictions, since the effect of the orientation and length of the fibers is not taken into account in the former. Whereas, the latter omits the plastic behavior typically observed in thermoplastics. An innovative approach is developed in the last years which takes into consideration the anisotropic nonlinear behavior of the material. This approach which is based on micromechanical homogenization theories that considers both correct processing and fiber orientation, can significantly improve the accuracy of mechanical predictions, but is unfortunately very costly in terms of analysis time.

Customer Papers

Application of Abaqus to Analysis of 3D Cracks and Fatigue Crack Growth Prediction

Customer Papers

It is usual that the loads applied on structural elements are in fluctuating situations. Sometimes the component can break under its ultimate or its yield strength. This breakage situation is due to the fluctuating loads that have been applied over long periods. For this purpose this breakage type is called “fatigue breaking”. Fatigue breaking is a consequence of crack growth. When no prototypes are available, it is necessary to calculate the life prediction as soon as possible. Simulation through the VPG is increasingly being used for life prediction. The present work shows a methodology that uses a finite element model (FEM) that runs on a proving ground. In this case, no MBS (multibody software) model is used to obtain the loads on the structure.

Customer Papers

In this paper, a fully- coupled, temperature- displacement analysis using Abaqus/Standard was carried out to take into the account both thermal and structural effects on the brake rotor. The effect on thermal performance of rotational speed (corresponding to braking conditions) and rotor temperature, due to the rotating heat source, has been evaluated. Disc thickness variations are shown to arise from the temperature profile across the disc cheek surface. The scenario simulated considers the thermal effect of braking a vehicle which was prone to generating an audible rumble noise. The simulation measured the thermal and geometric changes in the disc, demonstrating the disc thickness variation and thermal banding of the rotor, and the location of these on the disc surface due to the effect of the thermo-mechanical loading.

Customer Papers

Non-Crimp Fabrics (NCF) are widely used textile reinforcements in fibre reinforced composite structures. The most important prediction from a draping analysis featuring preforms from these materials is their resulting fibre orientations; the orientations influence several other properties including fabric permeability and final component strength. The analysis is complicated by the influence of localized stitching patterns and their constraint on relative sliding of individual layers within a single ply during the draping process. The modeling procedure involves a process of material characterization valid for fabric preform materials and has been carried out using the Abaqus/Explicit finite element analysis code.

Customer Papers

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