Centro de recursos de SIMULIA

A wide range of loading conditions must be considered in the design of a tire. Computational simulations of a quasistatic, steady-state dynamic and nonlinear transient dynamic nature must be completed. In addition, the complexity and size of typical tire models highlight the need for efficient solution techniques.

Solution Briefs

Abaqus/CAE includes modeling and postprocessing capabilities for fracture mechanics analyses. These features provide interactive access to the contour integral fracture mechanics technology in Abaqus/Standard. Several fracture-specific tools are available, such as those for creating seam cracks, defining singularities, selecting the crack front and crack tip, defining q-vectors or normals to the crack front, and creating focused meshes. With these tools models can be created to estimate J-integrals, stress intensity factors, and crack propagation directions. In this technology brief a standardized compact tension specimen is modeled, and J-integral results are compared with those generated from applicable American Society for Testing and Materials (ASTM) standards and from a laboratory testing method. It is shown that Abaqus results are in very close conformance with the experimental results.

Solution Briefs

Linear-elastic fracture mechanics on the basis of advanced tools in FEM calculation (XFEM, contour integral) enable rapid and realistic evaluation of the fracture growth. This results in new possibilities, for example, for the derivation of testing intervals (damage tolerance analysis, contour integral) and for the carrying out of damage analyses. Using an industrial example, procedures and results of the Abaqus-supported determination of stress intensity factors will be explained. Considerations for the calculation of the fracture course with a dominant strain-induced load will be discussed.

Customer Papers

Maximizing gain while minimizing the possibility of feedback requires an optimal choice of design parameters. In this Technology Brief, we outline how Abaqus/Standard and Isight can be combined in a process to optimize the vibro-acoustic characteristics of hearing instruments.

Solution Briefs

Construction of earthen dams entails sequential placement and compaction of soil layers and the subsequent fill -up of the embanked reservoir. In the design of earthen dams, two potentially critical events must be considered: the rapid emptying (or drawdown) of the reservoir and the dynamic loading of an earthquake. The possibility of dam failure in these situations depends on the respective build -up and dissipation of the fluid pore pressure in the soil.

Solution Briefs

Assessing the strength of soil slopes and investigating the means for increasing their safety against failure are crucial in construction projects involving large soil masses. Slope stability analyses have traditionally been performed using a limit state approach. However, any presence of reinforcement or local heterogeneity necessitates the use of numerical techniques such as finite element analysis. Abaqus/Standard can be used for modeling reinforced soils and can thus help geotechnical engineers in determining optimal reinforcement sizes and placement configurations. Abaqus/Explicit can be used for modeling the failure as well as the movement of dislodged soil masses.

Solution Briefs

MODSIM enables accelerated, cost-efficient development

EBooks

Enables up-front realistic simulation of product assemblies under structural loading conditions extending DesignSight Structure to enable additional physics and productivity tools.

Datasheets

Electrically operated high temperature furnaces and reactors are used in many industrial manufacturing processes such as sintering or single crystal growth in order to allow for the required process conditions. In view of their outstanding characteristics refractory metals are ideally suited as materials for the resistive heating elements. Nevertheless, significant and lifetime-limiting irreversible deformations of these elements can be frequently observed which are assumed to be caused by a combination of temperature expansion, electromagnetic forces, and high temperature creep effects. In order to study this undesired behavior, a multi-physics model of a particular three-phase AC heating element of a sintering furnace is formulated and implemented within Abaqus.

Customer Papers

The use of composite materials in the aerospace industry is increasing. Composite materials offer a relatively high strength-to-weight ratio as well as the ability to create large, integrated structures. One composite component can replace 10 or more traditional metal parts, which can dramatically reduce manufacturing time and cost.

Solution Briefs

The use of Abaqus/CAE and Abaqus/Explicit to develop a process for predicting landing gear performance is outlined in this Technology Brief. By combining the automation and customization capabilities of Abaqus/CAE, the robustness of Abaqus/Explicit, and Unified Finite Element Analysis (UFEA) concepts, we show how the Abaqus product suite can be used to efficiently analyze mechanical systems.

Solution Briefs

Composite materials offer significant design advantages in the aerospace industry. High strength and light weight are the two most attractive features for aircraft and space vehicle designs. However, their complex material behavior makes analysis of these structures a significant challenge, particularly in a high speed impact event. The advanced composite modeling and industry leading simulation capabilities of Abaqus/Explicit make analysis of these challenging materials straightforward and allow accurate prediction of ballistic limit, damage and failure. This technology brief describes an analysis of the dynamic impact of a steel projectile onto a unidirectional carbon fibre reinforced plate and the specific advantages of Abaqus/ Explicit for this type of simulation.

Solution Briefs