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Finite Element Analysis
Finite Element Analysis for Stress
BEAR has the finite element (FE) capability to analyze large, complex, multi-body impact and dynamic problems in three dimensions (3D). Analysis results are available in the form of photo-quality prints or computer video files that can be viewed on any personal computer or displayed in the courtroom using a standard PC projector - there is no need for additional animation, as pictures and computer video of the results are generated automatically during the analysis.
Helicopter Rocker Arm
As an example, BEAR performed a detailed contact analysis of the sleeve assembly for a rocker arm in a helicopter engine. The finite element analysis demonstrated that the sleeve generated high stresses at the point of contact due to both bolting and system loads.
Buried Pipe
Another recent analysis involved a buried pipe within a plastic pipe subjected to repeated dynamic loads (water hammer). The 3D model revealed how the spacers between the pipes concentrated stresses in the outer pipe near connections. The soil surrounding the pipe and its effective stiffness were also included in the model.
Impact Analysis
This FEA capability allows us to perform full 3D impact analysis with multiple colliding bodies, including automobile collisions, crane tip-overs, ladder and chair accidents, and more. Rigid and deformable body motion can be analyzed, as well as models that contain both. (For example, in an automobile collision, the front of the automobile that deforms is modeled with deformable elements, and the rear of the automobile can be modeled as a rigid body to reduce the time necessary to run the analysis without losing significant information or accuracy.) These complex models can include human (dummy) components, as well as seat belts and airbags, to determine the dynamic response of a person in the analysis.
Failure or damage, such as tearing, fracture, and buckling, can be computed as a function of time for any components being modeled. This method can be applied to components made of ceramics, steel, plastic, concrete, soil, or any other material. If you would like more information, or have a problem you would like us to analyze, please call or email David Rondinone or Glen Stevick
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 Blue Fish
 The Gimp
 LinuxOS
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Copyright 2003 Berkeley Engineering and Research Incorporated
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