A FE Modeling and Validation of Vehicle Rubber Mount Preloading and Impact Response
A variety of rubber mounts are being used for vehicles as isolators/dampers between body and frame, on the engine cradle, etc. It has been the prevalent CAE practice in the auto industry to evaluate the mounts’ high-speed vehicle crash response by the means of nonlinear spring/beam models. However, the simplified models carry a risk of generating incomplete and erroneous results, especially under very complex crash loadings due to the absence of component contact and failure criteria. To alleviate the shortcomings of the simplified mounts, this paper presents a FE representation of a detailed vehicle rubber mount coupled with failure criteria and initial bolt wrenching (preloading) using LS-DYNA, as well as test validation of those mounts.
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A FE Modeling and Validation of Vehicle Rubber Mount Preloading and Impact Response
A variety of rubber mounts are being used for vehicles as isolators/dampers between body and frame, on the engine cradle, etc. It has been the prevalent CAE practice in the auto industry to evaluate the mounts’ high-speed vehicle crash response by the means of nonlinear spring/beam models. However, the simplified models carry a risk of generating incomplete and erroneous results, especially under very complex crash loadings due to the absence of component contact and failure criteria. To alleviate the shortcomings of the simplified mounts, this paper presents a FE representation of a detailed vehicle rubber mount coupled with failure criteria and initial bolt wrenching (preloading) using LS-DYNA, as well as test validation of those mounts.
05-3.pdf
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