Topology optimization is used for obtaining the best layout of vehicle structural components to achieve predetermined performance goals. In this research, the topology design problem is formulated as a general optimization problem and is solved by mathematical programming methods so that the objective and the constraint functions can be any structural performance measure. Design variables for this formulation parameterie the material of each finite element. MSC/NASTRAN and CSA/NASTRAN finite element codes are employed for the response analyses. Several two and three-dimensional automotive examples including traditional applicatiosn in body and chassis structures, and new applications in spot weld/adhesive pattern and bead pattern designs are presented and discussed.
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