3138 A Shape Restriction Technique Using Multipoint Constraint on Traction Method
Details
In structural optimization, the shape of structure must be satisfied with some constraint conditions considering manufacturing process, mechanical symmetry and outward appearance. This paper describes a shape optimization technique for symmetrical structures using multipoint constraints based on traction method. Shape variation of traction method is obtained as a solution of a boundary value problem of linear elastic continuum loaded with traction in proportion to the shape gradient. In the shape variation analysis, multipoint constraints are introduced to keep the symmetry of the structure. This technique is applied to a simple optimization problem of circular cross section cantilever. The validity of this technique is confirmed by comparison between theoretical result and the numerical result. Furthermore, a numerical result of a shape optimization problem of a road wheel is shown as a practical application.
