Abstract
In this paper, a nonparametric boundary shape optimization technique based on traction method considering die drawing and draft angle is proposed. Shape variation in general 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 of objective functional or constraint functional. A penalty term, denotes a virtual work by draft angle variation of boundary surface, is introduced into the equation oi virtual work in the shape variation analysis. An example of shape optimization problems considering the die drawing was analyzed using the technique. Appropriate result shape is obtained without any remarkable additional cost such as memory area, calculation time and troublesome optimization data preparation.
