A Physical Deformation Method Based on Shape Constraint for Product Shape Design

Abstract

In this paper, a modeling method based on physical deformation is described. The proposed method is designed to solve the modeling of deformation products with requirements such as a local shape requirement or space assembly. It is utilized to designing products by analogy to balloon inflating, and the deformation process obeys physical laws of motion. First of all, the boundary of spatial constraint of deformable component is obtained according to design requirements and assembly environment. Secondly, component is initialized by a simplified mass-spring model, and the process of expansion is simulated by increasing the internal pressure until the deformation extent meets the needs. Finally, several examples are illustrated for verifying this method. Comparing to traditional design method, this method gets concept model under the condition of design constraint firstly, then regards the concept model as references for detail design. Therefore, the idea can avoid repeated modification of artificial design and shorten design period significantly.