Design Optimization for Multiphysics Micro-actuators Via a Level Set Method
In this paper, a structural shape and topology optimization method is presented for multiphysics actuators using level set methods. A parameterization level set model is established by implicitly embedding the design boundary into the zero level-set of the level set function of higher dimension. The radial basis functions (RBF) with compact supports are introduced to interpolate the level set surface with a level of desirable accuracy and smoothness. In doing so, the original more difficult shape and topology optimization problem driven by the HamiltonJacobi partial differential equation (PDE) is transferred into a relatively easier size optimization of the expansion coefficients, to which the well-founded optimization algorithms such as optimality criteria and mathematical programming can be applied. Thus the design optimization is changed to an iterative numerical process to enable a sequence of motions of the boundary by updating the discrete level set surface. Two widely studied examples are used to demonstrate the effectiveness of this method.
Yu WANG Zhen LUO
School of Electrical, Mechanical and Mechatronic Systems, University of Technology, Sydney, NSW 2007, Australia
国际会议
The 4th International Conference on Mechanical Engineering and Mechanics(第四届国际机械工程与力学会议)
苏州
英文
727-732
2011-08-11（万方平台首次上网日期，不代表论文的发表时间）