Topology optimization design for micro compliant mechanism with two materials

Li Ren; Rui Yang; Dahai Mi; Dongming Guo

doi:10.1117/12.664803

2 May 2006 Topology optimization design for micro compliant mechanism with two materials

Li Ren, Rui Yang, Dahai Mi, Dongming Guo

Proceedings Volume 6042, ICMIT 2005: Control Systems and Robotics; 60424A (2006) https://doi.org/10.1117/12.664803
Event: ICMIT 2005: Merchatronics, MEMS, and Smart Materials, 2005, Chongqing, China

Abstract

From the viewpoint of reducing the local stress, prolonging the working life and improving the total performance of the mechanism, the two-material topology optimization design for the micro compliant mechanism was investigated. Taking the mechanical advantage of the mechanism as the objective function, a mathematical model was constructed and solved using the Method of Moving Asymptotes (MMA). The Element Free Galerkin (EFG) method based on the moving least squares (MLS) approximation was used as a tool for numerical analysis and the material thickness at the gauss points in the integration cells was taken as design variables, which can improve the computing precision. Aiming at the problem of discontinuity of material distribution just as checkerboard in optimization results, a sensitivity filtering technique was used so that a clearer topology image can be obtained. The effectiveness of the mechanism was verified by a numerical example for design of a micro gripper mechanism.

Citation Download Citation

Li Ren, Rui Yang, Dahai Mi, and Dongming Guo "Topology optimization design for micro compliant mechanism with two materials", Proc. SPIE 6042, ICMIT 2005: Control Systems and Robotics, 60424A (2 May 2006); https://doi.org/10.1117/12.664803

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