A new topology optimization method for planar compliant parallel mechanisms. (January 2016)

• Record Type: Journal Article
• Authors: Jin, Mohui; Zhang, Xianmin
• Is Part Of: Mechanism and machine theory. Volume 95(2016:Jan.)
• Page Start: 42
• Page End: 58
• Publication Date: 2016-01
• Subjects: Topology optimization -- Optimal synthesis -- Compliant parallel mechanisms -- Multi-DOF -- Compliant limbs; Machine theory -- Periodicals; Machinery -- Periodicals; Machines -- Périodiques; Génie mécanique -- Périodiques; Machine theory; Machinery; Periodicals; 621.81
• DOI: 10.1016/j.mechmachtheory.2015.08.016
• Languages: English
• ISSNs: 0094-114X

Abstract

Abstract: This paper presents a new method for the optimal synthesis of planar compliant parallel mechanisms (CPMs). The compliant limbs of CPMs are regarded as separate design domains of topology optimization problem. The finite element analysis (FEA) and matrix methods are combined to analyze the CPMs' Jacobian and stiffness matrices, based on which a new formulation is proposed for the topology optimization of multiple degree-of-freedom (DOF) compliant mechanisms. Without beginning with a known rigid-body mechanism, the proposed method finds the optimal topology of CPMs within the given design domains. The ability of the proposed method to find the optimal topology with complex kinematic behavior is demonstrated by several numerical examples and experimental study. Highlights: A new method for topology optimization of planar compliant parallel mechanisms The compliant limbs are regarded as the design domains of topology optimization. A new formulation based on the Jacobian and stiffness matrices Topology optimization of the multi-DOF compliant mechanisms The proposed method is verified by numerical examples and physical experiments.