Frontiers of Mechanical Engineering >
Understanding coupled factors that affect the modelling accuracy of typical planar compliant mechanisms
Received date: 04 Apr 2016
Accepted date: 09 May 2016
Published date: 29 Jun 2016
Copyright
In order to accurately model compliant mechanism utilizing plate flexures, qualitative planar stress (Young’s modulus) and planar strain (plate modulus) assumptions are not feasible. This paper investigates a quantitative equivalent modulus using nonlinear finite element analysis (FEA) to reflect coupled factors in affecting the modelling accuracy of two typical distributed-compliance mechanisms. It has been shown that all parameters have influences on the equivalent modulus with different degrees; that the presence of large load-stiffening effect makes the equivalent modulus significantly deviate from the planar assumptions in two ideal scenarios; and that a plate modulus assumption is more reasonable for a very large out-of-plane thickness if the beam length is large.
Guangbo HAO , Haiyang LI , Suzen KEMALCAN , Guimin CHEN , Jingjun YU . Understanding coupled factors that affect the modelling accuracy of typical planar compliant mechanisms[J]. Frontiers of Mechanical Engineering, 2016 , 11(2) : 129 -134 . DOI: 10.1007/s11465-016-0392-z
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