Understanding coupled factors that affect the modelling accuracy of typical planar compliant mechanisms

Hao, Guangbo; Li, Haiyang; Kemalcan, Suzen; Chen, Guimin; Yu, Jingjun

Understanding coupled factors that affect the modelling accuracy of typical planar compliant mechanisms

Files

2986.pdf(747.24 KB)

Published Version

Date

2016-05-26

Authors

Hao, Guangbo

Li, Haiyang

Kemalcan, Suzen

Chen, Guimin

Yu, Jingjun

Publisher

Springer Verlag

Published Version

10.1007/s11465-016-0392-z

Abstract

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.

Keywords

Coupling factors , Modelling accuracy , Compliant mechanisms , Equivalent modulus

Citation

Hao, G., Li, H., Kemalcan, S., Chen, G. and Yu, J. (2016) 'Understanding coupled factors that affect the modelling accuracy of typical planar compliant mechanisms', Frontiers of Mechanical Engineering, 11(2), pp.129–134. doi: 10.1007/s11465-016-0392-z