Analysis of frequency characteristics and sensitivity of compliant mechanisms

Based on a modified pseudo-rigid-body model, the frequency characteristics and sensitivity of the large-deformation compliant mechanism are studied. Firstly, the pseudo-rigid-body model under the static and kinetic conditions is modified to enable the modified pseudo-rigid-body model to be more suitable for the dynamic analysis of the compliant mechanism. Subsequently, based on the modified pseudo-rigid-body model, the dynamic equations of the ordinary compliant four-bar mechanism are established using the analytical mechanics. Finally, in combination with the finite element analysis software ANSYS, the frequency characteristics and sensitivity of the compliant mechanism are analyzed by taking the compliant parallel-guiding mechanism and the compliant bistable mechanism as examples. From the simulation results, the dynamic characteristics of compliant mechanism are relatively sensitive to the structure size, section parameter, and characteristic parameter of material on mechanisms. The results could provide great theoretical significance and application values for the structural optimization of compliant mechanisms, the improvement of their dynamic properties and the expansion of their application range.

[1]  Shihua Li.  Design and Analysis of Novel 3-RPC Flexible Precision Platform , 2013 .

[2]  Lei Wu,et al.  Analysis of the displacement of lumped compliant parallel-guiding mechanism considering parasitic rotation and deflection on the guiding plate and rigid beams , 2015 .

[3]  Nianfeng Wang,et al.  Pseudo-rigid-body model for corrugated cantilever beam used in compliant mechanisms , 2014 .

[4]  A. Midha,et al.  Parametric Deflection Approximations for End-Loaded, Large-Deflection Beams in Compliant Mechanisms , 1995 .

[5]  Sridhar Kota,et al.  An Energy Formulation for Parametric Size and Shape Optimization of Compliant Mechanisms , 1999 .

[6]  Xianhai Xie.  NEW ANALYSIS METHOD FOR COMPLIANT MECHANISMS BASED ON MULTI-RIGID-BODY DISCRETE ELEMENT MODEL , 2003 .

[7]  Kee-Bong Choi,et al.  Design and analysis of the single-step nanoimprinting lithography equipment for sub-100 nm linewidth , 2006 .

[8]  Qian Li.  Dynamic Modeling and Analysis of Compliant Mechanisms Based on 2R Pseudo-rigid-body Model , 2012 .

[9]  Robert Friedrich,et al.  Dynamic modeling and model order reduction of compliant mechanisms , 2015 .

[10]  Wenjing Wang.  Dynamic Analysis of Compliant Mechanisms Based on Finite Element Method , 2010 .

[11]  Xianmin Zhang,et al.  A new topology optimization method for planar compliant parallel mechanisms , 2016 .

[12]  Larry L. Howell,et al.  Dynamic Modeling of Compliant Mechanisms Based on the Pseudo-Rigid-Body Model , 2005 .

[13]  Yu Yueqing.  Dynamic Analysis of Compliant Mechanisms Based on Finite Element Method , 2010 .

[14]  Bin Zhang,et al.  Feature extraction method of bearing performance degradation based on time-frequency image fusion , 2013 .

[15]  Zhang Xianmin.  OPTIMAL DESIGN AND EXPERIMENTAL RESEARCH FOR MONOLITHIC SPACE 3-DOF PRECISE POSITIONING STAGE , 2007 .

[16]  Shanzeng Liu.  Kinematic and Dynamic Analysis of a Three-degree-of-freedom Parallel Manipulator , 2009 .

[17]  Zhao Jingyi.  SIMULATION AND EXPERIMENTAL ANALYSIS OF ELECTRO-HYDRAULIC STEERING CONTROL SYSTEM FOR TLC900 TRANSPORTING GIRDER VEHICLE , 2007 .

[18]  Shanzeng Liu.  Frequency Analysis of a Spatial Rigid-flexible Coupling Parallel Manipulator , 2011 .

[19]  Shusheng Bi,et al.  Design of compliant straight-line mechanisms using flexural joints , 2014 .

[20]  Changhao Li.  Research on High-cycle Fatigue Behavior of Spray Deposited SiCp/Al-20Si Composite , 2012 .

[21]  Zhe Li,et al.  DYNAMIC ANALYSIS OF COMPLIANT MECHANISMS , 2002 .