Dynamic Modeling and Experimental Study of Hybrid Compliant Mechanism Stretching Trapezoidal Membrane

2021 ◽  
pp. 107025
Author(s):  
Yu Zheng ◽  
Yang Yang ◽  
Shaofeng Han ◽  
Ke Ma
Keyword(s):  
Experimental Study ◽  
Dynamic Modeling ◽  
Compliant Mechanism

Dynamic Modeling and Optimal Design of a 2R Compliant Mechanism

2017 ◽  
Author(s):  
Wenshuo Ma ◽  
Yan Xie ◽  
Jingjun Yu ◽  
Xu Pei
Keyword(s):  
Optimal Design ◽  
Dynamic Model ◽  
Dynamic Modeling ◽  
Dynamic Characteristics ◽  
Natural Frequencies ◽  
Compliant Mechanisms ◽  
Compliant Mechanism ◽  
Dynamic Performance ◽  
Dynamic Problems ◽  
Numerical Result

Dynamic performance is of great importance to compliant mechanisms which are employed in dynamic applications, especially if the dynamic problems in DOC (degree of constraint) directions are to be met. An investigation on the dynamic characteristics of a 2R compliant mechanism is presented. Based on the substructure techniques, the in-plane dynamic model of the preceding compliant mechanisms is developed. The natural frequencies and sensitivities are then analyzed. The numerical result verifies the validity of the proposed method. Finally, optimal design of compliant mechanism is investigated.

Dynamic Modeling of Compliant Mechanisms Based on the Pseudo-Rigid-Body Model

2005 ◽  
Vol 127 (4) ◽  
pp. 760-765 ◽  
Author(s):  
Yue-Qing Yu ◽  
Larry L. Howell ◽  
Craig Lusk ◽  
Ying Yue ◽  
Mao-Gen He
Keyword(s):  
Rigid Body ◽  
Natural Frequency ◽  
Dynamic Modeling ◽  
Dynamic Equation ◽  
Compliant Mechanisms ◽  
Compliant Mechanism ◽  
Dynamic Equivalence ◽  
Body Model ◽  
Rigid Body Model ◽  
Flexible Mechanisms

Based on the principle of dynamic equivalence, a new dynamic model of compliant mechanisms is developed using the pseudo-rigid-body model. The dynamic equation of general planar compliant mechanisms is derived. The natural frequency of a compliant mechanism is obtained in the example of a planar compliant parallel-guiding mechanism. The numerical results show the effectiveness and advantage of the proposed method compared with the methods of FEA and flexible mechanisms.

Dynamic Modeling of a Piezo-Driven Compliant Mechanism Using Modal Analysis

2009 ◽  
Author(s):  
Ali Akbar Darki ◽  
Hassan Zohoor ◽  
Ali Reza Shahidi ◽  
Hamed Sanikhani
Keyword(s):  
Dynamic Behavior ◽  
Dynamic Modeling ◽  
Compliant Mechanisms ◽  
Compliant Mechanism ◽  
Mass Matrix ◽  
Functional Method ◽  
Reference Frequency ◽  
Similar Response ◽  
Algorithm Optimization ◽  
Fem Model

Dynamic modeling of piezo-driven compliant mechanisms is necessary to predict dynamic behavior of nanopositioning systems, and also to optimize their controlling methods. Dynamic tests on a real system or dynamic analyses on a FEM model is very time consuming when they must be carried out iteratively. According to previous works, obtaining static specifications of model is possible within a reasonable error margin. But all geometric dimensions and mass distribution details of the whole moving parts should be considered to calculate dynamic specifications of the model. In this paper, a functional method is described to obtain dynamic specifications of an planar compliant mechanism, by means of a reference Frequency Response Function (FRF) diagram. On the other hand, an equivalent analytical FRF is derived from the Mass-Spring model. A Genetic Algorithm optimization process is performed on the mass matrix for matching of the two FRF diagrams. Results show that a diagonal 3-by-3 mass matrix can nearly follow dynamic behavior of FEM model. It also is verified that results from the optimized dynamic model and the FEM model will have similar response to step excitation.

Distributed dynamic modeling and experimental study of PV evaporator in a PV/T solar-assisted heat pump

2009 ◽  
Vol 52 (5-6) ◽  
pp. 1365-1373 ◽  
Author(s):  
Jie Ji ◽  
Hanfeng He ◽  
Tintai Chow ◽  
Gang Pei ◽  
Wei He ◽  
...  
Keyword(s):  
Experimental Study ◽  
Heat Pump ◽  
Dynamic Modeling

Dynamic Modeling of Compliant Mechanisms Based on 2R Pseudo-Rigid-Body Model

2012 ◽  
Vol 163 ◽  
pp. 277-280 ◽  
Author(s):  
Wen Jing Wang ◽  
Shu Sheng Bi ◽  
Li Ge Zhang
Keyword(s):  
Dynamic Analysis ◽  
Dynamic Modeling ◽  
Compliant Mechanisms ◽  
Compliant Mechanism ◽  
Large Deflections ◽  
Flexible Link ◽  
Flexible Links ◽  
Body Model ◽  
Rigid Body Model ◽  
New Type

Compliant mechanism is a kind of new type mechanism and its analysis is very complex because flexible links often under large deflections which introduce geometry nonlinearities. A new model (2R PRBM) can simulate accurately both the deflection path and angle of the flexible link. A new dynamic model of compliant mechanism is developed using the 2R PRBM. The dynamic equation of planar compliant mechanism is derived. The dynamic analysis on the natural frequency of compliant mechanism is obtained in the example of a planar compliant parallel-guiding mechanism. The numerical results show the advantage of the proposed method for the dynamic analysis of compliant mechanisms.

Experimental study and numerical simulation of the large-scale testing of polymeric composite journal bearings: Three-dimensional and dynamic modeling

Wear ◽  
2011 ◽  
Vol 270 (7-8) ◽  
pp. 431-438 ◽  
Author(s):  
Ali Rezaei ◽  
Wouter Ost ◽  
Wim Van Paepegem ◽  
Patrick De Baets ◽  
Joris Degrieck
Keyword(s):  
Numerical Simulation ◽  
Experimental Study ◽  
Dynamic Modeling ◽  
Large Scale ◽  
Three Dimensional ◽  
Polymeric Composite ◽  
Journal Bearings ◽  
Large Scale Testing
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