Dynamic Modeling and Experimental Verification of A Piezoelectric Valve Based on Compliant Mechanisms

An intensive study on the dynamic modeling and analysis of compliant mechanisms is presented in this paper based on the pseudo-rigid-body model. The pseudo-rigid-body dynamic model with single degree-of-freedom is proposed at first and the dynamic equation of the 1R pseudo-rigid-body dynamic model for a flexural beam is presented briefly. The pseudo-rigid-body dynamic models with multi-degrees-of-freedom are then derived in detail. The dynamic equations of the 2R pseudo-rigid-body dynamic model and 3R pseudo-rigid-body dynamic model for the flexural beams are obtained using Lagrange equation. Numerical investigations on the natural frequencies and dynamic responses of the three pseudo-rigid-body dynamic models are made. The effectiveness and superiority of the pseudo-rigid-body dynamic model has been shown by comparing with the finite element analysis method. An example of a compliant parallel-guiding mechanism is presented to investigate the dynamic behavior of the mechanism using the 2R pseudo-rigid-body dynamic model.

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Dynamic Characteristics of Planar Compliant Parallel-Guiding Mechanisms

Volume 2: 32nd Mechanisms and Robotics Conference, Parts A and B ◽

10.1115/detc2008-49234 ◽

2008 ◽

Cited By ~ 1

Author(s):

Wenjing Wang ◽

Yueqing Yu

Keyword(s):

Numerical Methods ◽

Rigid Body ◽

Natural Frequency ◽

Dynamic Modeling ◽

Dynamic Characteristics ◽

Compliant Mechanisms ◽

Design Parameters ◽

Dynamic Effects ◽

Body Model ◽

Rigid Body Model

Dynamic effects are very important to improving the design of compliant mechanisms. An investigation on the dynamic characteristics of planar compliant parallel-guiding mechanism is presented. Based on the pseudo-rigid-body model, the dynamic model of planar compliant parallel-guiding mechanisms is developed using the numerical methods at first. The natural frequency is then calculated, and frequency characteristics of this mechanism are studied. The numerical results show the accuracy of the proposed method for dynamic modeling of compliant mechanisms, and the relationships between the natural frequency and design parameters are analyzed clearly.

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Dynamic Modeling and Experimental Verification of Powered Parafoil With Two Suspending Points

IEEE Access ◽

10.1109/access.2020.2965541 ◽

2020 ◽

Vol 8 ◽

pp. 12955-12966

Author(s):

Panlong Tan ◽

Mingwei Sun ◽

Qinglin Sun ◽

Zengqiang Chen

Keyword(s):

Dynamic Modeling ◽

Experimental Verification ◽

Powered Parafoil

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Mono-stable and bi-stable magnetic spring based vibration energy harvesting systems subject to harmonic excitation: Dynamic modeling and experimental verification

Mechanical Systems and Signal Processing ◽

10.1016/j.ymssp.2019.106361 ◽

2019 ◽

Vol 134 ◽

pp. 106361 ◽

Cited By ~ 2

Author(s):

Hieu Tri Nguyen ◽

Dentcho Genov ◽

Hamzeh Bardaweel

Keyword(s):

Energy Harvesting ◽

Dynamic Modeling ◽

Experimental Verification ◽

Harmonic Excitation ◽

Vibration Energy ◽

Vibration Energy Harvesting ◽

Magnetic Spring ◽

Harvesting Systems ◽

Excitation Dynamic

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Dynamic Modeling and Optimal Design of a 2R Compliant Mechanism

Volume 5A: 41st Mechanisms and Robotics Conference ◽

10.1115/detc2017-68019 ◽

2017 ◽

Cited By ~ 1

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.

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

Journal of Mechanical Design ◽

10.1115/1.1900750 ◽

2005 ◽

Vol 127 (4) ◽

pp. 760-765 ◽

Cited By ~ 106

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.

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Kinetostatic and Dynamic Modeling of Flexure-Based Compliant Mechanisms: A Survey

Applied Mechanics Reviews ◽

10.1115/1.4045679 ◽

2020 ◽

Vol 72 (3) ◽

Cited By ~ 4

Author(s):

Mingxiang Ling ◽

Larry L. Howell ◽

Junyi Cao ◽

Guimin Chen

Keyword(s):

Dynamic Modeling ◽

Compliant Mechanisms ◽

State Of The Art ◽

Large Deflections ◽

Mechanical Behaviors ◽

Precision Engineering ◽

Open Problems ◽

Modeling Methods ◽

Dynamic Analyses ◽

Future Challenges

Abstract Flexure-based compliant mechanisms are becoming increasingly promising in precision engineering, robotics, and other applications due to the excellent advantages of no friction, no backlash, no wear, and minimal requirement of assembly. Because compliant mechanisms have inherent coupling of kinematic-mechanical behaviors with large deflections and/or complex serial-parallel configurations, the kinetostatic and dynamic analyses are challenging in comparison to their rigid-body counterparts. To address these challenges, a variety of techniques have been reported in a growing stream of publications. This paper surveys and compares the conceptual ideas, key advances, and applicable scopes, and open problems of the state-of-the-art kinetostatic and dynamic modeling methods for compliant mechanisms in terms of small and large deflections. Future challenges are discussed and new opportunities for extended study are highlighted as well. The presented review provides a guide on how to select suitable modeling approaches for those engaged in the field of compliant mechanisms.

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