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首页> 外文期刊>Mechanism and Machine Theory: Dynamics of Machine Systems Gears and Power Trandmissions Robots and Manipulator Systems Computer-Aided Design Methods >Substructure compliance matrix model of planar branched flexure-hinge mechanisms: Design, testing and characterization of a gripper
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Substructure compliance matrix model of planar branched flexure-hinge mechanisms: Design, testing and characterization of a gripper

机译:平面分支挠性铰链机构的子结构柔度矩阵模型:夹具的设计,测试和表征

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This paper proposes an analytical compliance-based matrix method to model the quasi-static, small-displacement response of planar branched flexure-hinge over-constrained mechanisms. It studies structurally-and kinematically-branched flexible mechanisms comprising several chains that are connected in complex series-parallel configurations and that are acted upon by multiple external/ reaction loads. These architectures are substructured or decomposed into simpler chains whose compliances are evaluated from known individual segment compliances. The substructured-chain compliances are subsequently combined with external loads to solve for unknown displacements and reactions and to further evaluate parameters relevant to the mechanism behavior. The method is applied to the design and analysis of a novel displacement-amplified gripper with right circularly corner-filleted flexure hinges. The mechanism's mechanical amplification, stiffness, and grip force are evaluated when either full or partial compliance (flexure-based only) is assumed. The analytical model predictions are confirmed by finite element analysis and by experimental testing of a proof-of-concept prototype. Subsequent analytical model simulation highlights the relationships between the main geometric parameters and the gripper's performance qualifiers. (C) 2015 Elsevier Ltd. All rights reserved.
机译:本文提出了一种基于柔度分析的矩阵方法,对平面分支的挠性铰链超约束机制的准静态,小位移响应进行建模。它研究在结构和运动学上分支的柔性机构,该机构包括以复杂的串并联配置连接并受多个外部/反应载荷作用的几条链。这些体系结构被子结构化或分解为更简单的链,其链的符合性是从已知的各个细分市场的合规性进行评估的。随后,将子结构链顺应性与外部载荷相结合,以解决未知的位移和反作用,并进一步评估与机械行为相关的参数。该方法适用于新型带有右圆角圆角弯曲挠性铰链的变位夹持器的设计和分析。当假定完全或部分顺应性(仅基于挠曲)时,将评估机构的机械放大率,刚度和抓地力。分析模型的预测通过有限元分析和概念验证原型的实验测试得到确认。随后的分析模型仿真突出显示了主要几何参数与抓爪性能指标之间的关系。 (C)2015 Elsevier Ltd.保留所有权利。

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