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    An Energy Formulation for Parametric Size and Shape Optimization of Compliant Mechanisms

    Source: Journal of Mechanical Design:;1999:;volume( 121 ):;issue: 002::page 229
    Author:
    J. A. Hetrick
    ,
    S. Kota
    DOI: 10.1115/1.2829448
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: Compliant mechanisms are jointless mechanical devices that take advantage of elastic deformation to achieve a force or motion transformation. An important step toward automated design of compliant mechanisms has been the development of topology optimization techniques. The next logical step is to incorporate size and shape optimization to perform dimensional synthesis of the mechanism while simultaneously considering practical design specifications such as kinematic and stress constraints. An improved objective formulation based on maximizing the energy throughput of a linear static compliant mechanism is developed considering specific force and displacement operational requirements. Parametric finite element beam models are used to perform the size and shape optimization. This technique allows stress constraints to limit the maximum stress in the mechanism. In addition, constraints which restrict the kinematics of the mechanism are successfully applied to the optimization problem. Resulting optimized mechanisms exhibit efficient mechanical transmission and meet kinematic and stress requirements. Several examples are given to demonstrate the effectiveness of the optimization procedure.
    keyword(s): Optimization , Shapes , Compliant mechanisms , Mechanisms , Stress , Design , Force , Deformation , Mechanical drives , Motion , Finite element analysis , Displacement , Kinematics AND Topology ,
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      An Energy Formulation for Parametric Size and Shape Optimization of Compliant Mechanisms

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    http://yetl.yabesh.ir/yetl1/handle/yetl/122603
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    • Journal of Mechanical Design

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    contributor authorJ. A. Hetrick
    contributor authorS. Kota
    date accessioned2017-05-09T00:00:30Z
    date available2017-05-09T00:00:30Z
    date copyrightJune, 1999
    date issued1999
    identifier issn1050-0472
    identifier otherJMDEDB-27661#229_1.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/122603
    description abstractCompliant mechanisms are jointless mechanical devices that take advantage of elastic deformation to achieve a force or motion transformation. An important step toward automated design of compliant mechanisms has been the development of topology optimization techniques. The next logical step is to incorporate size and shape optimization to perform dimensional synthesis of the mechanism while simultaneously considering practical design specifications such as kinematic and stress constraints. An improved objective formulation based on maximizing the energy throughput of a linear static compliant mechanism is developed considering specific force and displacement operational requirements. Parametric finite element beam models are used to perform the size and shape optimization. This technique allows stress constraints to limit the maximum stress in the mechanism. In addition, constraints which restrict the kinematics of the mechanism are successfully applied to the optimization problem. Resulting optimized mechanisms exhibit efficient mechanical transmission and meet kinematic and stress requirements. Several examples are given to demonstrate the effectiveness of the optimization procedure.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleAn Energy Formulation for Parametric Size and Shape Optimization of Compliant Mechanisms
    typeJournal Paper
    journal volume121
    journal issue2
    journal titleJournal of Mechanical Design
    identifier doi10.1115/1.2829448
    journal fristpage229
    journal lastpage234
    identifier eissn1528-9001
    keywordsOptimization
    keywordsShapes
    keywordsCompliant mechanisms
    keywordsMechanisms
    keywordsStress
    keywordsDesign
    keywordsForce
    keywordsDeformation
    keywordsMechanical drives
    keywordsMotion
    keywordsFinite element analysis
    keywordsDisplacement
    keywordsKinematics AND Topology
    treeJournal of Mechanical Design:;1999:;volume( 121 ):;issue: 002
    contenttypeFulltext
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