基于GA和FEM的夹具布局和变夹紧力优化设计
OPTIMIZATION OF FIXTURE LAYOUT AND DYNAMIC CLAMPING FORCE BASED ON GENETIC ALGORITHM AND FINITE ELEMENT METHOD
查看参考文献9篇
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文摘
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通过夹具布局和夹紧力大小的优化可以提高薄壁件加工精度.建立了夹具布局和变夹紧力分层优化模型.首先,以工件加工变形最小化和变形最均匀化为目标函数,对夹具布局进行优化设计;其次,基于优化的夹具布局对变夹紧力进行设计.采用有限元法计算工件的加工变形,加工变形求解时综合考虑了接触力、摩擦力、切削力、夹紧力和切屑的影响.采用遗传算法求解优化模型,获得优化的夹具布局和变夹紧力.通过实例分析,验证了分层优化设计方法可以进一步减小工件加工变形,提高加工变形均匀度. |
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其他语种文摘
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In order to improve the machining accuracy of a thin-walled workpiece,the fixture layout and clamping forces should be optimized for the machining operation. A dual optimization model of fixture layout and dynamic clamping forces has been established. Fir stly,an optimal fixture layout is generated by considering the deformation degree and distribution. Thereafter,dynamic clamping forces are optimized based on the optimal fixture layout. The finite element method is used to analyze the workpiece machining deformation. A genetic algorithm is developed to solve the optimization model to obtain the optimal fixture layout and dynamic clamping forces. Finally,an example is used to illustrate that the optimization method can reduce the machining deformation effectively and improve the distribution condition. |
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来源
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数值计算与计算机应用
,2009,30(1):1-9 【核心库】
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关键词
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夹具布局
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遗传算法
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有限元
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变夹紧力
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优化
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地址
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南京航空航天大学机电学院, 江苏, 南京, 210016
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1000-3266 |
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学科
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自动化技术、计算机技术 |
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基金
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国家自然科学基金
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文献收藏号
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CSCD:3517888
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参考文献 共
9
共1页
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1.
Li B. Fixture clamping force optimization and its impact on workpiece location accuracy.
The International Journal of Advanced Manufacturing Technology,2001,17(2):104-113
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被引
17
次
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2.
Cogun C. Importance of the application sequence of clamping forces on workpiece accuracy.
ASME Journal of Engineering for Industry,1992,114(4):539-543
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被引
8
次
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3.
Wang Y F. Off-line modelling and planning of optimal clamping forces for an intelligent fixturing system.
INTERNATIONAL Journal OF MACHINE TOOLS & MANUFACTURE,1999,39(2):253-271
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被引
5
次
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|
|
|
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4.
De Meter E C. A model to predict minimum required clamp preloads in light of fixture-workpiece compliance.
INTERNATIONAL Journal OF MACHINE TOOLS & MANUFACTURE,2001,41(7):1031-1054
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被引
4
次
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5.
Deng H Y. Determination of minimum clamping forces for dynamically stable fixturing.
INTERNATIONAL Journal OF MACHINE TOOLS & MANUFACTURE,2006,46(7/8):847-857
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被引
5
次
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6.
Kulankara K. Machining fixture layout optimization using the genetic algorithm.
INTERNATIONAL Journal OF MACHINE TOOLS & MANUFACTURE,2000,40(4):579-598
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被引
4
次
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7.
Kulankara K. Iterative fixture layout and clamping force optimization using the genetic algorithm.
Journal of Manufacturing Science and Engineering,2002,124(1):119-125
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被引
8
次
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8.
周孝伦. 基于遗传算法的夹具布局和夹紧力同步优化.
机械科学与技术,2005,24(3):339-342
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被引
11
次
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9.
Nee A Y C. An intelligent fixture with a dynamic clamping Scheme.
Journal of Engineering Manufacture,2000,214(3):183-196
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被引
6
次
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