| 基于伪随机点的薄壁件装配公差的有限元分析 |
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| 引用本文： | 周志革,崔根群,彭红梅,武一民.基于伪随机点的薄壁件装配公差的有限元分析[J].中国机械工程,2005,16(10):885-888. |
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| 作者姓名： | 周志革 崔根群 彭红梅 武一民 |
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| 作者单位： | 河北工业大学,天津,300132 |
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| 基金项目： | 河北省普通高等学校博士科研基金资助项目(B2001127) |
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| 摘 要： | 针对金属薄壁件刚性小、易变形等特点，提出了基于伪随机点和有限元方法对薄壁件的装配公差进行计算的方法。计算过程中，利用基于数论方法所产生的少量伪随机点代替随机点。算例结果表明，与影响系数法相比，计算精度基本相同。由于计算过程中不需要单独计算刚度矩阵，因此利用该方法可以同时考虑零件装配过程中的弹塑性变形。该方法与Monte Carlo法计算精度基本一致，而计算量仅为Monte Carlo法的1／15。
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| 关 键 词： | 薄壁件 装配公差 伪随机点 有限元方法 |
| 文章编号： | 1004-132X(2005)10-0885-04 |
Finite Element Analysis of Assembly Variation for Deformable Sheet Metal Based on Pseudo Random Numbers |
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| Zhou Zhige,Cui Genqun,Peng Hongmei,Wu Yimin.Finite Element Analysis of Assembly Variation for Deformable Sheet Metal Based on Pseudo Random Numbers[J].China Mechanical Engineering,2005,16(10):885-888. |
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| Authors: | Zhou Zhige Cui Genqun Peng Hongmei Wu Yimin |
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| Affiliation: | Zhou Zhige Cui Genqun Peng Hongmei Wu Yimin Hebei University of Technology,Tianjin,300132 |
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| Abstract: | For accounting the effects of low stiffness of sheet metals, the assembly variation was calculated by using finite element method and pseudo random numbers. Consequently, it is indicated that the method presented here has the same accuracy as the method of influent coefficient, and it can account for the effects of elastic and plastic deformable because of independent of stiffness matrix. Furthermore, it is simple and practical compared with the Monte Carlo method, and the calculation amount of random numbers can be decreased to 1/15 of later. |
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| Keywords: | sheet metal assembly variation pseudo-random number finite element method |
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