| 一般硬化材料板弹塑性弯曲的工程解法 |
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| 引用本文： | 吴国勋,张行.一般硬化材料板弹塑性弯曲的工程解法[J].北京航空航天大学学报,1994,20(1):63-70. |
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| 作者姓名： | 吴国勋 张行 |
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| 作者单位： | 北京航空航天大学飞行器设计与应用力学系 |
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| 摘 要： | 在小弹塑性变形范围内，首先将应力写成应变的奇次四项式的幂函数形式，使其相当精确地拟合材料的拉抻曲线，然后，用弹性板的位移模态和一待定系统构成板的弹塑性位移场，用最小势能原理确定该系数，从而得到板的封闭解。
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| 关 键 词： | 弹塑性 弯曲 弹性位移模态 |
AN ENGINEERING SOLUTION FOR THE ELASTOPLASTIC BENDING OF PLATES IN GENERL HARDENING MATERIALS |
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| Wu Guoxun, Zhang Xing.AN ENGINEERING SOLUTION FOR THE ELASTOPLASTIC BENDING OF PLATES IN GENERL HARDENING MATERIALS[J].Journal of Beijing University of Aeronautics and Astronautics,1994,20(1):63-70. |
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| Authors: | Wu Guoxun Zhang Xing |
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| Abstract: | The stress-strain relationship is written first as a homogenens power funetion with four terms, in order to fit the stress-strain curse of materials precisely in the range of small elas to-plastic deformation. Then. the displacement modes of elastic plates and an undeterminedcoefficient are introduced to form the elasto-plastic displacement field. Based on the principleof minimun potential energy. this coefficient is determined and the closed solution can be obtained. |
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| Keywords: | displacement modes elastic-plastic problems bending elastic displace ment mode principle of minimum potential energy |
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