| 二维变厚板的J积分分析 |
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| 引用本文： | 洪其麟,王革.二维变厚板的J积分分析[J].航空动力学报,1991,6(3):251-253,287. |
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| 作者姓名： | 洪其麟 王革 |
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| 作者单位： | 1.北京航空航天大学405教研室 |
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| 摘 要： | 本文将J.R.Rice提出的J积分公式扩充应用到二维变厚板。本文把变厚度的影响以修正项形式引入J积分公式,从而推导出二维变厚板的J积分扩充表达式。
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| 收稿时间： | 7/1/1990 12:00:00 AM |
J-INTEGRAL FOR2-D VARIABLE-THICKNESS PLATE |
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| Hong Qilin and Wang Ge.J-INTEGRAL FOR2-D VARIABLE-THICKNESS PLATE[J].Journal of Aerospace Power,1991,6(3):251-253,287. |
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| Authors: | Hong Qilin and Wang Ge |
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| Institution: | 1.Beijing University of Aeronautics and Astronoutics2.East-China Metallurgical Institute |
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| Abstract: | The formula of a J integral presented by J.R.Rice is extended to problem of 2 D variable thickness plates.The extended J integral formula is derived in terms of the path independent.Then the integral conservation is verified by using finite element method.At last,the calculation results for some variable thickness plates made of photoelastic material are compared with their photoelastic test data,and the differences between them are less than 4%.It is proved that the extended J integral formula for the 2 D variable thickness plates is path independent and can be taken as a fracture pamarater for damage tolerance analysis.Furtheremore,this integral can be solved numerically by using 2 D general finite element programs.It is therefore of practical value for the fracture analysis of Ⅰ mode cracked plate with thickness which does not vary too mueh. |
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