| 线弹性广义界面层模型的研究 |
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| 引用本文： | 陈丽华,徐元铭,高小青.线弹性广义界面层模型的研究[J].力学与实践,2010,32(2):47-50. |
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| 作者姓名： | 陈丽华 徐元铭 高小青 |
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| 作者单位： | 北京航空航天大学 航空科学与工程学院飞机所 北京 100191 北京航空航天大学 航空科学与工程学院飞机所 北京 100191 |
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| 摘 要： | 为了用界面层方法分析一般结构中的裂纹扩展问题,提出了广义界面层的概念.基于能量释放率G相等的原则,对界面层的本构关系进行了线弹性等效.在此基础上,重点推导了含Ⅰ型裂纹双悬梁(DCB)的载荷-位移函数,并借助Abaqus软件对双悬梁的分层问题进行数值模拟.理论推导和数值模拟的结果证明了广义界面层的线弹性等效是可行的.
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| 关 键 词： | 广义界面层 能量释放率G 线弹性等效 分层 双悬臂梁（DCB） |
| 收稿时间： | 2009-07-08 |
THE RESEARCH ON LINEAR & ELASTIC EQUIVALENCE OF THE GENERALIZED COHESIVE INTERFACE |
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| CHEN Lihua
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XU Yuanming
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GAO Xiaoqin.THE RESEARCH ON LINEAR & ELASTIC EQUIVALENCE OF THE GENERALIZED COHESIVE INTERFACE[J].Mechanics and Engineering,2010,32(2):47-50. |
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| Authors: | CHEN Lihua XU Yuanming GAO Xiaoqin |
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| Institution: | */a>;1;No.650 Aircraft Design and Research Department of Hongdu Group/a>;Nanchang 330024/a>;China;School of Aeronautical Science & Engineering/a>;Beihang University/a>;Beijing/a>;100191 China |
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| Abstract: | In order to analyze the crack growth by the cohesive zone approach in a general structure,the concept of generalized cohesive interface is proposed.Based on the principle of the energy release rate and the linear elastic equivalence of the cohesive interface,the element's stiffness matrix is obtained.On this basis, the load/displacement function of the double cantilever beam(DCB) is obtained,under pure mode I condition. With the software BAQUS,the numerical simulation of delamination's growth is carried out... |
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| Keywords: | Generalized cohesive zone Energy release rate G Linear& elastic equivalent Delamination Double cantilever beam(DCB |
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