复合材料桥纤维拔出问题的动态裂纹模型

吕念春; 程云虹; 胥红敏; 程靳; 唐立强

复合材料桥纤维拔出问题的动态裂纹模型

1.
哈尔滨工业大学航天工程与力学系,哈尔滨 150001;
东北大学土木工程系,沈阳 110006;
沈阳工业学院材料科学与工程系,沈阳 110168;
哈尔滨工程大学建筑工程学院,哈尔滨 150001

详细信息

作者简介:
吕念春(1965- ),男,辽宁朝阳人,副教授,博士,主要从事复合材料断裂动力学方面的研究(E-mail.lnc_65@163.com);程靳(联系人.Tel:+86-451-86416375(o),+86-451-86414970;E-mail:hitwg@0451.com)

中图分类号: O346.1
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出版历程
- 收稿日期: 2002-08-13
- 修回日期: 2004-03-30
- 刊出日期: 2004-10-15

Dynamic Crack Models on Problem of Bridging Fiber Pull-Out of Composite Materials

1.
Department of Astronautics and Mechanics, Harbin Institute of Technology, Harbin 150001, P. R. China;
Department of Civil Engineering, Northeastern University, Shenyang 110006, P. R. China;
Department of Material Science and Engineering, Shengyang Institute of Technology, Shenyang 110168, P. R. China;
School of Architectural Engineering, Harbin Engineering University, Harbin 150001, P. R. China

摘要

摘要: 在一无限的正交各向异性体的弹性平面上，对具有桥纤维平行自由表面的一个内部中央裂纹，进行了弹性分析．提出了复合材料桥纤维拔出的一个动态模型．由于纤维破坏是由最大拉应力支配，纤维断裂并且裂纹扩展将以自相似的方式出现．通过复变函数的方法将所讨论的问题转化为Reimann-Hilbert混合边界值问题的动态模型，呈现一简单的和容易的解．求得了正交异性体中扩展裂纹受运动的阶梯载荷、瞬时脉冲载荷作用下问题的解析解，并利用这一解，通过迭加最终求得该模型的解．
- 桥纤维拔出 /
- 裂纹 /
- 动态模型 /
- 解析解
Abstract: An elastic analysis of an internal central crack with bridging fibers parallel to the free surface in an infinite orthotropic anisotropic elastic plane was performed.A dynamic model of bridging fiber pull-out of composite materials was presented.Resultingly the fiber failure is governed by maximum tensile stress,the fiber breaks and hence the crack extension should occur in self-similar fashion.By the methods of complex functions,the problem studied can be transformed into the dynamic model to the Reimann-Hilbert mixed boundary value problem,and a straightforward and easy analytical solution is presented.Analytical study on the crack propagation subjected to a ladder load and an instantaneous pulse loading is obtained respectively for orthotropic anisotropic body.By utilizing the solution,the concrete solutions of this model are attained by ways of superposition.
- bridging fiber pull-out /
- crack /
- dynamic model /
- analytical solution

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参考文献(18)

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复合材料桥纤维拔出问题的动态裂纹模型

作者简介:
吕念春(1965- ),男,辽宁朝阳人,副教授,博士,主要从事复合材料断裂动力学方面的研究(E-mail.lnc_65@163.com);程靳(联系人.Tel:+86-451-86416375(o),+86-451-86414970;E-mail:hitwg@0451.com)

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Dynamic Crack Models on Problem of Bridging Fiber Pull-Out of Composite Materials

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复合材料桥纤维拔出问题的动态裂纹模型

作者简介: 吕念春(1965- ),男,辽宁朝阳人,副教授,博士,主要从事复合材料断裂动力学方面的研究(E-mail.lnc_65@163.com);程靳(联系人.Tel:+86-451-86416375(o),+86-451-86414970;E-mail:hitwg@0451.com)

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出版历程

Dynamic Crack Models on Problem of Bridging Fiber Pull-Out of Composite Materials

计量

出版历程

目录

作者简介:
吕念春(1965- ),男,辽宁朝阳人,副教授,博士,主要从事复合材料断裂动力学方面的研究(E-mail.lnc_65@163.com);程靳(联系人.Tel:+86-451-86416375(o),+86-451-86414970;E-mail:hitwg@0451.com)