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Articles:2015,Vol:20,Issue(3):125-138 |
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Citation: |
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YANG Da-peng, PAN Hai-yang, ZHAO Yao, LI Tian-yun. Effeet of Hardening on Elastic-plastic Curved Crack Tip Displacement Under Dynamic Load[J]. International Journal of Plant Engineering and Management, 2015, 20(3): 125-138 |
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| Effeet of Hardening on Elastic-plastic Curved Crack Tip Displacement Under Dynamic Load |
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| YANG Da-peng1,2, PAN Hai-yang3, ZHAO Yao2, LI Tian-yun2 |
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1. Zhengzhou Technical College, Mechanical Engineering Department, Zhengzhou 450121, P. R. China;
2. Huazhong University of Science and Technology, School of Naval Architecture & Ocean Engineering, Wuhan 430074, P. R. China;
3. Zhengzhou Technical College, Urban Rail Transport Department, Zhengzhou 450013, P. R. China |
| Abstract: |
| In this article, elastic-plastic curved crack tip opening displacement maximum in hardened material under dynamic load has been studied, and curved crack tip opening displacement has been calculated as a practical application of a second order perturbation method and theorem of surname KA, where the effects of dynamic applied stresses and dynamic normal and shear stresses on the boundaries of plastic area are synthetically taken into considerations. Diagrams have been constructed to analyz the transformation relationships between the curved crack tip opening displacement and the work hardening exponents. Curved crack tip opening displacement will decrease with the increasing of hardening exponents in hardened material. The decrease extent of curved crack tip dynamic opening displacement will be more and more severe when hardening exponents increase evenly. Maximum dynamic opening displacement of curved crack tip will decrease when external load decrease with the same hardening exponents. |
| Key words:
dynamic load
hardened material
curved crack
a second order perturbation solution
CTOD
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| Received: 2015-08-06
Revised:
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| DOI: 10.13434/j.cnki.1007-4546.2015.0301 |
| Funds: The paper is by Henan Province Basic and Advanced Technology Research Plan Project(152300410003);The Training Program of the Major Research Plan of the National Natural Science Foundation of China(91016026) |
| Corresponding author: YANG Da-peng is doctor of Shipping and Ocean engineering college,Huazhong University of Science and Technology, now a associate professor in the Machine Engineering Department, Zheng Zhou Technical College. His research interests include engineering framework intensity of shipping and ocean. ydpzpysh@163.com
Email：ydpzpysh@163.com |
| Author description: PAN Hai-yang is now a assistant of Urban Rail Transport Department, Zheng Zhou Technical College. His research interests include measurement and control science and application. 494280720@qq.com;ZHAO Yao is now a professor in Shipping and Ocean engineering college, Huazhong University of Science and Technology. His research interests include engineering framework intensity of shipping and ocean. yzhaozzz@mail.hust.edu.cn;LI Tian-yun is now a professor in Shipping and Ocean engineering college, Huazhong University of Science and Technology. His research interests include engineering framework intensity of shipping and ocean. LTYZ801@mail.hust.edu.cn
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