| DRIVING FORCE AND DEFORMATION ANALYSIS FOR DYNAMIC CRACK PROPAGATION IN GAS PIPELINES UNDER DIFFERENT BOUNDARY CONDITIONS |
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| 作者姓名： | Zhuang Zhuo |
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| 作者单位： | Zhuang Zhuo(Department of Engineering Mechanics.Tsinghua University.Beijing 100084，China)
P.E.O'Donoghue(Department of Ciril Engineering.University College Dubliu.Earlsfort Terrace，Dubliu 2，Ireland) |
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| 摘 要： | In the light of a growing need for fracture control of rapid crack propagation(RCP)ingas pipelines,a program PFRAC(Pipeline FRacture Analysis Code)has been developed to analysethc various events.In this paper,by using PFRAC for the simulation of axial crack propagation in gaspipelines,a number of dynamic analysis issues rclating to boundary effects for uncracked and crackedpipes are investigated.This indicates that the boundary conditions along the length of the pipe play animportant role for fracture analysis in the pipe.In contrast.the boundary condutions at thc ends of along pipeline have little effect on the dynamic fracture events.
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| 收稿时间： | 15 April 1996 |
DRIVING FORCE AND DEFORMATION ANALYSIS FOR DYNAMIC CRACK PROPAGATION IN GAS PIPELINES UNDER DIFFERENT BOUNDARY CONDITIONS |
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| Zhuang Zhuo.DRIVING FORCE AND DEFORMATION ANALYSIS FOR DYNAMIC CRACK PROPAGATION IN GAS PIPELINES UNDER DIFFERENT BOUNDARY CONDITIONS[J].Acta Mechanica Solida Sinica,1997,10(1):86-94. |
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| Authors: | Zhuang Zhuo |
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| Institution: | (1) Department of Engineering Mechanics, Tsinghua Unirersity, 100084 Beijing, China;(2) Department of Civil Engineering, University College Dublin, Earlsfort Terrace, Dublin 2, Ireland |
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| Abstract: | In the light of a growing need for fracture control of rapid crack propagation(RCP)in gas pipelines,a program PFRAC(Pipeline FRacture Analysis Code)has been developed to analyse thc various events.In this paper,by using PFRAC for the simulation of axial crack propagation in gas pipelines,a number of dynamic analysis issues rclating to boundary effects for uncracked and cracked pipes are investigated.This indicates that the boundary conditions along the length of the pipe play an important role for fracture analysis in the pipe.In contrast.the boundary condutions at thc ends of a long pipeline have little effect on the dynamic fracture events. |
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| Keywords: | fracture mechanics finite element pipe boundary condition |
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