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Please use this identifier to cite or link to this item: http://hdl.handle.net/11178/4584

Title: き裂先端近傍の弾塑性挙動に基づく非線形き裂力学の有効性(機械工学科)
Other Titles: The Effectiveness of Non-Linear Crack Mechanics Based on Elastic-Plastic Behavior near a Crack Tip(DEPARTMENT OF MECHANICAL ENGINEERING)
Authors: 寺西, 高広
西谷, 弘信
Teranishi, T.
Nisitani, H.
Aliabadi, M. H.
テラニシ
ニシタニ
Department of Mechanical Engineering, Kyushu Sangyo University / / Department of Aeronautics, Imperial College London
Keywords: Plasticity
Crack
Non-Linear Crack Mechanics
J-Integral
Finite Element Method
Issue Date: 20-Dec-2005
Publisher: 九州産業大学工学部
Abstract: The fracture of machines and structures is brought by the growth of a crack in most cases. Moreover the fracture occurs in some cases after producing large plastic deformation near the crack tip. Therefore the measure of mechanical severity of a cracked body in such a case is necessary to assure the occurrence of same phenomena in a cracked specimen and a real cracked object under large scale yielding. Recently, the non-linear crack mechanics was proposed by one of the authors. In this concept, the plastic strain at a crack tip obtained by the finite element method (FEM) is used as the measure of mechanical severity of a cracked body. In this paper, the effectiveness of the non-linear crack mechanics is discussed through the elastic-plastic behavior near a crack tip obtained by the FEM analysis under small scale yielding and large scale yielding.
URI: http://hdl.handle.net/11178/4584
Appears in Collections:第42号

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