Strip model plasticity analysis of mixed mode crack opening displacement in aluminum alloy LY12

J. B. Sha; P. Zhu; Z. J. Deng; H. J. Zhou

doi:10.1016/S0167-8442(96)00029-8

Strip model plasticity analysis of mixed mode crack opening displacement in aluminum alloy LY12

J. B. Sha^*
, P. Zhu
, Z. J. Deng
, H. J. Zhou

^*Corresponding author for this work

Guang Dong Institute of Technology
Xi'an Jiaotong University

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

Abstract

Under mixed mode loading, the crack tip blunts and undergoes displacements in two directions, the normal and shear component corresponding to Mode I and Mode II loading, respectively. These local displacements are determined by the duplicated film method and used to analyze the behavior of mixed mode fracture in aluminum alloy LY12. The mixed mode resultant crack opening displacement (COD) at fracture initiation tends to increase more rapidly with increase of the Mode II shear component. The fracture initiation value of COD for pure Mode II loading is six (6) times greater than that for Mode 1 loading. The same applies to the maximum effective plastic strain crack growth near the crack front. Observed are two typical morphologies, the equal-axes dimples and the parabolic dimples with evidence of slippage as dominated, respectively, by Mode I and Mode II loading.

Original language	English
Pages (from-to)	13-21
Number of pages	9
Journal	Theoretical and Applied Fracture Mechanics
Volume	26
Issue number	1
DOIs	https://doi.org/10.1016/S0167-8442(96)00029-8
State	Published - 1997
Externally published	Yes

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title = "Strip model plasticity analysis of mixed mode crack opening displacement in aluminum alloy LY12",

abstract = "Under mixed mode loading, the crack tip blunts and undergoes displacements in two directions, the normal and shear component corresponding to Mode I and Mode II loading, respectively. These local displacements are determined by the duplicated film method and used to analyze the behavior of mixed mode fracture in aluminum alloy LY12. The mixed mode resultant crack opening displacement (COD) at fracture initiation tends to increase more rapidly with increase of the Mode II shear component. The fracture initiation value of COD for pure Mode II loading is six (6) times greater than that for Mode 1 loading. The same applies to the maximum effective plastic strain crack growth near the crack front. Observed are two typical morphologies, the equal-axes dimples and the parabolic dimples with evidence of slippage as dominated, respectively, by Mode I and Mode II loading.",

author = "Sha, \{J. B.\} and P. Zhu and Deng, \{Z. J.\} and Zhou, \{H. J.\}",

year = "1997",

doi = "10.1016/S0167-8442(96)00029-8",

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TY - JOUR

T1 - Strip model plasticity analysis of mixed mode crack opening displacement in aluminum alloy LY12

AU - Sha, J. B.

AU - Zhu, P.

AU - Deng, Z. J.

AU - Zhou, H. J.

PY - 1997

Y1 - 1997

N2 - Under mixed mode loading, the crack tip blunts and undergoes displacements in two directions, the normal and shear component corresponding to Mode I and Mode II loading, respectively. These local displacements are determined by the duplicated film method and used to analyze the behavior of mixed mode fracture in aluminum alloy LY12. The mixed mode resultant crack opening displacement (COD) at fracture initiation tends to increase more rapidly with increase of the Mode II shear component. The fracture initiation value of COD for pure Mode II loading is six (6) times greater than that for Mode 1 loading. The same applies to the maximum effective plastic strain crack growth near the crack front. Observed are two typical morphologies, the equal-axes dimples and the parabolic dimples with evidence of slippage as dominated, respectively, by Mode I and Mode II loading.

AB - Under mixed mode loading, the crack tip blunts and undergoes displacements in two directions, the normal and shear component corresponding to Mode I and Mode II loading, respectively. These local displacements are determined by the duplicated film method and used to analyze the behavior of mixed mode fracture in aluminum alloy LY12. The mixed mode resultant crack opening displacement (COD) at fracture initiation tends to increase more rapidly with increase of the Mode II shear component. The fracture initiation value of COD for pure Mode II loading is six (6) times greater than that for Mode 1 loading. The same applies to the maximum effective plastic strain crack growth near the crack front. Observed are two typical morphologies, the equal-axes dimples and the parabolic dimples with evidence of slippage as dominated, respectively, by Mode I and Mode II loading.

UR - https://www.scopus.com/pages/publications/0030732337

U2 - 10.1016/S0167-8442(96)00029-8

DO - 10.1016/S0167-8442(96)00029-8

M3 - 文章

AN - SCOPUS:0030732337

SN - 0167-8442

VL - 26

SP - 13

EP - 21

JO - Theoretical and Applied Fracture Mechanics

JF - Theoretical and Applied Fracture Mechanics

IS - 1

ER -

Strip model plasticity analysis of mixed mode crack opening displacement in aluminum alloy LY12

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