The interfacial crack between two dissimilar elastic-plastic materials |
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Authors: | Xia Lin Wang Tzuchiang |
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Institution: | (1) LNM, Institute of Mechanics, Chinese Academy of Sciences, 100080 Beijing, China |
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Abstract: | This paper presents an exact asymptotic analysis on the interfacial crack between two dissimilar elastic-plastic materials.
These two materials have identical hardening exponent (n
1=n
2) but different hardening coefficient (α1 ≠ α2). Two groups of the near-crack-tip fields have been obtained, which not only satisfy the continuity of both tractions (σθ, τrθ) and displacements (u
r
,u
θ) on the interface, but also meet the traction free conditions on the crack faces. The first group of fields have the mode
mixityM
P
quite close toM
P
=1 (MODE I) within the whole range 0 ≤ α1/α2 < ∞. As for the second group of fields, which is only obtained within the narrow range 0.9 ≤ α1/α2 ≤ 1, it is found that the mode mixity changes sharply with the ratio value α1/α2.
The project supported by National Natural Science Foundation of China |
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Keywords: | asymptotic analysis interfacial crack mode mixity |
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