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| AN INVESTIGATION OF THE CRACK-TIP STRESS AND STRAIN |
| Deng Zhi-sheng Chen Chi (Chen Chih)(Beijing Institute of Iron and Steel Research) |
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Cite this article:
Deng Zhi-sheng Chen Chi (Chen Chih)(Beijing Institute of Iron and Steel Research). AN INVESTIGATION OF THE CRACK-TIP STRESS AND STRAIN. Acta Metall Sin, 1978, 14(3): 239-326.
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Abstract With the aid of etching by Fry's reagent and microhardness measurements, the crack-tip stress and strain have been investigated. The results obtained may be summarized as follows:The crack-tip stress increases simultaneously with the angle of bend of the specimen in accord with the relationJ=G+[(β/3~(1/2)+1/2(σ_(YY))_A)]δ_p derived by us under the linear hardening law:■=β+γ■until the critical point is reached:J_c=G_c+(β/3~(1/2)+1/2σ_F)δ_(p,c) demonstrating that at the critical point(σ_(YY))_A=σ_F
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Received: 18 March 1978
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[1] 陈篪,金属学报,13(1977) .57;Scientia Sinica,ⅩⅪ(1978) ,112．
[2] 陈篪,待发表工作.
[3] 希尔,R,塑性数学理论,王仁等译,科学出版社,1966年,282页.
[4] 陈篪,待发表工作.
[5] 陈篪等,金属学报,11(1975) ,174．Y |
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