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K_Ⅰ,K_Ⅱ复合型裂纹的脆性断裂
高桦; 王自强; 杨成寿; 周爱华
Source Publication金属学报
1979
Volume15Issue:3Pages:211-220
ISSN0412-1961
Abstract本文用三点弯曲和四点弯曲试样,在K_Ⅱ/K_Ⅰ=0—14的范围内,对GC-4超高强度钢、30Cr2MoV中强度转子钢和稀土球墨铸铁进行了线弹性平面应变复合型脆断试验。结果表明:复合型裂纹的脆断开裂方向与现有的三种复合型理论符合较好;但是,复合型裂纹扩展阻力随K_Ⅱ/K_Ⅰ比值增加而增大,与现有复合型理论差别较大。本文从塑性区的形状、大小和裂纹顶端在开裂方向的应力状态等方面对此问题进行了分析并指出,现有理论关于复合型裂纹扩展阻力与变形特征无关的假设,对于具有一定塑性变形能力的金属材料,是不合适的。文章还对简单且偏于安全的处理复合型问题的工程分析方法作了讨论。
Keyword脆性断裂 金属材料 裂纹扩展阻力 平面应变断裂韧度 试验机 复合型裂纹 应变片 声发射计数 开裂方向
Language中文
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/38602
Collection力学所知识产出(1956-2008)
Corresponding Author高桦
Recommended Citation
GB/T 7714
高桦,王自强,杨成寿,等. K_Ⅰ,K_Ⅱ复合型裂纹的脆性断裂[J]. 金属学报,1979,15,3,:211-220.
APA 高桦,王自强,杨成寿,&周爱华.(1979).K_Ⅰ,K_Ⅱ复合型裂纹的脆性断裂.金属学报,15(3),211-220.
MLA 高桦,et al."K_Ⅰ,K_Ⅱ复合型裂纹的脆性断裂".金属学报 15.3(1979):211-220.
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