IMECH-IR  > 力学所知识产出(1956-2008)
非均匀介质的随机断裂——细观涨落的尺寸效应
黄国君; 苏爱嘉; 柳春图
Source Publication疲劳与断裂2000——第十届全国疲劳与断裂学术会议论文集
2000
Pages413-418
Conference Name第十届全国疲劳与断裂学术会议
Conference Date2000-12-1
Conference Place中国广州
Abstract提出了连续介质力学的随机层次描述,并引入了等效随机体力的概念,以计及由于尺寸效应非均匀介质细观结构涨落的宏观力学表现。对经典Griffith裂纹平面应力问题的研究获得了应力强度因子简明的随机积分表达形式。研究表明:在高的应变梯度下,细观涨落的宏观力学效应会得到放大,经典的单一型裂纹变成混合型,应力强度因子分量的涨落可达20%~30%;非均匀介质的应力强度因子不仅仅取决于载荷和几何,而且是材料相关的。
Keyword非均匀介质 随机断裂 尺寸效应 涨落
Department力学所
Language中文
Document Type会议论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/48122
Collection力学所知识产出(1956-2008)
Recommended Citation
GB/T 7714
黄国君,苏爱嘉,柳春图. 非均匀介质的随机断裂——细观涨落的尺寸效应[C]疲劳与断裂2000——第十届全国疲劳与断裂学术会议论文集,2000:413-418.
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