| 准静态下Ⅰ型裂纹的断裂准则与切口圆柱形试件的破损评定研究 |
| |
| 引用本文： | 赵震洋,吴刚,陈泽光.准静态下Ⅰ型裂纹的断裂准则与切口圆柱形试件的破损评定研究[J].贵州工业大学学报(自然科学版),1996(5). |
| |
| 作者姓名： | 赵震洋 吴刚 陈泽光 |
| |
| 作者单位： | 贵州工学院化工系，同济大学地下系，重庆大学工程力学系 |
| |
| 摘 要： | 本文建立了准静态情况下Ｉ型裂纹的断裂准则，提出了新的表面能概念及其表达式。用材料的应力—应变曲线来表示裂纹尖端塑性区耗散能，并建立了裂尖塑性区耗散能与远场应力和临界裂纹长度的关系，通过试验确定了远场应力与临界裂纹长度的幂函数关系。
|
| 关 键 词： | 准静态 Ⅰ型裂纹 断裂准则 破损评定 |
A RESEARCH OF THE FRACTURE CRITERION OF CRACK TYPE I UNDER QUASI-STATE AND THE DAMAGE ASSESSMENT OF A CIRCULAR-CUT BAR |
| |
| Zhao Zhenyang, Wu Gang, Cheng Zeguang.A RESEARCH OF THE FRACTURE CRITERION OF CRACK TYPE I UNDER QUASI-STATE AND THE DAMAGE ASSESSMENT OF A CIRCULAR-CUT BAR[J].Journal of Guizhou University of Technology(Natural Science Edition),1996(5). |
| |
| Authors: | Zhao Zhenyang Wu Gang Cheng Zeguang |
| |
| Institution: | Zhao Zhenyang; Wu Gang; Cheng Zeguang (Guizhou institute of Technology) (Tongij University) (Chongqing University) |
| |
| Abstract: | This article establishes a fracture criterion of crack type I under quasi-state conditions and brings forward a new concept and an expression of surface energy. The relationship among the dissipatd energy of the plastic zone near the crack tip and the farther fieldstress and the length of critical crack is expressed by the dissipated energy of the plastic zonenear the crack tip. Through experiment, the power function of farther field stress and thecritical crack length is determined. |
| |
| Keywords: | quasi-state 1 crack type I fracture criterion dissipated energy of plastic zone damage assessment |
| 本文献已被 CNKI 等数据库收录！ |
