1. In this paper, the maximum circumferential strain fracture criterion is proposed with a comparison of the maximum circumferential stress criterion and the strain energy density theory. 根据线弹性断裂力学,推导出了复合型裂纹的最大拉应变断裂准则,并与最大拉应力理论、应变能密度因子理论作了比较、分析;
2. In this paper, the maximum circumferential strain fracture criterion is proposed with a comparison of the maximum circumferential stress criterion and the strain energy density theory. 根据线弹性断裂力学,推导出了复合型裂纹的最大拉应变断裂准则,并与最大拉应力理论、应变能密度因子理论作了比较、分析;
3. In this paper, the maximum circumferential strain fracture criterion is proposed with a comparison of the maximum circumferential stress criterion and the strain energy density theory. 根据线弹性断裂力学,推导出了复合型裂纹的最大拉应变断裂准则,并与最大拉应力理论、应变能密度因子理论作了比较、分析;
4. In this paper, the maximum circumferential strain fracture criterion is proposed with a comparison of the maximum circumferential stress criterion and the strain energy density theory. 根据线弹性断裂力学,推导出了复合型裂纹的最大拉应变断裂准则,并与最大拉应力理论、应变能密度因子理论作了比较、分析;
5. Foundry polyurethane binder comprises component Ⅰ, a polyhydroxy component whose main component is benzylic ether phenolic resin, component Ⅱ, a polyisocyanate, and a catalyst. 铸造用的聚氨酯粘合剂主要有两组份构成,组份Ⅰ为多羟基化合物,如苯醚型酚醛树脂为主要成份;