| 1. | Fracture criterion of - mixed mode crack for orthotropic plate 正交异性板复合型裂纹相对周向应力断裂准则 |
| 2. | Maximum circumferential stress criterion of brittle fracture for v - notch 型切口脆性断裂的最大周向应力准则 |
| 3. | Maximum circumferential stress criterion of brittle fracture at the interface edge of bonded materials 结合材料界面端脆性断裂的最大周向应力准则 |
| 4. | It is indicated that the maximum circumferential stress criterion coincides with the experimental results 实验表明,本文提出的最大周向应力脆性断裂准则与实验结果基本吻合。 |
| 5. | The theoretical critical pressure of the local stability will be improved further , respectively considering the non - uniformity of circumferential stress distribution over the ring - stiffened cylindrical shell and the torsion of the frame 分别考虑周向应力不均匀分布和肋骨扭转对壳板稳定性理论临界压力的影响。 |
| 6. | Based on the strength design theory and the practical stress features of the drums and on the phenomenon that the drums produce the circumference stress along the drums under the binding force of the wire ropes and the bending stress along the axis , the paper proposes the fourth strength theory as the basis for the drum strength design 利用强度设计理论,结合卷筒实际受力特点,针对卷筒体在钢丝绳紧箍外压作用下产生沿卷筒径向、周向应力和轴向局部弯曲应力的情况,提出了以第四强度理论为依据的卷筒强度设计准则。 |
| 7. | Based on the theory of fracture mechanics , the relation between the critical stress intensity factors for v - notch kc and the plane strain crack toughness k10c and the brittle fracture criterion of the maximum circumferential stress for single and double stress singularity with the v - notch problems are proposed . experiments were carried out using two kinds of v - notched specimens made out of plexiglas to verify this brittle fracture criterion 本文基于断裂力学原理,推导出了型切口的临界应力强度因子k _ c与材料的平面应变断裂韧度k _ ( 10c )之间的关系,给出了平面单奇异性和双奇异性型切口问题的最大周向应力脆性断裂准则,并用有机玻璃板材加工了两种型切口试样,进行了实验验证。 |