| 厚壁筒内裂纹深度与动态应力强度因子的关系 |
| |
| 引用本文： | 杨宏伟,马大为.厚壁筒内裂纹深度与动态应力强度因子的关系[J].南京理工大学学报(自然科学版),1996,20(6):529-532. |
| |
| 作者姓名： | 杨宏伟 马大为 |
| |
| 作者单位： | 南京理工大学机械学院 |
| |
| 摘 要： | 根据有限元法的基本理论，采用了求位移的方法，分别求解了具有５种裂纹深度的静止边裂纹的厚壁圆筒在同种内载荷作用下的静态应力强度因子，设计了合理的计算动态应力强度因子的方案，并分别计算了５种裂纹深度下厚壁筒在２种载荷作用下的动态应力强度因子，从而得到一些动态应力强度因子随裂纹深时间变化的规律。
|
| 关 键 词： | 裂纹 应力强度因子 有际元 厚壁壳体 厚壁筒 |
Relation between Crack Depths and Dynamic Stress Intensity Factors of Thick walled Cylinder |
| |
| Abstract: | According to the basic theory of finite element methods,using displacement method,first,the stationary stress intensity factors under the same internal pressure are computed for thick walled cylinders with five kinds crack depths(6 0mm,14 0mm,20 0mm,26 0mm and 32 0mm),then,the rational plan of computing dynamic stress intensity factors is designed.The dynamic stress intensity factors about the five kinds crack depths are computed under two kinds internal pressures (impact and sine).The rule of the stress intensity factors of thick walled cylinder with the change of crack depths and time are obtained.The rule is of some reference value to the design and engineering of the thick walled cylinder. |
| |
| Keywords: | cracks stress intensity factors finite element methods thick wall shells |
| 本文献已被 CNKI 维普 等数据库收录！ |
|
