| Автор | Pan, K.L. |
| Автор | Huang, Z.P. |
| Дата выпуска | 1994 |
| dc.description | Based on the general macroscopic potential theory, a method to find macroscopic plastic potential and the corresponding constitutive relation is developed for visco-plastic materials containing cylindrical voids. The constitutive relation of the matrix has a generalized overstress form. A comparison of the exact macroscopic potential with its upper bound is made. The numerical results show little difference between the upper bound potential and the exact one. The macroscopic constitutive relation is investigated under triaxial loading conditions. When the strain rate sensitive parameter tends to zero, Gurson's model (1977) is retrieved. When the loading condition is axisymmetric, the pres ent result reverts to Licht and Suquet's result (1988). When the matrix becomes infinite, the result of Budiansky et al. (1982) is obtained. Finally, the macroscopic constitutive rela tion and the corresponding dynamic loading surface are investigated for the case of axi symmetric load. An approximate analytical expression of the dynamic loading surface is suggested through analysis and numerical fitting. |
| Издатель | Sage Publications |
| Тема | plastic potential |
| Тема | visco-plastic material |
| Тема | cylindrical void growth |
| Тема | dynamic loading surface. |
| Название | A Cylindrical Void Growth Model in Visco-Plastic Materials |
| Тип | Journal Article |
| DOI | 10.1177/105678959400300105 |
| Print ISSN | 1056-7895 |
| Журнал | International Journal of Damage Mechanics |
| Том | 3 |
| Первая страница | 87 |
| Последняя страница | 106 |
| Аффилиация | Pan, K.L., Department of Mechanics Peking University Beijing, 100871 Peoples Republic of China |
| Аффилиация | Huang, Z.P., Department of Engineering Mechanics Tongji University Shanghai 200092 Peoples Republic of China |
| Выпуск | 1 |
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