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| 刚粘塑性强化球形薄壳在撞击体作用下的大变形动力分析 | |
| 引用本文： | 宁建国 杨桂通. 刚粘塑性强化球形薄壳在撞击体作用下的大变形动力分析[J]. 固体力学学报, 1994, 15(2): 111-120 |
| 作者姓名： | 宁建国 杨桂通 |
| 作者单位： | 北京大学，太原工业大学 |
| 摘 要： | 本文研究了在平头圆柱体的冲击下，薄球形壳的动力大变形。通过等度量变换，给出了球壳的变形模态。在Ｐｅｒｚｙｎａ和Ｓｙｍｏｎｄｓ的粘塑性本构模型基础上，设材料从Ｍｉｓｅｓ屈服条件，并假定弯矩的膜力不耦合。根据刚粘塑性强化材料的变分原理。给出球壳的运动方程结果与实验进行了比较，二者吻合较好。 |
| 关 键 词： | 冲击 变形 圆球壳 薄壳 结构力学 |
DYNAMIC ANALYSIS OF LARGE DEFORMATION FOR RIGID-VISCOPLASTIC HARDENING SPHERICAL SHELLS BEING IMPACTED BY A MISSILE |
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| Ning Jianguo,Yang Guitong. DYNAMIC ANALYSIS OF LARGE DEFORMATION FOR RIGID-VISCOPLASTIC HARDENING SPHERICAL SHELLS BEING IMPACTED BY A MISSILE[J]. Acta Mechnica Solida Sinica, 1994, 15(2): 111-120 | |
| Authors: | Ning Jianguo Yang Guitong |
| Abstract: | This paper studies the dynamic behavior of large deformation of spherical shells impacted by a flatnosed missile. By using isometric transformations, the deformation modes are given. On the basis of Perzyna-Symonds viscoplastic constitutive equations, the motion equations of the shells are resulted by rigid-viscoplastic variational principlet(8). A comparison made between the numerical results and experimental ones indicates that the two groups of results are in conformity with each other. |
| Keywords: | spherical shell impact isometric transformation rigid-viscoplasticity |
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