| 韧性材料梁在爆炸载荷作用下的全塑性动态断裂 |
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| 引用本文： | 朱锡.韧性材料梁在爆炸载荷作用下的全塑性动态断裂[J].海军工程大学学报,1994(3). |
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| 作者姓名： | 朱锡 |
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| 摘 要： | 本文运用刚塑性分析方法，研究了带裂纹韧性材料梁在爆炸载荷作用下的塑性动态断裂过程，建立了简支梁的运动和断裂过程的控制方程。本文考虑了应变率对梁的运动和断裂过程的影响，以及由于断裂引起的附加轴向力对梁的断裂过程的影响，给出了梁的裂纹启裂和上裂的时刻及其条件，以及裂纹扩展长度、裂改扩展速度、断裂截面上弯曲力矩和附加轴向力随时间的变化规律。
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| 关 键 词： | 梁 塑性动态断裂 爆炸载荷 |
The Dynamic Plastic Fracture of Ductile Material Beam under the Explosion Loading |
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| Zhu Xi.The Dynamic Plastic Fracture of Ductile Material Beam under the Explosion Loading[J].Journal of Naval University of Engineering,1994(3). |
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| Authors: | Zhu Xi |
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| Abstract: | The dynamic plastic fracture response of ductile material beam with a initial crack subjected to explosion loading is investigated by using the method of rigid--plastic analysis, andthe control equations of moving and fracture of the beam are determined. In our work, the effect of strain rate and a dynamically induced axial force which is generated during the fracture process are considered. The crack initiation and arrest time and its conditions are givenand formulations about the crack propagation length, crack tip velocity, bending momentand axial force at the fracturing section are determined as functions of time after crack initiation. |
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| Keywords: | Beam Dynamic plastic fracture Explosion loading |
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