固体的冲击拉伸碎裂

发布时间：2018-05-26 03:33

  本文选题：冲击拉伸 + 碎裂　； 参考：《力学进展》2016年00期

【摘要】：固体材料在冲击拉伸载荷作用下常常会断裂成多个碎片(碎片化),固体材料碎片化的物理机制是多点损伤同时在固体中成核和发展,导致固体多处破坏.自Mott对固体的动态碎裂问题进行了开创性研究后,几十年来,对固体动态碎裂机制的研究一直是应用物理学、力学、航天和兵器工程等领域共同关心的重要课题.本文介绍了在冲击拉伸载荷作用下固体的动态碎裂研究的发展历史,给出相关的理论分析、实验研究和数值模拟的研究进展,特别针对现有的各种关于碎片尺度、碎片分布、以及碎片化物理机制的理论模型进行了较详尽的阐述和讨论,最后指出现有实验和理论研究中仍然存在的关键科学问题及进一步的研究展望.
[Abstract]:Solid materials often break into multiple fragments under impact tensile loading. The physical mechanism of fragmentation of solid materials is that multi-point damage nucleates and develops in solids at the same time resulting in multi-site destruction of solids. Since the pioneering research on the dynamic fragmentation of solids by Mott, the research on the mechanism of dynamic fragmentation of solids has been an important subject of common concern in the fields of applied physics, mechanics, spaceflight and weapon engineering in recent decades. In this paper, the development history of dynamic fragmentation of solids under impact tensile loading is introduced, and the related theoretical analysis, experimental research and numerical simulation are given. The theoretical model of fragmentation physical mechanism is expounded and discussed in detail. At last, the key scientific problems and the prospects for further research are pointed out.
【作者单位】： 宁波大学教育部冲击与安全工程重点实验室;中国科学技术大学中科院材料力学行为和设计重点实验室;香港科技大学机械与航空航天工程系;
【基金】：国家自然科学基金(10972108,11402130,11390361) 浙江省“力学”重中之重学科开放基金资助项目
【分类号】：O346.1
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本文编号：1935783