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20钢柱壳外爆拉-剪切型断裂研究 被引量:3

Tensile-shear failure of 20 steel cylindrical shells subjected to explosive loading
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摘要 研究20钢柱壳在较低爆炸载荷作用下的膨胀断裂特性,探讨拉伸断裂起始及拉-剪混合断裂机理。回收碎片宏观及微观分析结果显示:20钢柱壳在较低爆炸压力作用碎裂为拉剪-混合断裂,但与传统认为裂纹一般从柱壳外表面起始不同,断裂裂纹起始于柱壳壁厚内部,随膨胀变形发展向内、外表面扩展,形成拉-剪混合断裂。实验结果很好解释了许多金属柱壳爆炸实验中柱壳外表面出现裂纹的时间早于爆轰产物泄漏时间与动态有限元变形分析中外表面应力、应变始终处于较小状态之间的矛盾。 The experiments of expansion deformation and fracture characteristics of 20 steel cylindrical shells under low explosive load were carried out. The initiation of tensile-fracture and tensile-shear mixed fracture mode were discussed and the recovered fragments were analyzed by means of macroscopic and microscopic examination. The experimental results show that the failure of fragmentation for 20 steel cylindrical shells presents a mixed tensile-shear mode at a lower explosion pressure,but fracture cracks originate at the inner wall of the cylindrical shell,which is different from the general view that cracks initiate from outer surface of the cylindrical shells. Then the cracks extend to outer surfaces along radial direction and to the inner in shear direction with the expansion of the cylindrical shell. The experimental results well explain the contradictions that the time of cracks appear on outer surface of cylindrical shells is earlier than the time of detonation product leakage,and the outer surface stress or strain is always in a lower state in the dynamic finite element deformation analysis.
作者 郑柯 董新龙 ZHENG Ke;DONG Xinlong(Faculty of Mechanical Engineering & Mechanics, Ningbo University, Ningbo 315211, China)
出处 《兵器材料科学与工程》 CAS CSCD 北大核心 2018年第3期61-64,共4页 Ordnance Material Science and Engineering
基金 国家自然科学基金(11672143) NSAF联合基金(U1230122)
关键词 柱壳 爆炸碎裂 拉剪断裂 微观分析 机理 cylindrical shells explosive fragmentation tensile-shear fracture microscopic analysis mechanism
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  • 1牟仁德,贺世美.内爆炸圆管破片初速研究[J].航空材料学报,2006,26(3):140-143. 被引量:6
  • 2汤铁钢,李庆忠,孙学林,孙占峰,金山,谷岩.45钢柱壳膨胀断裂的应变率效应[J].爆炸与冲击,2006,26(2):129-133. 被引量:33
  • 3桂毓林,孙承纬,李强,张光升.实现金属环动态拉伸的电磁加载技术研究[J].爆炸与冲击,2006,26(6):481-485. 被引量:21
  • 4胡八一.金属圆筒在内部爆轰加载下的膨胀断裂机理[D].绵阳:中国工程物理研究院研究生部,1992. 被引量:2
  • 5Martineau R L,Anderson C A.Expansion of cylinder shells subjected to internal explosive detonatiens[J].Experimental Mechanics,2000,40(2):219-225. 被引量:1
  • 6Maajit S,Suneja H R.Dynamic tensile deformation and fracture of metal cylinders at high strain rates[J].International Journal of Impact Engineering,2002,27:939-954. 被引量:1
  • 7PEI Chi-chou, Segletes S B. Jet rotation resulting from anisotropy of shaped-charge liners[A]. International Symposium on Ballistics[C]. Brussels, Belgium:[s. n.], 1989: 36-45. 被引量:1
  • 8Schwarts A j, Busche M J, Becker R, et al. Role of texture in spin formed Cu shaped-charge liners[A]. Iris Rose Crewther, 19th International Symposium on Ballistics[C]. Switzerland: Vetter Druck A G, 2001 : 733-740. 被引量:1
  • 9Burkett M W, Claucy S P, Maudin P J, et al. Modeling anisotropic plasticity: 3D Eulerian hydrocode simulations of high strain rate deformation processes[A]. Furnish M D, Thadhani N N, Horie Y. Shock Compression of Condensed Matter[C]. USA. American Institute of Physics, 2001: 279-282. 被引量:1
  • 10Taylor G I. Sciemific Paper of G. I. Taylor(Ⅲ ,No. 44)[M]. London: Cambridge Universky Press, 1963. 被引量:1

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