高速弹体非正侵彻结构响应模式与失效破坏机理研究

项目名称： 高速弹体非正侵彻结构响应模式与失效破坏机理研究

项目编号： No.11202029

项目类型： 青年科学基金项目

立项/批准年度： 2013

项目学科： 数理科学和化学

项目作者： 皮爱国

作者单位： 北京理工大学

项目金额： 28万元

中文摘要： 高速非正侵彻条件下容易导致侵彻体失效破坏，如弹体弯曲、屈曲、弹体破裂等结构响应现象。侵彻体的结构响应涉及到高速侵彻武器战斗部的结构强度与装填比优化设计等重要方面，已成为该领域的重要科学与工程问题。但目前尚缺乏侵彻弹体响应特征量的实时试验数据、高速侵彻弹体失效破坏模式的机理分析。 本项目针对高速侵彻弹体工程设计中急需解决的关键科学问题，以获取高速非正侵彻环境下侵彻体结构响应模式与失效破坏机理为突破点，采用试验测试、理论分析和数值计算相结合的方法，重点获得高速侵彻体结构响应的实时特征，建立非正侵彻条件下由横向与轴向载荷交互作用引起的高速侵彻体的结构响应分析模型，建立相应的高速侵彻体结构失效破坏判据，得到高速侵彻弹体壳体结构与装药的耦合响应规律，为高速侵彻弹体的结构优化设计、结构强度分析提供理论依据，同时为预测含能材料在冲击载荷作用下的力学行为及化学响应提供力学边界条件。

中文关键词： 动态响应；侵彻；自由梁；数值模拟；

英文摘要： The earth penetration weapon may face the problem of structural stability with increasing the impact velocity and nonideal conditions, i.e., the dynamic bending, buckling or breaking of projectile structure. The structure response of penetrator is related to the optimization design of weapons structure strength and high ratio of explosive to warhead and other important aspects, it has become the important science and engineering problem in the penetration research field. But there is little real-time test data of projectile response characteristic features, nor mechanism analysis of projectile failure mode on hypervelocity penetration. Our research aim the key scientific problems in engineering design of high-speed penetrator, in order to get the projectile structural response modes and the mechanism of projectile failure mode on hypervelocity penetration, a combined work of experimental test, theoretical analysis and numerical calculation will performed to get the real-time response characteristics of penetrator, to establish a analysis model for projectile structure response caused by the interaction of transverse and axial loads, to set up a structure failure destruction criterion of projectile on hypervelocity penetration, to get the coupling mechanical response law of projectile cartridge and charge, to pro

英文关键词： plastic dynamic response；penetration；free-free beam；numerical simulation；