考虑剪胀效应的混凝土动态柱形空腔膨胀理论
发布时间：2018-11-19 14:49
【摘要】：同时考虑混凝土的压缩和扩容特性,建立了动态柱形空腔膨胀理论,其中完整的靶体响应为密实区-扩容区-开裂区-弹性区,在扩容区采用扩容方程,使用该理论得到了空腔表面应力与膨胀速度的表达式,并使用该式计算得到弹体侵深和加速度.研究结果表明,运用该理论建立的刚性侵彻方程,其计算结果与实验结果具有良好的一致性,模型可以较好描述不同头部形状尖卵形弹体的侵彻能力以及加速度变化趋势.
[Abstract]:At the same time, considering the compression and expansion characteristics of concrete, the dynamic cylindrical cavity expansion theory is established, in which the complete target response is dense zone, expansion zone, crack zone and elastic zone, and the expansion equation is adopted in the expansion area. The expressions of cavity surface stress and expansion velocity are obtained by using the theory, and the penetration depth and acceleration of the projectile are calculated by the formula. The results show that the rigid penetration equation established by this theory is in good agreement with the experimental results, and the model can well describe the penetration ability and acceleration trend of different head shape oval projectile.
【作者单位】： 北京理工大学爆炸科学与技术国家重点实验室;
【基金】：国家自然科学基金资助项目(11390362,11572048) 国家部委基础科研项目(B1020132071)
【分类号】：TU37
本文编号：2342666
[Abstract]:At the same time, considering the compression and expansion characteristics of concrete, the dynamic cylindrical cavity expansion theory is established, in which the complete target response is dense zone, expansion zone, crack zone and elastic zone, and the expansion equation is adopted in the expansion area. The expressions of cavity surface stress and expansion velocity are obtained by using the theory, and the penetration depth and acceleration of the projectile are calculated by the formula. The results show that the rigid penetration equation established by this theory is in good agreement with the experimental results, and the model can well describe the penetration ability and acceleration trend of different head shape oval projectile.
【作者单位】： 北京理工大学爆炸科学与技术国家重点实验室;
【基金】：国家自然科学基金资助项目(11390362,11572048) 国家部委基础科研项目(B1020132071)
【分类号】：TU37
【相似文献】
相关期刊论文 前2条
1 赵明华;夏润炎;尹平保;杨超炜;徐卓君;;考虑软岩剪胀效应的嵌岩桩荷载传递机理分析[J];岩土工程学报;2014年06期
2 ;[J];;年期
相关会议论文 前1条
1 刘连峰;左建平;柴能斌;李岳春;李方枢;;灰岩在卸荷三轴实验下的强度和变形破坏[A];北京力学会第18届学术年会论文集[C];2012年
，本文编号：2342666
本文链接：https://www.wllwen.com/jingjilunwen/jianzhujingjilunwen/2342666.html
