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爆炸/冲击动力学学习研究中的若干疑惑

王礼立

洪滔, 王继海. 二维爆轰波DSD方法的非定态解析解[J]. 爆炸与冲击, 1996, 16(4): 317-325. doi: 10.11883/1001-1455(1996)04-0317-9
引用本文: 王礼立. 爆炸/冲击动力学学习研究中的若干疑惑[J]. 爆炸与冲击, 2021, 41(1): 011401. doi: 10.11883/bzycj-2020-0415
WANG Lili. Some doubts in studying explosion/impact dynamics[J]. Explosion And Shock Waves, 2021, 41(1): 011401. doi: 10.11883/bzycj-2020-0415
Citation: WANG Lili. Some doubts in studying explosion/impact dynamics[J]. Explosion And Shock Waves, 2021, 41(1): 011401. doi: 10.11883/bzycj-2020-0415

爆炸/冲击动力学学习研究中的若干疑惑

doi: 10.11883/bzycj-2020-0415
详细信息
    作者简介:

    王礼立(1934- ),男,教授,博士生导师,wanglili@nbu.edu.cn

  • 中图分类号: O347

Some doubts in studying explosion/impact dynamics

  • 摘要: 在爆炸/冲击动力学的学习研究过程中,“疑惑”是创新的前奏。本文中,与大家分享了我所经历的若干实例,包括:静力学平衡条件可以用于波传播分析吗?满足屈服条件(σeff=Y)就一定进入塑性了吗?ZWT方程的黏弹性松弛时间θ1θ2为什么互相无关?有质量就有惯性吗?材料动态本构响应要考虑惯性效应吗?层裂是材料动态响应问题还是结构动态响应?塑性铰分析与波传播分析有相通的内在联系吗?
  • 图  1  强间断横波在弦中的传播

    Figure  1.  A strong discontinuous transverse wave propagating in a string

    图  2  无限长直弦的突加恒速斜向点冲击

    Figure  2.  An infinite straight string subjected to abrupt constant-velocity oblique point-impact

    图  3  杆中一维弹塑性加载波的传播

    Figure  3.  One-dimensional elastic-plastic wave propagating in a bar

    图  4  松弛时间的有效影响阈

    Figure  4.  The effect influence domain of a relaxation time

    图  5  层裂的平板撞击实验示意图

    Figure  5.  Schematic of the plate impact experiment for spalling

    图  6  简支梁在冲击加载下的横向速度剖面、剪力分布、横向位移剖面、剪切应变分布和、弯矩分布

    Figure  6.  Simply supported beam subjected to impulsive loading: transverse velocity profile, shear force distribution, transverse displacement profile, shear strain distribution, bending moment distribution

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  • 收稿日期:  2020-11-11
  • 网络出版日期:  2020-12-25
  • 刊出日期:  2021-01-05

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