关于自由面速度剖面解读层裂问题的几点商榷

贺红亮

贺红亮. 关于自由面速度剖面解读层裂问题的几点商榷[J]. 高压物理学报, 2009, 23(1): 1-8 . doi: 10.11858/gywlxb.2009.01.001
引用本文: 贺红亮. 关于自由面速度剖面解读层裂问题的几点商榷[J]. 高压物理学报, 2009, 23(1): 1-8 . doi: 10.11858/gywlxb.2009.01.001
HE Hong-Liang. Discussion on the Spallation Behavior Resolved by Free-Surface Velocity Profile[J]. Chinese Journal of High Pressure Physics, 2009, 23(1): 1-8 . doi: 10.11858/gywlxb.2009.01.001
Citation: HE Hong-Liang. Discussion on the Spallation Behavior Resolved by Free-Surface Velocity Profile[J]. Chinese Journal of High Pressure Physics, 2009, 23(1): 1-8 . doi: 10.11858/gywlxb.2009.01.001

关于自由面速度剖面解读层裂问题的几点商榷

doi: 10.11858/gywlxb.2009.01.001
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    贺红亮

Discussion on the Spallation Behavior Resolved by Free-Surface Velocity Profile

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    Corresponding author: HE Hong-Liang
  • 摘要: 基于对层裂问题的理解和相关文献,就自由面速度剖面解读层裂问题的局限性提出了一些看法。指出:自由面速度剖面测量给出的层裂破坏过程是间接信息,而不是直接信息,用它确定的理论模型和数值模拟参数,也许并没有真实地反映层裂过程的物理本质;层裂强度常被人们用来表征材料在高应变率下的抗拉伸能力,但是在目前的层裂强度计算公式中没有考虑损伤介质对波剖面传播的影响,使得计算结果明显偏低;传统的单点测量得到的结果有很大的局限性,对于层裂问题,采用概率评估或者置信度评估,也许更符合真实情况。建议:为了全面真实地评价层裂问题中的物理、力学过程,应该加快发展更多的实验探测和诊断技术,尤其是对内部损伤状态的观测。

     

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出版历程
  • 收稿日期:  2008-07-27
  • 修回日期:  2009-01-05
  • 发布日期:  2009-02-15

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