CAVITATION MODELS FOR STRUCTURES EXCITED BY A PLANE SHOCK WAVE
CAVITATION MODELS FOR STRUCTURES EXCITED BY A PLANE SHOCK WAVE
复制标题
DOI：
10.1006/jfls.1997.0120
复制
发表时间：
1998
影响因子：
3.6
通讯作者：
K. Mäkinen
中科院分区：
文献类型：
--
作者：
K. Mäkinen
水下结构对水下爆炸的响应通常涉及流体和/或结构的非线性行为。此类系统的建模将非常困难；然而，可以进行简化，其中需要特别考虑流体对结构的影响的表示。平面波近似 (PWA) 用于表示分析的早期冲击加载阶段的流体，并且比较了四种不同的模型，以在结构处的压力低于空化压力时对空化进行建模。在这个非常复杂的问题中，提供了一种简单的方法来研究与空化有关的不同参数的影响。封闭式解决方案为 PWA 方法的验证提供了比较的基础，提出了示例问题，包括板的冲击响应，并对不同空化模型的结果进行了比较。
The response of submerged structures to an underwater explosion generally involves the nonlinear behaviour of the fluid and/or the structure. The modelling of such systems would be very difficult; however, simplifications can be made in which the representation of the effect of the fluid on the structure requires special consideration. The Plane Wave Approximation (PWA) is used to represent the fluid during the early shock-loading phase of the analysis and four different models are compared for modelling the cavitation when the pressure at the structure falls below the cavitation pressure. A simple method is provided to study the effects of different parameters, concerning the cavitation, in this very complex problem. Closed-form solutions provide the basis of comparison for the validation of the PWA approach, example problems are presented, including the shock response of plates, and the results from the different cavitation models are compared.