HDPE楔形体入水砰击数值模拟及影响因素
Numerical simulation and influencing factors of HDPE wedges entering water
沈烈 1赵薇 1隋江华 1惠卓凡1
作者信息
- 1. 大连海洋大学航海与船舶工程学院,辽宁大连 116023
- 折叠
摘要
针对高密度聚乙烯(HDPE)材料楔形体垂直入水砰击响应的问题,建立楔形体三维数值模型,采用ALE(任意拉格朗日欧拉)流固耦合数值计算方法开展数值模拟研究,分析不同入水速度、斜升角、板厚对楔形体入水冲击响应特性的影响.研究结果表明,随着入水速度的增加,楔形体加速度峰值增大且相同时间内入水方向位移也增大;楔形体两翼形变与楔形体板厚成反比,增大板厚可以有效减小楔形体的形变;随着斜升角的增大,楔形体所受砰击压力和加速度峰值均明显减小,但对两翼变形的影响不明显.研究成果可为HDPE船舶的工程设计及应用提供一定参考.
Abstract
A three-dimensional numerical wedge model was established to solve the vertical slamming response of high-density polyethylene(HDPE)wedge into water.ALE(Arbitrary Lagrange-Euler)fluid-structure coupling numerical calculation method was used to simulate the wedges.The influence of different water entry velocities,deadrise angle,and plate thickness on the impact response characteristics of the wedge are analyzed.The results show that with the increase of water entry velocity,the peak acceleration of the wedge increases,and the displacement in the water entry direction in-creases simultaneously.The deformation of the two wings of the wedge is inversely proportional to the wedge's thickness,and the wedge's deformation can be effectively reduced by increasing the thickness of the wedge.With the increase of the deadrise angle rise,the slamming pressure and the acceleration peak of the wedge decrease obviously,but the influence on the deformation of the two wings is not apparent.The research results can provide some reference for the engineering design and application of HDPE ships.
关键词
HDPE楔形体/入水砰击/入水速度/板厚/斜升角Key words
HDPE wedge/slamming/entry velocity/deadrise angle/plate thickness引用本文复制引用
出版年
2024
NETL
NSTL
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