期刊论文

Zhang, Min(zhang.min1989.ok@163.com)

中文

船舶力学

1007-7294

2022

26

8

1171-1179

10.3969/j.issn.1007-7294.2022.08.007

船舶和海洋水动力湖北省重点实验室开放课题（20200001）； 国家自然科学基金面上项目（51579110）；

本校为第一且通讯机构

为了研究船体壳板撞击破裂后的撕裂特征,开展了变截面撞头准静态压载船体壳板的模型试验和数值模拟。试验记录了壳板变形、破裂和撕裂过程的损伤模式及其完整损伤过程的撞击力-撞深曲线。通过拉伸试验校核,提出了模拟壳板初始破裂和撕裂失效的数值模拟方法。试验和数值模拟结果的对比分析表明:所提数值模拟方法能准确模拟壳板的完整损伤过程;壳板撕裂失效是由裂纹尖端的拉伸作用引起的,且撕裂过程的撞击力与裂纹数目无关;壳板撕裂过程的弯曲和拉伸作用所吸收的能量较大。本文研究工作对船体结构的耐撞性准确评估具有一定指导作用。

In order to investigate the tearing characteristics of ship plates after fracture subjected to impact loads, model tests and numerical simulations were performed where scaled ship plates were statically punched by an indenter with a variable cross-section. Experimental results for the large deformation, initial fracture and tearing processes and resistance-penetration curves of the specimens were recorded. In addition, a numerical simulation method for simulating the initial fracture and tearing failure of plates was proposed according to the c...