船舶结构碰撞相似律的数值研究

针对船舶耐撞特性研究问题的特点,提出进行结构碰撞相似律研究的必要性和重要性。利用相似理论分析了碰撞过程的相似参数,建立了船舶结构耐撞性研究中的相似律关系。在此基础上以平板结构撞击特性研究为计算模型,应用显式有限元程序MSC/Dytran对满足比例关系的撞击过程进行数值仿真计算。计算结果表明,原型与比例模型的撞击响应特性符合相似律。考虑到船用材料的率相关性,针对相似加筋圆柱壳结构进行撞击比较分析,认为由于高强度低合金结构钢的率效应不敏感,且撞击载荷速度较低,相似律仍然成立。

Numerical Simulation Research of Ship Collision Analogue Rule

The necessity and significance of the analogue rule for ship structure collisions have been discussed based on the characteristic of this topic. Using the analogue theory,the analogue parameters of ship collision are analyzed and put forward,and the relationship of analogue for ship collision have been built. In order to verify this relationship,a calculation example for two panels has been carried out by FEM code-MSC / Dytran. And the results show that,there is an agreement between the prototype and the sc...