基于目标弯矩的舱段结构总纵强度直接计算方法
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摘要
在仅知船体各站垂向弯矩的情况下,以某船舱段模型总纵强度直接计算分析为例,应用3种方法计算舱段内各强框架处模拟浮力与总重之差的等效节点力,并加载计算,结果分析表明,施加等效节点力来模拟浮力与总重之差进行舱段总纵强度评估的方式是可行、合理的。
When only the vertical bending moment on every station was given,taking the longitudinal strength direct analysis of a ship cabin model as an example,3 methods were applied to calculate the equivalent nodal force on each strong framework to simulate the difference between buoyancy and total weight. These equivalent loads were applied on the model respectively to carry out longitudinal strength direct calculation. The results were compared with each other,showing that the method of equivalent nodal force is feasible and reasonable to assess the longitudinal strength of ship cabin.
When only the vertical bending moment on every station was given,taking the longitudinal strength direct analysis of a ship cabin model as an example,3 methods were applied to calculate the equivalent nodal force on each strong framework to simulate the difference between buoyancy and total weight. These equivalent loads were applied on the model respectively to carry out longitudinal strength direct calculation. The results were compared with each other,showing that the method of equivalent nodal force is feasible and reasonable to assess the longitudinal strength of ship cabin.
引文
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[2]朱加刚,肖渤舰,肖曙明,等.舱段有限元分析等效计算总纵强度研究[J].船海工程,2008,37(6):27-29.
[3]杜庆喜.船体结构强度直接计算方法研究[D].武汉:武汉理工大学,2007.
[4]朱胜昌,陈庆强,江南.大型集装箱船总纵强度计算方法研究[J].船舶力学,2001(2):34-42.
[5]谢心,吴嘉蒙,王德禹.基于剪流分布规律的节点力加载方式在船体结构有限元分析中的应用[J].舰船科学技术,2017,39(5):12-17.
[6]International Association of Classification Society.Harmonised Common Structural Rules[S].IACS,2014.
[7]熊宝权,张少雄.HCSR直接计算边界条件合理性分析[J].船海工程,2017,46(1):14-17.
[8]王杰德,杨永谦.船体强度与结构设计[M].北京:国防工业出版社,1994.