摘要
由于限弯器设计涉及多参数且缺乏理论模型与设计依据,导致设计效率低下。本文首先基于欧拉-伯努利梁理论建立了限弯器等效刚度的总体模型,同时采用板弯曲理论与Hertz接触理论建立局部锁合结构的弯曲模型,通过简化得到了模型的半经验求解形式,并定性研究了公头端部高度、有效节长、母头尾部厚度、材料弹性模量四类参数对等效弯曲刚度的影响规律。然后建立有限元分析模型验证了上述半经验求解形式,并引入正交试验研究上述四类参数对等效弯曲刚度的影响程度,验证了理论分析得到的各参数影响趋势。研究获得的限弯器等效弯曲刚度理论模型,以及上述四类参数变化对限弯器等效弯曲刚度的影响规律及程度,可为设计提供参考。
Due to the multiple design parameters of a bend restrictor and the lack of theoretical models,the design efficiency is low.In this paper,a theoretical study was performed firstly,in which a global pure bending beam model of restrictors was established based on the Euler-Bernoulli beam theory.In addition,the plate bending theory and Hertz contact theory were used to establish the bending model of a local locking structure.The semi-empirical solution of the model was obtained through simplification,and the influences of four types of parameters on the bend restrictors’equivalent bending stiffness were qualitatively studied,including the height of male head,the effective joint length,the thickness of female tail,and the elastic modulus of material.Then,the finite element analysis method was carried out to verify the semi-empirical solution.Meanwhile,the orthogonal experiment method was introduced to study the influence of the above four types of parameters on the equivalent bending stiffness,and the influence of parameters obtained by the theoretical research was also verified.The theoretical model of the equivalent bending stiffness of the bend restrictor obtained in the research and the influence law of the above four types of changing parameters on the equivalent bending stiffness of the bend restrictor can provide a reference for designs.
作者
丁乐声
陈金龙
张聪
卢青针
岳前进
DING Le-sheng;CHEN Jin-long;ZHANG Cong;LU Qing-zhen;YUE Qian-jin(School of Ocean and Technology,Dalian University of Technology,Panjin 124200,China;Panjin Industrial Technology Institute,Dalian University of Technology,Panjin 124200,China)
出处
《船舶力学》
EI
CSCD
北大核心
2021年第11期1515-1522,共8页
Journal of Ship Mechanics
基金
国家自然科学基金联合基金资助项目(U1906233)。
关键词
限弯器
有限元分析
正交试验设计
参数分析
bend restrictor
finite element analysis
the orthogonal experimental design
parameter analysis
