摘要
聚氨酯材料(Polyurethane)制造的弯曲刚度加强件(Bend Stiffener, BSR)一般用于非粘结管道与端部的连接处,预报该区域的曲率分布是必要的。本文首先提出一种同时计及BSR材料应力-应变非线性与非粘结管道弯曲迟滞特性的曲率预报模型;然后使用非线性回归方法,辨识用于描述BSR材料的应力松弛行为的Prony参数,并将其代入曲率预报模型,使该模型可以考虑BSR材料应力松弛的影响效果;最终,本文提出针对BSR的优化准则,并对规则形状的BSR进行参数分析。
The Bend Stiffener(BSR)manufactured from polyurethane is generally used at the connection between nonbonded pipes and water surface platform.It is necessary to predict curvature distribution of BSR.This paper proposed a curvature prediction model that took into account the stress-strain nonlinearity of BSR and bending hysteresis of nonbonded pipes.Then,a nonlinear regression method was used to identify the Prony parameters which could be used to describe the stress relaxation behavior of BSR materials.Then the stress relaxation model was substituted into the curvature prediction model,so that the effect of BSR’s stress relaxation could be taken into considernation.Finally,an optimization criteria was proposed for BSR and conducts parameter analysis on regular shaped BSR.
作者
陈鲲鹏
张萌萌
赵冰
李亚美
付世晓
CHEN Kun-peng;ZHANG Meng-meng;ZHAO Bing;LI Ya-mei;FU Shi-xiao(School of Naval Architecture,Ocean&Civil Engineering,Shanghai Jiao Tong University,Shanghai 200240,China)
出处
《船舶力学》
北大核心
2025年第2期266-276,共11页
Journal of Ship Mechanics
基金
国家自然科学基金基础科学中心项目(52088102)。
关键词
非粘结管道BSR区域
曲率预报
非线性效应
应力松弛
优化准则
BSR area of non-bonded pipe
curvature prediction
nonlinear effect
stress relaxation
optimization criteria
作者简介
陈鲲鹏(1995-),男,博士研究生;通讯作者:张萌萌(1991-),女,博士,助理教授,E-mail:claire_zhang@sjtu.edu.cn。
