基于精细网格的C型LNG船多体液货罐Y型接头强度校核  

Strength Check of Y-joint for Multi-body Liquid Cargo Tank of C-type LNG Ship Based on Fine Mesh

作　　者：程成[1] 韦喜忠[1] 陈鲁愚[1] 赵吉 洪英[3] CHENG Cheng;WEI Xizhong;CHEN Luyu;ZHAO Ji;HONG Ying(China Ship Scientific Research Center,Jiangsu Wuxi 214082,China;Wuxi Research Centre for Environment Science and Engineering,Jiangsu Wuxi 214000,China;Rules and Technology Center,CCS,Shanghai 200135,China)

机构地区：[1]中国船舶科学研究中心,江苏无锡214082 [2]无锡环境科学与工程研究中心,江苏无锡214000 [3]中国船级社规范与技术中心,上海200135

出　　处：《船舶工程》2020年第12期18-24,共7页Ship Engineering

基　　金：江苏省高校青蓝工程资助项目(2019);无锡环境科学与工程研究中心资助项目(2018)。

摘　　要：文章针对C型独立液货罐多体罐之间Y型接头屈服强度校核的问题,依据中国船级社《散装运输液化气体船舶构造与设备规范》,在MSC.patran的基础上结合二次开发语言PCL,开发精细网格自动细化工具,突破了Y型接头处2D和3D网格细化的难题,使用迭代排除的方法解决了对承压木真实模拟的问题,并设计1套载荷计算和自动施加、应力线性化及屈服校核软件。通过算例测试证明了开发系统自动计算结果的有效性和准确性,可以为工程设计人员大大节约工作量,大幅提高工作效率。Th paper aims at check the yield strength of the Y-joint between multi-body tanks of C-type independent cargo tanks.According to"Specifications for the Construction and Equipment of Ships Carrying Liquefied Gases in Bulk"of China Classification Society,a fine mesh automatic thinning tool is developed to break the problem of 2D and 3D mesh thinning at the Y-joint combined with the secondary development language PCL based on MSC.patran.The iterative elimination method is used to solve the problem of real simulation of bearing wood.A set of software for load calculation and automatic application,stress linearization and yield check is designed.The effectiveness and accuracy of the automatic calculation results of this system are proved by example tests,which can greatly save the workload and greatly improve the work efficiency for engineering designers.

关 键 词：C型LNG船 多体液货罐 Y型接头 精细网格 屈服强度 

分 类 号：U674.133.3[交通运输工程—船舶及航道工程]