摘要
针对LNG动力船舶燃气供应系统(FGSS)冷箱的管路冷应力优化的不确定性问题,文章提出2个极端管夹约束条件的概念,并用于确定超低温管路的变形、应力2个参数极限值,构建明确的限值范围。同时,应用SolidWorks、ANSYS分别对FGSS冷箱管路进行了三维建模和有限元计算,考虑了管路和液体重力、温度载荷、压力载荷和不同的管夹约束等边界条件,进行了冷箱管路整体变形和应力分析。仿真结果表明:全部滑动管夹约束会导致部分冷箱管路形变过大,而全部固定管夹约束会导致部分冷箱管路冷应力过大。
Due to the uncertainty of pipeline cold stress optimization for the FGSS cold box of LNG-powered ships,this paper proposes the concept of two extreme pipe clamps constraint,which is used to determine the limit of two parameters,deformation and stress of ultra-low-temperature pipelines,and thus to obtain a clear range of lim-its.In addition,the paper applied SolidWorks and ANSYS to 3D modeling and finite element calculation of the FGSS cold box pipeline respectively and carried out overall deformation and stress analysis of the cold box pipeline by con-sidering the pipeline and liquid gravity,temperature load,pressure load and different pipe clamp constraints and other boundary conditions.The simulation results show that all the sliding pipe clamp constraints lead to excessive deformation in the partial cold box pipeline,while all the fixed pipe clamp constraints lead to excessive cold stress in the partial cold box pipeline.
作者
温小飞
童林海
李同兰
汪家政
WEN Xiaofei;TONG Linhai;LI Tonglan;WANG Jiazheng
出处
《中国修船》
2024年第2期40-44,49,共6页
China Shiprepair
基金
浙江省科技计划项目省级重点研发项目(2021C03184)。
