极限载荷下筒状重力锚结构强度数值模拟分析  

Numerical simulation analysis of the strength of a cylindrical gravity anchor structure under ultimate load

作　　者：张腊明 刘敏[2] ZHANG La-ming;LIU Min(Kunming Shipbome Equipment Research and Test Center,Kunming 650051,China;Wuhan Second Ship Design and Research Institute,Wuhan 430064,China)

机构地区：[1]昆明船舶试验设备研究中心,云南昆明650051 [2]武汉第二船舶设计研究所,湖北武汉430064

出　　处：《舰船科学技术》2022年第23期28-32,共5页Ship Science and Technology

摘　　要：本文根据实际工程要求设计一种满足特定指标的重力锚。依据重力锚二维设计图建立三维有限元模型,通过遴选重力锚工作过程中2种最具代表性的工况,使用有限元分析软件Abaqus对其进行结构强度分析。分析结果表明:针对吊装工况,重力锚吊耳与销钉接触部位应力最大;而在回收工况下,支撑筋板与应急解脱装置的接触部位应力最大。根据2种工况下的分析结果以及工程经验对重力锚各部件进行优化改进,最终得到既能满足特定工程需要又兼顾成本的重力锚设计方案。In this paper, according to the actual engineering requirements, a gravity anchor that meets specific indexes is designed. According to the two-dimensional design drawing of the gravity anchor, a three-dimensional finite element model is established. By selecting the two most representative working conditions in the working process of the gravity anchor,the finite element analysis software Abaqus is used to analyze its structural strength. The analysis results show that: under the hoisting condition, the stress at the contact part between the lifting lug of the gravity anchor and the pin is the largest;while in the in-situ recovery condition, the stress at the contact part between the support rib and the emergency release device is the largest. According to the analysis results under the two working conditions and engineering experience, the components of the gravity anchor are optimized and improved. Finally, a gravity anchor design scheme that can meet the specific engineering needs and take into account the cost is obtained, which provides analysis and reference for engineering applications.

关 键 词：重力锚 极限载荷 强度分析 有限元法 

分 类 号：U664.7[交通运输工程—船舶及航道工程]