海洋工程装备与技术

海洋工程装备与技术 ›› 2024, Vol. 11 ›› Issue (1): 23-29.doi: 10.12087/oeet.2095-7297.2024.01.04

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悬挂链在磨损条件下的极限强度评估

贺文选1，叶茂盛1，张  雨1，张雅泰1，代晓辉1，张  崎2   

  1. 1. 海洋石油工程股份有限公司，天津  300461；
    2. 大连理工大学 船舶工程学院，辽宁  大连  116024
  • 出版日期:2024-05-28 发布日期:2024-05-29
  • 基金资助:
    国家重点研发计划项目“深海浮式结构物安全评估技术研究”（2018YFC0310502）

Evaluation of the Ultimate Strength of Suspension Chains under Wear Conditions

HE Wenxuan1， YE Maosheng1， ZHANG Yu1， ZHANG Yatai1， DAI Xiaohui1， ZHANG Qi2   

  1. 1. Offshore Oil Engineering Co.， Ltd.， Tianjin 300461， China；
    2. School of Naval Architecture， Dalian University of Technology， Dalian 116024， Liaoning China
  • Online:2024-05-28 Published:2024-05-29

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摘要： 运用ANSYS有限元分析软件，针对悬挂链在海洋环境下由于磨损造成的极限强度变化，进行了数值模拟研究。首先，建立有限元模型，确定承受拉伸载荷的悬挂链易发生破断的重点区域；然后，根据Archard磨损理论，在5级磨损（1/2/3/4/5mm）条件下累积磨损量，得到悬挂链在不同磨损等级下的磨损速度；最后，计算悬挂链在失效准则下的破断力，并根据磨损速度-磨损量-破断力的映射关系，得到悬挂链许用破断力与累计使用时间随磨损量的变化情况。结果表明：采用3级锚链钢的悬挂链环连续工作约2.7×104h磨损量近5mm，许用破断力下降4.2t。基于以上数值模拟方法，可实现典型工况下悬挂链的极限强度评估和在线寿命预测，为预防悬挂链失效提供了一定理论依据。

关键词: 数值模拟, 磨损, 极限强度, 寿命预测

Abstract: Using ANSYS finite element analysis software， a numerical simulation study was conducted to investigate the ultimate strength change of suspension chains due to wear under marine environment. Firstly， a finite element model is created to identify critical areas of a suspension chain under tensile load. Subsequently， applying the Archard wear theory， wear volumes are accumulated at 5 levels （1/2/3/4/5 mm） to determine the wear rate at different levels.Finally， the suspension chains breaking force is calculated using a failure criterion. The relationship between allowable breaking force and accumulated use time， accounting for wear， is established through the mapping of wear speed， wear amount， and breaking force. Based on the above numerical simulation method， the ultimate strength assessment and online life prediction of suspension chain under typical working conditions can be realized， which provides some theoretical basis for the prevention of suspension chain failure in advance.

Key words: numerical simulation, wear, ultimate strength, life prediction

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