摘要
水下连接器是整个生产系统的关键节点,其密封一旦失效后果不堪设想,因此有必要对连接器进行可靠性评价,为水下生产系统工作稳定、安全可靠提供依据。水下连接器工作环境较为复杂,影响其密封性能退化因素较多,故以密封件接触应力强度作为水下连接器密封性能评价指标,通过敏感度分析方法,找到影响密封件接触应力强度的主要因素是工作内压、工作时间和位移载荷这3个随机变量。为了进一步确定这3个随机变量与接触应力强度之间的关系,开展连接器密封性能预测模型的研究。使用试验设计方法随机抽取工作内压、工作时间、位移载荷这3个随机变量数据,将这些数据代入Abaqus软件中进行有限元分析,得出相对应的密封接触应力强度值,然后使用Kriging模型将这3个变量与接触应力强度之间的关系进行拟合,得到密封性能与影响因素间的响应关系,实现对水下连接器性能退化的预测。
The underwater connector is the key node of the whole production system,and once the seal failure,the consequence is unimaginable,so it is necessary to evaluate the reliability of the connector to provide a basis for the stability,safety and reliability of the underwater production system.The working environment of the underwater connector was more complex and there were many factors affecting its sealing performance degradation,so the evaluation index of the sealing performance of the underwater connector was taken as the contact stress strength of the sealing element,and the sealing performance of the underwater connector was evaluated by the sensitivity analysis method,it was found that the main factors affecting the contact stress intensity of the seal were the three random variables of working pressure,working time and displacement load.In order to further determine the relationship between these three random variables and contact stress intensity,the sealing performance prediction model of connector was studied.Firstly,the test design method was used to randomly extract the data of internal pressure,working time and displacement load,and substitute these data into the Abaqus software for finite element analysis to obtain the corresponding seal contact stress intensity value.And then the Kriging model was used to fit the relationship between the three variables and contact stress intensity,and the response relationship between sealing performance and influencing factors was obtained.
作者
薛羽馨
曾威
任涛
吴为
Xue Yuxin;Zeng Wei;Ren Tao;Wu Wei(Mechanical Engineering College,Xi'an Shiyou University,Xi'an 716000,China)
出处
《机电工程技术》
2022年第2期42-45,共4页
Mechanical & Electrical Engineering Technology
基金
陕西省自然科学基础研究计划项目(编号:2019GY-147,2021JQ-874)
陕西省教育厅科研计划项目(编号:20JK0833)。
