基于频域的S-lay托管架疲劳分析  

Fatigue Analysis of the S-lay Stinger Based on the Frequency Domain Theory

作　　者：薛志钢[1,2] 蔡志勤[2] 曹先凡 岳前进[2] 刘世龙[2] 

机构地区：[1]江苏省特种设备安全监督检验研究院无锡分院,江苏无锡214174 [2]大连理工大学工业装备国家重点实验室,辽宁大连116023 [3]中国石油集团工程技术研究院,天津300451

出　　处：《船海工程》2015年第6期153-157,共5页Ship & Ocean Engineering

基　　金：973项目(2014CB046803)

摘　　要：根据船体随机荷载对托管架的影响,用等效质量的方法将托管架-管道进行解耦,用虚拟激励法建立船体随机运动作用下托管架的虚拟动力学方程,并将虚拟激励法的平稳随机振动分析转化为简谐振动分析,利用ANSYS求解,应用Dirlik方法得到托管架的疲劳寿命,提出在频域内利用ANSYS和虚拟激励法对托管架进行疲劳寿命评价的方法。According to the characteristics that stinger is subjected to hull random loading,a evaluation method in frequency domain by ANSYS and pseudo excitation method for stinger＇s fatigue life is proposed. The method of equivalent quality is used to decouple the stinger with pipes,so as to establish a stinger pseudo kinetic equation in random motion of the hull by the pseudo excitation method,translating the stationary random vibration analysis of pseudo excitation method into simple harmonic vibration analysis. The responses of the stinger structure are calculated by ANSYS,and the Dirlik method is applied to obtain its fatigue life. puts forward the stinger fatigue life evaluation in the frequency domain method.

关 键 词：托管架 随机振动 ANSYS 虚拟激励法 

分 类 号：U674.38[交通运输工程—船舶及航道工程]