蛙跳下落过程青蛙跳座椅骨架刚柔耦合仿真与校核计算  

Rigid-flexible coupling simulation and checking calculation of frog jump seat frame during frog jump falling

作　　者：赵九峰 ZHAO Jiufeng(Special Equipment Safety Inspection and Research Institute of Henan Province,Zhengzhou 450000,China;Collaborative Innovation Center for Aviation Economy Development of Henan Province,Zhengzhou 450046,China)

机构地区：[1]河南省特种设备安全检测研究院,河南郑州450000 [2]航空经济发展河南省协同创新中心,河南郑州450046

出　　处：《渤海大学学报（自然科学版）》2022年第4期355-360,共6页Journal of Bohai University:Natural Science Edition

基　　金：河南省科技攻关计划项目(No:212102410009)。

摘　　要：青蛙跳在蛙跳下落过程座椅骨架载荷不断变化,传统静力学分析的计算方法不够精确.针对上述问题,在青蛙跳运行特性分析的基础上,通过理论分析获取青蛙跳蛙跳下落的速度方程,通过ANSYS Workbench软件,对青蛙跳进行刚柔耦合瞬态动力学仿真分析,获取蛙跳下落过程中座椅骨架最大应力的时间历程曲线,提取下落周期内的最大应力,并借助相关技术标准对座椅骨架分别进行强度和疲劳校核计算.计算结果表明,蛙跳下落过程座椅骨架的应力逐渐增大,在蛙跳结束时刻,座椅骨架的最大应力61.8 MPa,应力安全系数和疲劳安全系数分别为5.1和2.1,满足安全要求.该研究方法对保证设备运行的可靠性和乘客的生命安全具有重要的现实意义.The traditional statics analysis method is not accurate because the load of Frog jump is constantly changing during its fall.In view of the above problems, based on the analysis of frog jump operation characteristics, the speed equation of frog jump falling is obtained through theoretical analysis.The rigid-flexible coupling transient dynamic simulation analysis of frog jump falling process is carried out through ANSYS Workbench, the time history curve of the maximum stress of the seat frame is obtained, and the maximum stress is extracted.The strength and fatigue of the seat frame are checked and calculated according to relevant standards.The calculation results show that the stress of the seat frame increases gradually during the falling process of frog jump.At the end of frog jump, the maximum stress of the seat frame is 61.8 MPa, and the stress safety factor and fatigue safety factor are 5.1 and 2.1,which meet the safety requirements.This research method has important practical significance to ensure the reliability of equipment operation and the life safety of passengers.

关 键 词：青蛙跳 座椅骨架 刚柔耦合 蛙跳下落 时间历程曲线 疲劳校核 安全系数 

分 类 号：TS952.8[轻工技术与工程]