起重运输机械Issue(4)：32-37,6.
基于罚函数的桥式起重机地震跳轨仿真分析
摘要
Abstract
The contact coupling relationship between the big wheel and the small wheel of the bridge crane and the track was established by using the penalty function,and the contact relationship between the big wheel and the track and the small wheel and the track in the operation of the bridge crane was simulated,and the correctness of the finite element model of the crane was judged by static analysis.Through incremental dynamic analysis(IDA),the ground motions with different seismic accelerations under the same seismic excitation were obtained,and the vibration of crane in the earthquake was analyzed by time-history analysis method,and the wheel pressures of large and small wheels were tracked to obtain the time-history curve of wheel pressures.According to the analysis of wheel pressure data,the conditions for judging crane jump on track were put forward.The results show that the contact coupling based on the penalty function can well simulate the stress of the crane in the earthquake and obtain the wheel pressure data,and the time point when the crane jumps and the falling impact force can be quickly captured through the jumping condition.关键词
桥式起重机/罚函数/接触耦合/跳轨Key words
bridge crane/penalty function/contact coupling/jump on track分类
机械制造引用本文复制引用
杨益,程文明..基于罚函数的桥式起重机地震跳轨仿真分析[J].起重运输机械,2024,(4):32-37,6.基金项目
国家自然科学基金(51675450)、四川省科技计划项目(2022YTG0241) （51675450）
