计算力学学报2024，Vol.41Issue(4)：769-774,6.DOI:10.7511/jslx20230105002
简支矩形薄壁箱梁受不确定移动偏载作用的竖向振动响应研究
Study on vertical vibration response of simply supported rectangular thin-walled box girder subjected to uncertain moving eccentric load
黄文建 1刘放 1杨明发 1李晨晖 1邓蓉1
作者信息
- 1. 西南交通大学机械工程学院,成都 610031
- 折叠
摘要
Abstract
Aiming at solving the vibration problem of a thin-walled box girder subjected to an uncertain moving eccentric load in engineering,a method based on interval process is proposed to determine the vertical vibration response boundary of a simply supported rectangular thin-walled box girder structure.Based on the modified Timoshenko beam theory,Umanskii's second theory and box girder deformation theory,the analytical solution of the forced vertical vibration of a simply supported rectangular thin-walled box girder considering section torsion and distortion under a moving eccentric load is obtained.The calculation process of vertical vibration response boundary of simply supported rectangular box girder is derived by introducing interval process to describe the uncertainty of moving eccentric load,and the influence of the correlation of uncertain parameters and load speed on the vertical vibration response of the simply supported rectangular thin-walled box girder is analyzed.The correctness of the method in this paper is verified by comparison with the calculation results of the finite element method.关键词
简支矩形薄壁箱梁/移动偏载/区间过程/竖向振动/动态响应边界Key words
simply supported rectangular thin-walled box girder/moving eccentric load/interval process/vertical vibration/dynamic response boundary分类
数理科学引用本文复制引用
黄文建,刘放,杨明发,李晨晖,邓蓉..简支矩形薄壁箱梁受不确定移动偏载作用的竖向振动响应研究[J].计算力学学报,2024,41(4):769-774,6.
