摘要
基于系统工程思想,运用频域分析方法,对轨道结构随机振动特性进行仿真计算与分析,并结合铁路现场测试结果对理论计算结果进行试验验证。结果表明:钢轨振动能量主要集中在1300Hz附近,而中、低频率的振动主要体现为轨枕与道床的振动;在整个分析频域范围之内,仿真计算得到的轨道结构振动加速度功率谱密度与试验测试结果吻合较好,且轨道结构振动加速度平均值的计算与试验结果差异不大。
From the systems engineering point of view, the random vibration characteristics of track structure are simulated and the simulation results are verified with the field experiments on frequency domain method in this paper. Results show that vibration energy of rail is concentrated nearby 1 300 Hz and energies in low and medium frequency are mainly reflected in the vibrations of sleeper and ballast. In total frequency domain, it is good correlation in power spectral density of track accelerations between simulation and experiment and the difference in awerage accelerations of track structure with two type results is not obvious.
出处
《机械工程学报》
EI
CAS
CSCD
北大核心
2005年第11期149-152,157,共5页
Journal of Mechanical Engineering
基金
高等学校博士点基金资助项目(20030613011)。
关键词
轨道
振动
频域
验证
系统工程
Track Vibration Frequency domain Verification Systems engineering
