随机振动分析 meaning in English
random vibration analysis
Examples
- Seismic response analysis of a long - span cable - stayed bridge under random seismic excitations with spatial variations , including travelling effect , incoherence effect and local site effect , was made with stochastic method
摘要以南京第二长江大桥南汉桥为例，采用随机振动分析方法研究了地震动的空间变化特性，包括行波效应、部分相干效应以及局部场地效应对大跨度斜拉桥地震响应的影响。 - The bouc - wen differential equation model is used in modeling the hysteretic characteristics of these components . the pem ( pseudo excitation method ) combined with the elm ( equivalent linearization method ) is used to analyze the non - linear random vibration of such structures
采用bouc - wen等提出的微分方程模型描述进入非线性构件的滞变特性，运用虚拟激励法结合等效线性化进行结构非线性随机振动分析。 - The transverse stiffness limitation index ? the permissible ultimate width / span ratio b / l of the continuous steel truss girder of railway bridge is analyzed in accordance with the analytic theories of random vibration of train ? bridge time - variation system and the required derailment coefficients and comfort of drivers and passengers in train running through the bridge . the limitation index in question may be referred to in the design of the continuous steel truss girders of railway bridges
基于列车-桥梁时变系统随机振动分析理论，按照桥上列车脱轨安全系数和司机、旅客舒适度的要求，对铁路连续钢桁梁桥横向刚度限值-桥梁容许极限宽跨比b / l进行了分析，对铁路连续钢桁梁桥的设计具有一定的参考作用。 - By means of trigonometrical progression method and the mainline track spectrum , the sample function of the chinese mainline railway track random geometric irregularity is simulated . with the data obtained from track geometry inspection car on qinhuangdao - shenyang special line for passenger transport and arma time series model , the sample function of high - speed railway track random geometric irregularity are simulated . based on existing literature , the artificial bogie crawl waves at various different speeds are randomly simulated
根据我国干线铁路轨道谱，采用三角级数法模拟出干线铁路和准高速铁路轨道不平顺的样本函数；根据秦沈客运专线高速试验段轨检车资料，采用arma时间序列模型模拟了高速铁路轨道不平顺随机样本函数；在既有研究资料的基础上模拟出各种速度客车构架人工蛇行波；用随机变量描述道床横向刚度，并进行了随机模拟；将振动理论和稳定理论结合建立系统的分析模型和运动方程；根据monte ? carlo法编制了车辆?轨道耦合系统随机振动分析程序，进行了无缝线路随机动力响应分析，通过试验对计算模型、计算方法进行了验证。