环境温度变化时移动荷载作用下带式舟桥的1/3次亚谐共振分析

英文篇名：Analysis of 1/3 subharmonic resonance of belt boat-bridge subjected to moving harmonic excitation in temperature field
中文刊名：河北工业大学学报
英文刊名：Journal of Hebei University of Technology
作者：陈涛 ; 葛庆子
英文作者：CHEN Tao1 ; GE Qing-zi2(1.Department School of Civil Engineering ; Tangshan College ; Hebei Tangshan 063000 ; China ; 2.Key Laboratory of Earthquake Engineering and Sructural Retrofit ; Beijing University of Technology ; Beijing 100022 ; China)
中文关键词：带式舟桥 ; 多尺度法 ; 非线性振动 ; 速度反馈
英文关键词：belt boat-bridge ; the method of multiple sales ; nonlinear vibration ; velocity feedback coefficient
出版日期：2011-02-15
机构：唐山学院土木工程系;北京工业大学工程抗震与结构诊治北京市重点实验室;
年：2011
期：01
出版单位：河北工业大学学报

摘要

研究带式舟桥在温度场中受简谐荷载作用的1/3次亚谐共振问题.应用弹性理论和Galerkin方法建立带式舟桥在温度场中受简谐荷载作用的非线性振动方程.应用多尺度法,求得系统1/3次亚谐共振的近似解,并对其进行数值计算.分析了调谐值,荷载幅值,温差,阻尼比等对系统响应曲线的影响,同时研究了速度反馈增益对带式舟桥系统1/3次亚谐共振的控制作用.研究表明,温差和阻尼对系统的1/3次亚谐共振有抑制作用,速度反馈增益对于控制舟桥系统的1/3次亚谐共振幅值和共振区域的大小比较有效.
tudy on 1/3 subharmonic resonance of a belt boat-bridge subjected to moving harmonic excitation in tempera-ture field.Applying the elastic theory and Galerkins' method,the nonlinear dynamical equation of a belt boat-bridge sub-jected to moving harmonic excitation in a temperature field is established.By means of the method of multiple scales,the approximate solution of the 1/3 subharmonic resonance of the system is obtained and numerical calculations are carried out.The influences of the detuning,load,damping ratio and temperature on the response curves of the system are researched.Meanwhile the control of the velocity feedback coefficient to 1/3 subharmonic resonance are analyzed.

引文

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