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局部非线性轴系振动稳态响应计算方法
引用本文:龚宪生. 局部非线性轴系振动稳态响应计算方法[J]. 重庆大学学报(自然科学版), 1999, 22(3): 15-23
作者姓名:龚宪生
作者单位:重庆大学机械工程学院
基金项目:国家教育部博士点专项基金
摘    要:对有非线性迟滞特性联轴器的船舶推进轴系振动稳态响应计算方法进行研究。在计入联轴器非线性动刚度和迟滞非线性阻尼的情况下,以GLM法为基础,提出一种称为SSGILM的方法,用于计算局部具有非线性动刚度和迟滞阻尼特性轴系的振动稳态响应。

关 键 词:轴系 稳态响应 船舶 推进轴系 振动 联轴器
文章编号:1000-582x(1999)03-0015-09

Method for Calculating Steady Vibration Response of Shafting with Local Nonlinearity
GONG Xian sheng. Method for Calculating Steady Vibration Response of Shafting with Local Nonlinearity[J]. Journal of Chongqing University(Natural Science Edition), 1999, 22(3): 15-23
Authors:GONG Xian sheng
Affiliation:GONG Xian-sheng(College of Mechanical Engineering, Chongqing University, Chongqing 400044,China)
Abstract:A method which is used for calculating steady vibration response of shipping propulsion shafting connecting with a coupling with nonlinear hysteresis characteristics are studied. On condition that the nonlinear dynamic stiffness and hysteresis damping of the coupling be considered, on the basis of GLM(Galerki Levenberg Marquard) method, a method called SSGILM(Separate System Galerkin and Improved Levenberg-Marquardt)to be used for calculating steady vibration response of propulsion shafting with local nonlinear dynamic stiffness and hysteresis damping, is proposed. A simple example is given out and the analyses show that it is effective to calculate steady vibration response of the shafting with local nonlinear dynamic stiffness and hysteresis damping by SSGILM method. From initial response values given arbitrarily, the automatic search algorithm in SSGILM method can converge the given initial response values to the response values accorded with required accuracy quickly; nonlinear dynamic stiffness and hysteresis damping of the coupling have different effect on vibration response of the shafting at different range of frequency. At the area of close nature frequency of the shafting ,displacement amplitude of the shafting is bigger. Beyond the range, the characteristics of the coupling have restraint effect on vibration of the shafting.
Keywords:nonlinearity  shafting  steady response  calculating method
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