对John D Ferry剪切波传播模型进行修正,建立剪切波在线性粘弹性流体中的传播模型,并根据剪切作用下流体的运动方程、流体的本构方程及一阶麦克斯韦模型,推导剪切波在线性粘弹性流体中的传播方程.运用衰减波定式,求解剪切波在线性粘弹...对John D Ferry剪切波传播模型进行修正,建立剪切波在线性粘弹性流体中的传播模型,并根据剪切作用下流体的运动方程、流体的本构方程及一阶麦克斯韦模型,推导剪切波在线性粘弹性流体中的传播方程.运用衰减波定式,求解剪切波在线性粘弹性流体中传播的表达式,探讨流体粘度等流变性参数对剪切波传播特性的影响,为进一步研究机械振动对线性粘弹性流体流变性的影响打下基础.展开更多
The smart magneto-rheological visco-elastomer (MRVE) has a promising application to vibration control.Its dynamic characteristics are described by complex moduli which are applicable to linear dynamics.However,experim...The smart magneto-rheological visco-elastomer (MRVE) has a promising application to vibration control.Its dynamic characteristics are described by complex moduli which are applicable to linear dynamics.However,experimental results show remarkable nonlinear relations between force and deformation for certain large deformations,and the nonlinear dynamic modeling needs to be developed.The present study focuses on the nonlinear dynamic characteristics of MRVE.The MRVE was fabricated and specimens were tested to show nonlinear mechanical properties and dynamic behaviors.The nonlinear effect induced by applied magnetic fields was investigated.A phenomenological model for the dynamic behaviors of MRVE was proposed to describe the nonlinear elasticity,linear damping and hysteretic effect,and the corresponding equivalent linear model in the frequency domain was also given for small deformations.The proposed model is applicable to the dynamics and control analysis of composite structures with MRVE.展开更多
文摘对John D Ferry剪切波传播模型进行修正,建立剪切波在线性粘弹性流体中的传播模型,并根据剪切作用下流体的运动方程、流体的本构方程及一阶麦克斯韦模型,推导剪切波在线性粘弹性流体中的传播方程.运用衰减波定式,求解剪切波在线性粘弹性流体中传播的表达式,探讨流体粘度等流变性参数对剪切波传播特性的影响,为进一步研究机械振动对线性粘弹性流体流变性的影响打下基础.
基金supported by the National Natural Science Foundation of China (Grant No. 11072215)the Fundamental Research Funds for the Central Universitiesthe Hong Kong Polytechnic University through the Development of Niche Areas Programme (Grant No. 1-BB95)
文摘The smart magneto-rheological visco-elastomer (MRVE) has a promising application to vibration control.Its dynamic characteristics are described by complex moduli which are applicable to linear dynamics.However,experimental results show remarkable nonlinear relations between force and deformation for certain large deformations,and the nonlinear dynamic modeling needs to be developed.The present study focuses on the nonlinear dynamic characteristics of MRVE.The MRVE was fabricated and specimens were tested to show nonlinear mechanical properties and dynamic behaviors.The nonlinear effect induced by applied magnetic fields was investigated.A phenomenological model for the dynamic behaviors of MRVE was proposed to describe the nonlinear elasticity,linear damping and hysteretic effect,and the corresponding equivalent linear model in the frequency domain was also given for small deformations.The proposed model is applicable to the dynamics and control analysis of composite structures with MRVE.
