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Nonlinear Damping in Floor Vibrations Serviceability: Verification on a Laboratory Structure

机译:地板振动中的非线性阻尼可维护性:验证实验室结构

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Damping is a critical parameter in dynamics of structures which has been proven to be dependent on the amplitude of the applied force on the structure. This is known as nonlinear damping or amplitude-dependent damping. While the nonlinear characteristics of damping have been studied thoroughly for earthquake and wind loading excitations; it has not been comprehensively studied for floor vibration serviceability applications. This paper focuses on a laboratory structure in an attempt to shed some light on obtaining and verifying the modal damping ratio with experimental and analytical studies. Finite element models were built and updated per static and dynamic tests conducted in laboratory environment. The nonlinear damping behavior of the laboratory structure is verified for different amplitudes of sinusoidal excitations.
机译:阻尼是结构动态的关键参数,其已被证明依赖于结构上施加的力的幅度。这称为非线性阻尼或幅度依赖性阻尼。虽然已经彻底研究了阻尼的非线性特征,用于彻底研究了地震和风力装载刺激;尚未全面研究地板振动可用性应用。本文重点介绍了实验室结构,试图在获得和验证与实验和分析研究中的模态阻尼比率上的一些光线。在实验室环境中进行的每个静态和动态测试建立和更新有限元模型。实验室结构的非线性阻尼行为被验证了对正弦激励的不同幅度。

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