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《Journal of Anyang Institute of Technology》 2006-06
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An Approximate Method for Free Vibration of Non-Proportionally Damped Systems

QIN Jin-qi WANG Su-guang(Department of Engineering Mechanics, Hunan University, Changsha ,410082)  
An approximate method for free vibration of multi-degree-of-freedom systems with non-proportional damping is presented. The damping matrix is small compared with the mass matrix and the stiffness matrix. Transforming from the physical coordinate to the modal coordinate, we may see the damping matrix as small value. Using the method multiple scales, we can obtain the approximate analytical solution of non-proportionally damped systems.
【CateGory Index】: O322
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