A new approach for the calculation of response spectral density of a linear stationary random multidegree of freedom system

✍ Scribed by A.M. Sharan; S. Sankar; T.S. Sankar

• Publisher: Elsevier Science
• Year: 1982
• Tongue: English
• Weight: 333 KB
• Volume: 83
• Category: Article
• ISSN: 0022-460X
• DOI: 10.1016/s0022-460x(82)80104-1

✦ Synopsis

A new approach for the calculation of response spectral density for a linear stationary random multidegree of freedom system is presented. The method is based on modifying the stochastic dynamic equations of the system by using a set of auxiliary variables. The response spectral density matrix obtained by using this new approach contains the spectral densities and the cross-spectral densities of the system generalized displacements and velocities. The new method requires significantly less computation time as compared to the conventional method for calculating response spectral densities. Two numerical examples are presented to compare quantitatively the computation time.