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Accurate Response Analysis of Seismic Distributed Mass Systems

by Chaoying Luo, Martin & Huang Intl Inc, Los Angeles, United States,
Franklin Y. Cheng, Martin & Huang Intl Inc, Los Angeles, United States,



Document Type: Proceeding Paper

Part of: Electronic Computation

Abstract:

A dynamic analysis technique of distributed mass structures is presented with a combination of the dynamic load factor approach and the dynamic stiffness matrix method. The dynamic stiffness coefficients are derived from partial differential equations and the dynamic load factor is used in specifying the load-time variation. The structural response is obtained from the dynamic stiffness method with consideration of both Bernoulli-Euler theory and Timoshenko theory. The external loads can be any type of the time-dependent forces or ground excitations with and without damping and the structures can be continuous beams and rigid frames. Numerical examples are provided to show the accuracy and versatileness of the method. It is believed that the proposed method yields more accurate solutions than any other methods currently in vogue.

Subject Headings: Dynamic loads | Structural dynamics | Stiffening | Dynamic structural analysis | Seismic loads | Load and resistance factor design | Earthquake resistant structures

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