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Time-delay damping theory

Hong Feng (洪 峰)
Institute of Engineering Mechanics, China Seismological Bureau, Harbin 150080, China

Abstract: In this paper, existing damping theories are briefly reviewed. On the basis of the existing damping theories, a new kind of damping theory, i.e., the time-delay damping theory, is developed. In the time-delay damping theory, the damping force is considered to be directly proportional to the increment of displacement. The response analysis of an SDOF time-delay damping system is carried out, and the methods for obtaining the solution for a time-delay damping system in the time domain as well as the frequency domain are given. The comparison between results from different damping theories shows that the time-delay damping theory is both reasonable and convenient.

Keywords: viscous damping; complex damping; time-delay damping; damping force