Estimation of Hysteretic Energy of MDOF Structures Based on Equivalent SDOF Systems
It is important for obtaining the relationship between seismic energies of single degree-of-freedom (SDOF) systems and multiple degree-of-freedom (MDOF) structures in engineering. In this paper, the formula of hysteretic energy between the MDOF structures and equivalent SDOF systems is developed. Here is also presented the procedure for estimating hysteretic energy of MDOF structures subjected to severe ground motions employing the energy relation equation based on equivalent SDOF systems. Eight examples for two regular and six irregular MDOF structures show that the procedure to obtain the hysteretic energy demands of MDOF structures may be used as a simple and effective energy estimation method.
N. Ohno and T. Uehara
H. N. Li et al., "Estimation of Hysteretic Energy of MDOF Structures Based on Equivalent SDOF Systems", Key Engineering Materials, Vols. 340-341, pp. 435-440, 2007