by H. Krawinkler and A. Nassar
Krawinkler, H. and A, Nassar (1990). Strength and Ductility Demands for SDOF and MDOF Systems Subjected To Whittier Narrows
Earthquake Ground. SMIP 1990 Seminar on Seismological and Engineering Implications of Recent Strong-Motion Data, p. 3-1 - 3-10.
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This paper summarizes parts of a project that is concerned with an evaluation of the damage potential of the October 1, 1987 Whittier Narrows
ground motions. The discussion focuses on strength and ductility demands imposed by these ground motions on single degree of freedom (SDOF)
and multi-degree of freedom (MDOF) systems. In the SDOF study, bilinear as well as stiffness degrading models are evaluated. A procedure is
presented that permits the evaluation of strength demands for MDOF systems based on inelastic strength demand spectra of SDOF systems.