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گواهی نمایه سازی مقاله A Study on the Effects of Frequency contents of External Disturbances on the Input Energy

عنوان مقاله: A Study on the Effects of Frequency contents of External Disturbances on the Input Energy
شناسه (COI) مقاله: NCTOCE01_002
منتشر شده در کنفرانس ملی تکنیکهای نوین محاسباتی و بهینه سازی در مهندسی عمران در سال ۱۳۹۲
مشخصات نویسندگان مقاله:

Omid Bahar - Assistant Professor, Structural Dynamics Department, International Institute of Earthquake Engineering and Seismology (IIEES), Iran
Somayeh Malmir - Member of Payamnoor University, Iran
Rahman Mirzaei - Member of Civil Engineering Faculty, Islamic Azad University, Bonab Branch, Bonab, Iran

خلاصه مقاله:
During past decades, remarkable studies have been devoted to the construct an energy based design guideline. But because the presence of numerous unknowns, it has not yielded tangible advances. Previous studies indicate that the amounts of input energy as well as variation of its quantity depend onthe characteristics of ground acceleration and dynamic properties of structures. In this paper, to provide a precise insight to the effects of such factors, mainly the frequency contents of input excitation, a detailed study is carried out. The structure is idealized as a single degree of freedom. Also a harmonic sinusoidalload with different frequency contents is used as external disturbances. Extensive analysis show that the input energy doesn’t maximum on the resonant frequency precisely, moreover damping ratio only effective in limited margin, around dominant frequency, even beyond this border increasing damping ratio leads to unfavorable results

کلمات کلیدی:
input energy, frequency content, damping ratio, single degree of freedom

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