PRECISE TIME INTEGRATION OF MIXED TYPE FOR ANALYSIS OF MULTI-COMPONENTS NON-STATIONARY RANDOM SEISMIC RESPONSE

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Journal of Vibration and Shock ›› 2009, Vol. 28 ›› Issue (10) : 199-202.

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PRECISE TIME INTEGRATION OF MIXED TYPE FOR ANALYSIS OF MULTI-COMPONENTS NON-STATIONARY RANDOM SEISMIC RESPONSE

Meng Wen-liu;Wei Shu-ying

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Abstract

Based on one-component pseudo-excitation method, the pseudo-excitation method under multi-components and mean modulation non-stationary seismic excitation is developed by the use of PSD separation , and a number of high-precision quadratures are developed corresponding to various evolutionary random excitations . A mixed use of such quadratures leads to accurate and very efficient analyses of structural time-dependent power spectral densities . At last , a numerical example is introduced to discuss the effect of correlation of the ground motion components on the seismic responses of asymmetric structure , and several significant conclusions are given

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seismic response / non-stationary excitation / multi-component excitation / precise integration

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Meng Wen-liu;Wei Shu-ying. PRECISE TIME INTEGRATION OF MIXED TYPE FOR ANALYSIS OF MULTI-COMPONENTS NON-STATIONARY RANDOM SEISMIC RESPONSE[J]. Journal of Vibration and Shock, 2009, 28(10): 199-202