کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
510684 | 865782 | 2006 | 13 صفحه PDF | دانلود رایگان |
The goal of this investigation is to assess the quality of high-cycle-fatigue life estimation via a reduced order method for structures undergoing geometrically nonlinear random vibrations. Modal reduction is performed with several different suites of basis functions. After numerically solving the reduced order system equations of motion, the physical displacement time history is obtained by an inverse transformation and stresses are recovered. Stress ranges obtained through the rainflow counting procedure are used in a linear damage accumulation method to yield fatigue estimates. Fatigue life estimates obtained using various basis functions in the reduced order method are compared with those obtained from numerical simulation in physical degrees-of-freedom.
Journal: Computers & Structures - Volume 84, Issues 24–25, September 2006, Pages 1606–1618