【求助】（已应助）三篇外文文献,谢谢了!

Correlation between Strain-Based Low-Cycle Fatigue and Energy-Based Linear Damage Models
Y.H. Chai, M.EERI and K.M. Romstad, M.EERI
Earthquake Spectra, Volume 13, Issue 2, Pages 191-209 (May 1997)
没有下载全文的权限



ABSTRACT:

Although the potential for cumulative damage of structures during long duration earthquakes is generally recognized, most design codes do not explicitly takes into account the damage potential of such events. In this paper, a strain-based low-cycle fatigue model commonly used for the prediction of fatigue life in metals is adapted for cumulative damage assessment of structures under seismic conditions. By defining the number of load cycles in terms of the total plastic strain energy dissipated by the structure, the model is presented in a form capable of predicting the plastic strain energy capacity of the structure at the ultimate limit state. The plastic strain energy is expected to decrease rapidly with increased displacement in the small displacement range and to decrease gradually in a near linear manner with increased displacement in the large displacement range. The model is shown to calibrate reasonably well with small-scale aluminum cantilever specimens tested under large-amplitude reversed cyclic loading. At the ultimate limit state, the modified Park and Ang damage model may be considered as a linear approximation to the low-cycle fatigue model in the large displacement range.

谢谢你jzhiquan
关键是要查出它的馆藏,国内是否有. 是不成问题的.
第1篇我已经知道了它的馆藏,主要是第2.3篇的馆藏.
再次感谢你!!!!

有第一篇文献，要不要？
其余两篇怎么也找不到啊

如果有,请你发给我.谢谢
xiaominghan@163.com