大跨度橋梁顫、抖振分析：有限元及隨機(jī)參數(shù)激勵(lì)解.pdf

大跨度橋梁顫、抖振分析：有限元及隨機(jī)參數(shù)激勵(lì)解l

開發(fā)了分析大跨度橋顫振失穩(wěn)、抖振響應(yīng)及其之間相互影響的有限元程序。
在隨機(jī)參數(shù)激勵(lì)(RPE)
分析中采用顫振導(dǎo)數(shù)代替以前研究人員使用的指數(shù)函數(shù)，這使有限元的求解成為可能，并使RPE分析比以前節(jié)省
時(shí)間。
使用該有限元程序，多個(gè)模態(tài)可以很容易地包括在顫、抖振的分析中。
在顫振分析中，用戶可以選擇RPE
方法或特征值方法；在抖振分析中，可以選擇RPE或譜分析法。

Developed the analysis of large span bridge flutter instability, buffeting response and its interaction between the finite element program. In the random parametric excitation (RPE)
 Analysis of flutter derivatives used in place of the previous researchers used the exponential function, which makes it possible to solve the finite element, and to save than ever before RPE analysis
 Time. Using the finite element program, a number of modes can be easily included in the flutter, buffeting analysis. In the flutter analysis, the user can choose to RPE
 Eigenvalue method or methods; in the buffeting analysis, you can select the RPE or spectral analysis.