first-order second-moment method

基本解釋

The first-order second-moment method is employed to calculate the reliability of girders, and to evaluate whether the carrying capacity is safe or not.
運用一次二階矩法計算主梁關(guān)鍵截面可靠度指標，評價主梁承載能力是否基于安全期內(nèi)。
The first-order second-moment method is fundamental in structural reliability analysis, its accuracy depends upon the nonlinear extent of performance functions around checking point.
一次二階矩方法是結(jié)構(gòu)可靠度分析的基本方法．一次二階矩方法的計算精度依賴于驗算點附近功能函數(shù)的非線性程度。
The present usually reliability analysis method for engineering structures are Monte Carlo Simulate (MCS), First-order Second-moment method (FOSM) and Reliability Surface Method (RSM).
現(xiàn)有基本的結(jié)構(gòu)可靠度計算方法可分為一次二階矩法、蒙特卡羅法和響應(yīng)面法。