摘要
根据Hasofer-Lind可靠性指标β,基本随机变量构成的标准n维欧氏空间Rn可划分为｝X｝≤β和｝X｝>β两部分,｝X｝≤β为n维β球所围区域,该区域必在可靠区内。计算可靠性时,将Monte-Carlo的抽样区域限制在n维欧氏空间β球外部,缩小了抽样范围,从而大大提高了结构可靠性的计算效率,并给出一算例。
According to the reliability criterion β of Hasofer-Lind, the standard n-dimensional Rn-sphere is composed of two parts:x≤β and x>β. β-ball(x≤β) is definitely inside the reliability sphere. The sampling domain of Monte-Carlo is restricted to the points outside the n-dimensional β-sphere to calculate structural reliability, which has reduced sampling domain and cut down computational time greatly which is shown by an example.
出处
《强度与环境》
2005年第2期52-56,共5页
Structure & Environment Engineering
