【摘要】 基于几何原理,提出了一种求解结构可靠指标的高效实用算法:波动探寻法。该算法计算过程具有随机性和遍历性,在波动探寻过程中引入松弛因子可以控制计算速度和精度。对该算法的计算过程进行仿真演示,借以直观形象地了解幕后程序执行运作情况和算法性能,并详细地进行参数分析。经算例验证,该算法简便实用,为结构可靠度计算提供了新的有效途径,且具有令人满意的计算精度。更多还原

【Abstract】 Based on geometrical principle, an efficient and practical algorithm -fluctuation pursuit algorithm is presented in this paper. The fluctuation pursuit process takes into account the characteristics of randomicity and ergodicity. Relaxation factor is introduced into the pursuit process to control the calculation speed and precision. The simulations and demonstrations make it possible to visualize and comprehend the factual performances and properties of the algorithms, to prosecute the detailed and comprehensive parameters analysis. Two experimental examples validate that the algorithm possesses superb convenience and applicability, and provides an effective approach to the calculation of structural reliability index.更多还原