Based on the equivalent transformation from fuzzy possibility distribution (FPD) to random probability density distribution (PDD), the fuzzy random failure probability calculation can be formulated easily, and a First Order and Second Moment (FOSM) method for fuzzy - random analysis is established.
提出了模糊随机可靠性分析的近似解析和数字模拟综合方法,基于模糊变量的等价随机化变换,可以方便地得到模糊随机失效概率的计算公式,并建立了模糊随机可靠性分析的一次二阶矩法。
A new iterative algorithm is presented for seeking the design point in the FOSM reliability index analysis.
针对一次二阶矩法可靠度指标分析中验算点的计算问题,提出一种新的修正迭代算法。
Reliability analysis of prestressed steel structural system on FOSM;
基于一次二阶矩法(FOSM)建立了索张拉预应力钢桁架任意单元失效模式可靠性指标的计算模型,并分别根据点估计法和窄界限法得到了整体结构失效概率的计算公式,随机内力统计特性—均值和标准差则根据随机摄动理论确定。
Calculation of the bolt binging reliability based on improved linear second order moment;
用改进的一次二阶矩法求螺栓联接的可靠度
On the basis of building power function by the reliability theory,comparison and analysis of the two methods of LOSM(linear second order moment)are made on the solution to the power function,and check calculation is carried out on the slope reliability index.
在利用可靠度理论建立功能函数的基础上,对功能函数的求解进行了一次二阶矩两种方法的比较与分析,并对边坡的可靠指标进行了验算。
The R F first order second moment method will produce more error for calculating the reliability of welded engineering pipe structures when the failure function is seriously nonlinear and the random variables don′t serve as normal distribution.
在对工程焊接管道结构的缺陷进行可靠性安全评定工作中,如果失效函数的非线性程度较严重和随机变量不服从正态分布,利用R-F一次二阶矩(FOSM)方法计算结构的可靠度会带来较大的计算误差。
Method of First Order Second Moment is used to establish the computational model.
本文基于随机摄动理论建立了任意索张拉平面预应力钢桁架随机内力统计特性分析的计算公式,模型中的基本随机参数包括折线索单元截面面积、桁架单元的截面面积、张拉钢索的预拉力、外荷载以及影响单元可靠性的抗拉强度及杆单元的轴心受压稳定系数等,并利用一次二阶矩法建立了任意单元失效模式的可靠度指标与验算点的迭代模型,为索张拉预应力钢结构整体可靠性分析奠定了一定的理论基础。
Discussion on the first-order second-moment method of project structural reliability analysis
工程结构可靠度分析的一次二阶矩法探讨
Fuzzy reliability analysis of bolt coupling
基于一次二阶矩法的螺栓联接模糊可靠性分析
Sandy Soil Liquefaction Assessment Method Based on Improved Linear Second Order Moment Method
基于改进一次二阶矩法的砂土液化判别方法
A study of the circular arc gear reliability based on improved FOSM method
基于改进一次二阶矩法的圆弧齿轮传动可靠性研究
The General Form of A djoint of kth degree of N-th-order s Square-Matrix;
n阶方阵的k次伴随矩阵的一般形式
A Blind Detection Method of DS-CDMA Signal Based on the Quadratic Fourth-order Moment Chip
基于二次4阶矩切片的DS-CDMA信号盲检测
Some bounds of the distribution of outstanding claims reserve based on the expectation and variance;
基于一阶矩和二阶矩的未决赔款准备金分布函数的界值
A Method for Simplifying Quadrics through Matrix Operations;
一种通过矩阵运算化简二次型的方法
An Unique Solution of Quadratic Matrix Equation X~2-2AX+B=0
二次矩阵方程X~2-2AX+B=0的唯一解
Periodic Solutions of Second-order Hamiltonian Systems with Super-quadratic Potentials
一类二阶超二次哈密顿系统的周期解
CALCULATION OF THE FIRST AND SECOND ORDER PARTIAL DERIVATIVES OF EIGENPAIRS OF QUADRATIC EIGENVALUE PROBLEMS
二次特征值问题特征对的一阶与二阶偏导数
This paper inquires into the problem of finding an upper bound for the expectation of recourse function when only first and second momen t constraints are available.
探讨了在随机向量的一阶矩和二阶矩条件下，寻找补偿函数的期望值的一个上界的问题.
Periodic and Subharmonic Solutions for a Class of Second Order Hamiltonian Systems
一类二阶Hamilton系统的周期解和次调和解
Integral Criterion of One Kind of Second-Orden Ouaclratic Equation And Reduction of Its Integrals to Common Denominaton;
一类二阶二次微分方程的可积判据及其通积分
A recognition method of small target based on improved order- normalized moment invariants is improved, which separates the satellite image into subimages, and greyness variances are used to represent subimages feature.
提出了一种基于改进的阶次规正不变矩卫星图像小目标识别方法。
Numerical Methods for Solving Least Squares Problem with Quadratic Constraints and a Matrix Equation;
带二次约束的最小二乘问题及一类矩阵方程的数值解法
The Bargmann System and C.Neumann System Related to the Second-Order Eigenvalue Problem;
一个与二阶矩阵特征值问题相联的Bargmann系统和C.Neumann系统
Hermite Cubic Spline Wavelets with High Order Vanishing Moments
高阶消失矩的Hermite三次样条小波