欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
针对工程中同时存在随机和认知不确定性的问题,提出了一种考虑相关性的概率-证据混合不确定性模型及相应的结构可靠性分析方法。首先引入样本相关系数来描述概率变量之间、证据变量之间以及概率和证据变量之间的相关性,通过一个转换矩阵将原问题中相关的变量转换为相互独立的变量,并构建了一个等效的概率-证据混合可靠性模型。然后将其转化为一系列概率-区间混合可靠性分析模型,并总结了嵌套优化分析迭代格式来求解失效概率区间。最后提供了三个数值算例验证该方法的有效性。
英文摘要：
A probability and evidence hybrid uncertainty model considering parametric correlation was proposed and a corresponding reliability analysis method for problems with both aleatory and epistemic uncertainties was studied.Firstly,sample correlation coefficients were introduced to describe the correlation among probability variables,evidence variables as well as probability and evidence variables.Correlated parameters were transformed into independent ones through a matrix transformation and an equivalent probability-evidence hybrid model was built.Then the hybrid model was transformed into a series of probability-interval models in subspaces and a nested optimization analysis iterative format was summarized to obtain the failure probability interval.At last,three numerical examples were provided to verify the validity of the proposed method.
同期刊论文项目
同项目期刊论文
A new nonlinear interval programming method for uncertain problems with dependent interval variables
A non-probabilistic structural reliability analysis method based on a multidimensional parallelepipe
Non-probabilistic convex model process: A new method of time-variant uncertainty analysis and its ap
Stochastic response analysis of the scaled boundary finite element method and application to probabi
Multidimensionalparallelepiped model—a new type of non‐probabilistic convex model for structural unc
A probabilistic and interval hybrid reliability analysis method for structures with correlated uncer
Multidimensional parallelepiped model-a new type ofnon-probabilistic convex model for structural unc
A new interval comparison relation and application ininterval number programming for uncertain probl
An evidence-theory model considering dependence among parameters and its application in structural r
Probability-interval hybrid reliability analysis for cracked structures existing epistemic uncertain
A time-variant reliability analysis method for structural systems based on stochastic process discre
A structural stress based critical plane method for multiaxial fatigue life estimation in welded joi
Quantitative thermographic methodology for fatigue life assessment in a multiscale energy dissipatio
New method for eigenvector-sensitivity analysis with repeated eigenvalues and eigenvalue derivatives
An improved multidimensional parallelepiped non-probabilistic model for structural uncertainty analy
期刊信息
位置：