The random responses of local multiaxial stress and strain were accurately calculated by the taylor expansion elastoplastic stochastic finite element method under cyclic loading 交变载荷下taylor展开弹塑性随机有限元可精确计算局部多轴应力应变的随机响应。
Based on the stochastic finite element method, the reliability of the arch dam gravity abutment is analyzed, and the corresponding reliability index is calculated 然后在随机有限元的基础上进行拱坝的拱座??重力墩的强度和抗滑稳定可靠度分析,计算相应的可靠指标。
Combining the stochastic variational principle with the thin-walled box girders theory, the one-dimensional stochastic finite element method for thin-walled box girders is proposed . 2 结合随机变分原理和薄壁箱梁理论,推导出薄壁箱梁随机分析的一维离散随机有限元法。
Finally, considering the piles and foundation soil as a whole, the reliability index of the pile foundation with check working conditions is calculated by using the stochastic finite element method 最后,把桩和地基土作为整体,运用随机有限元法计算了校核工况下桩基础的可靠指标。
But the work that analyses viscoelastic random structures is almost not covered heretofore . in this paper, by order expansion stochastic finite element method, a calculation model used in analyzing the response of 随机和确定结构计算的结果表明,当考虑参数随机时,位移响应将发生变化,有必要考虑随机的情况。
The one dimensional discretized stochastic finite element method is combined with the theory of thin-walled box girders, and the method for reliability analysis of thin-walled box girders is established . 3 将它与薄壁箱梁一维离散随机有限元法相结合,提出了基于随机有限元法的薄壁箱梁可靠度计算方法和具体实施步骤。
Based on the theories of finite element and reliability, the basic idea about application of the stochastic finite element method used to analyze the abutment stability against sliding of the arch dam is presented in this paper 本文以有限元理论和可靠度理论为基础,提出了应用于拱坝坝肩抗滑稳定分析的随机有限元的基本思路。
Then combined with reliability computation, the stochastic finite element method is used to establish the relationship between the load effect ( stress or force ) and basic stochastic variable dealing with statistical features of variables 再与可靠度理论相结合,考虑变量的随机特性,通过随机有限元法建立荷载效应(如应力、内力等)与基本随机变量之间的关系。
Otherwise, this method was applied into solving burgers equation, and the numerical results show that it is a prospective numerical method for nonlinear partial differential equation . e . lastly, the wavelet stochastic finite element method for a stochastic model of soil erosion in a rill was proposed 第五、将随机有限元方法和小波精细积分法相结合提出了对细沟侵蚀模型的统计特性进行分析的小波随机有限元方法。
A new type of viscoelastic stochastic finite element method is established using first-order perturbation theory based on local averaging method of random field and karhunen-loeve expansion theory of random process . the amount of computations is greatly reduced by transforming correlated random variables to a set of uncorrelated random variables . the relations of different random response variables are analyzed and monte carlo simulations for viscoelastic stochastic structures are investigated 基于随机场的局部平均法以及随机过程的karhunen-loeve分解理论,通过一阶随机摄动方法建立了考虑材料近似不可压缩的粘弹性随机有限元公式,由相关结构分解减少计算量,分析了各结构随机响应量之间的关系,给出了数字特征的计算方法,研究了粘弹性随机结构的montecarlo模拟验证方法。