【摘要】 在许多工程问题中 ,结构参数和荷载具有某种程度的误差或不确定性。若不将它们定量化或模型化加以考虑 ,就不能作出合理的分析和设计。考虑到有限元法在科学界和工程界的广泛应用 ,本文以连续梁结构为例 ,建立了基于单元的静力区间有限元法。为了说明本方法的有效性 ,本文给出了一个数值例子 ,并把所得结果与文献 [1 2 ]进行了比较。更多还原

【Abstract】 In many practical engineering problems, the structural parameters and loads are uncertain. If they are not modeled, it is not sensible to analysis and design. Considering that the finite element method is commonly used in science and technology fields, a static interval finite element method based on the element is established in this paper, and a continuous beam structure is taken, as an example. From comparison of the numerical results with the results of Chen S H and Yang X W, it can be shown that the proposed method is effective.更多还原