以区间数学为理论基础,提出了结构灵敏度分析的区间方法。可以在不用进行求导数运算的条件下,通过区间运算即可获得结构响应(或其性能)随结构参数(或设计变量)的变化情况。在强非线性情况下,区间灵敏度分析方法对参数变化范围的选取比差分法或摄动法的要求要低。通过数值算例表明了用区间方法进行结构灵敏度分析的可行性和有效性。 Based on interval mathematics, the interval method of structural sensitivity analysis is proposed. The structural response (or its performance) with structural parameters (or design variables) can be obtained through interval calculations without using the derivative operation. In the case of strong nonlinearity, the range sensitivity analysis method has lower requirements for the range of parameter variation than the difference or perturbation methods. The numerical example shows the feasibility and validity of the method of interval sensitivity analysis.