The modified fatigue stiffness calculation of corroded reinforcement concrete beams was introduced in this study.
在实验基础上，本文提出了锈蚀钢筋混凝土梁疲劳刚度修正计算公式。
A stiffness calculation method for stepped spindle is presented by combining the approach of initial parameter with the optimization method.
将初参数法与优化方法相结合，提出了阶梯主轴部件刚度的计算方法。
In the respect of modeling technique, the influence of bolt stiffness calculation formula, bolt modeling method, temperature and mesh density were investigated.
在建模方法方面，研究螺栓刚度计算方法、螺栓建模方法、温度和网格密度等因素的影响规律。
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