We ran finite element analysis stress calculations to determine where the frame needed to be reinforced for maximum strength and stiffness, then reinforced those areas with additional carbon fiber.

我们跑应力有限元分析计算，确定了框架需要得到加强的最大强度和刚度，然后加强这些领域更多的碳纤维。

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It is shown that the offset of propulsion force and the lower natural fundamental frequency are caused by asymmetry of turbopump and weakness of connection stiffness between propulsion and frame.

研究表明，涡轮泵不对称以及发动机与机架之间连接刚度弱是引起推力偏心和基频固有频率偏低的主要原因。

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For the reinforced concrete frame structures, the relationship between the story lateral stiffness and lateral load-bearing capacity is studied.

研究了钢筋混凝土框架结构层水平承载力和层抗侧移刚度的关系。

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