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Method and device for determining frictional resistance and tangent rigidity of friction support
The invention discloses a method and device for determining friction resistance and tangent rigidity of a friction support, and relates to the technical field of nonlinear analysis of structures, and the method comprises the steps: obtaining the maximum friction resistance of the support and the sliding speed of the support within a set time period; according to a trigonometric function type relationship among the friction resistance of the support, the tangent stiffness of the support and the sliding speed of the support, establishing a trigonometric function type iterative model of the friction resistance of the support and the tangent stiffness of the support changing along with the sliding speed of the support; and on the basis of the trigonometric function type iterative model, according to the sliding speed change of the support within the set time period, the friction resistance and the tangent rigidity of the support within the set time period are obtained. The problems that in the prior art, a WEN plastic unit is adopted to add a unit mechanical formula into a nonlinear dynamic equation for numerical calculation, gradual integration needs to be carried out, the calculation workload is large, when the integration step is large, the friction resistance calculation result fluctuation is large, and the tangent rigidity cannot be determined are solved.
本发明公开了一种摩擦支座摩阻力和切线刚度确定方法及装置，涉及结构非线性分析技术领域，该方法包括：获取支座最大摩阻力和设定时间段内的支座滑动速度；根据支座摩阻力、支座切线刚度与支座滑动速度之间的三角函数型关系，建立支座摩阻力和支座切线刚度随支座滑动速度变化的三角函数型迭代模型；基于三角函数型迭代模型，根据设定时间段内的支座滑动速度变化，获取设定时间段内的支座摩阻力和支座切线刚度。解决了现有技术中采用WEN塑性单元将单元力学公式加入非线性动力方程进行数值计算，存在需要进行逐步积分，计算工作量大，积分步长大时，摩阻力计算结果波动大，以及无法确定切线刚度的问题。
Method and device for determining frictional resistance and tangent rigidity of friction support
The invention discloses a method and device for determining friction resistance and tangent rigidity of a friction support, and relates to the technical field of nonlinear analysis of structures, and the method comprises the steps: obtaining the maximum friction resistance of the support and the sliding speed of the support within a set time period; according to a trigonometric function type relationship among the friction resistance of the support, the tangent stiffness of the support and the sliding speed of the support, establishing a trigonometric function type iterative model of the friction resistance of the support and the tangent stiffness of the support changing along with the sliding speed of the support; and on the basis of the trigonometric function type iterative model, according to the sliding speed change of the support within the set time period, the friction resistance and the tangent rigidity of the support within the set time period are obtained. The problems that in the prior art, a WEN plastic unit is adopted to add a unit mechanical formula into a nonlinear dynamic equation for numerical calculation, gradual integration needs to be carried out, the calculation workload is large, when the integration step is large, the friction resistance calculation result fluctuation is large, and the tangent rigidity cannot be determined are solved.
本发明公开了一种摩擦支座摩阻力和切线刚度确定方法及装置，涉及结构非线性分析技术领域，该方法包括：获取支座最大摩阻力和设定时间段内的支座滑动速度；根据支座摩阻力、支座切线刚度与支座滑动速度之间的三角函数型关系，建立支座摩阻力和支座切线刚度随支座滑动速度变化的三角函数型迭代模型；基于三角函数型迭代模型，根据设定时间段内的支座滑动速度变化，获取设定时间段内的支座摩阻力和支座切线刚度。解决了现有技术中采用WEN塑性单元将单元力学公式加入非线性动力方程进行数值计算，存在需要进行逐步积分，计算工作量大，积分步长大时，摩阻力计算结果波动大，以及无法确定切线刚度的问题。
Method and device for determining frictional resistance and tangent rigidity of friction support
一种摩擦支座摩阻力和切线刚度确定方法及装置
YUAN RENAN (author) / WANG ZHEN (author) / WU DONG (author) / ZHANG MINGJIN (author) / QIAN MIAO (author) / ZHANG JINGFENG (author) / CHEN YU (author) / HUO XUEJIN (author) / HAN RUOYU (author) / WANG ZHEYAO (author)
2024-01-30
Patent
Electronic Resource
Chinese
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