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钢管铅阻尼器端部构造形式直接影响其破坏形式及力学性能。该文首先对钢管铅阻尼器钢管过渡段构造形式进行改进,提出一种新的构造形式;其次,建立钢管铅阻尼器的有限元模型,提出适合钢管铅阻尼器的金属材料随动强化混合模型参数的计算公式,开发了便于准确、快速建立钢管铅阻尼器有限元模型的参数化建模平台;再次,对比有限元分析与钢管铅阻尼器试验的结果,验证有限元模型的可靠性;最后,采用该有限元模型对改进的构造形式进行分析。研究结果表明:1)钢管铅阻尼器外钢管过渡段采用新的构造形式,能够增加过渡段强度,有效控制阻尼器塑性分布,使得阻尼器的变形和耗能集中在中部,防止阻尼器由于端部连接破坏而使阻尼器过早退出工作;2)采用该文提出的金属材料随动强化混合模型参数计算公式所建立的钢管铅阻尼器有限元模型,计算结果与试验结果吻合良好;3)钢管铅阻尼器参数化建模平台可以准确、快速建立不同构造参数的钢管铅阻尼器有限元模型,为大批量参数分析提供高效、可靠的工具。
The lead pipe damper end structure forms directly affect the destruction form and mechanical properties. In this paper, a new structure is proposed to improve the structure of the transition section of the steel pipe lead damper. Secondly, a finite element model of the lead pipe damper of the steel pipe is established, and a stochastic hybrid model Parameters of the calculation formula, developed a convenient and accurate, rapid establishment of steel pipe lead damper finite element model of the parametric modeling; Thirdly, the finite element analysis of steel and lead damper test results to verify the reliability of the finite element model; Finally , Using the finite element model to analyze the improved structure. The results show that: 1) A new structure is adopted for the transition section of the steel pipe outside the lead pipe damper, which can increase the strength of the transition section and effectively control the plastic distribution of the damper, so that the deformation and energy dissipation of the damper are concentrated in the middle, 2) Adopting the finite element model of the lead-damper steel pipe damper established by the formula for calculating the kinematic strengthening hybrid model parameters of the metal material presented in the paper, the calculated results are in good agreement with the experimental results; 3) The lead-damper parametric modeling platform for steel pipe can accurately and quickly establish the finite element model of lead-damper steel pipe with different structural parameters to provide an efficient and reliable tool for mass parameter analysis.