| 芦旭,王平,王建男,昌继海,张宇航,关振群.含剪力销(锥)螺栓法兰连接结构非线性特性[J].计算力学学报,2015,32(4):503~511 |
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| 含剪力销(锥)螺栓法兰连接结构非线性特性 |
| Nonlinear behavior of bolted flange connections containing shear pin (CONE) |
| 投稿时间：2014-06-06 修订日期：2014-10-04 |
| DOI：10.7511/jslx201504010 |
| 中文关键词: 剪力销(锥) 螺栓法兰连接 简化动力学模型 耦合振动 非线性 |
| 英文关键词:shear pin (cone) bolted flange joint reduced order dynamic models coupling vibration nonlinearity |
| 基金项目:国家自然科学基金(10872040,11272074);国家 科技重大专项(2011ZX02403)资助项目. |
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| 中文摘要: |
| 连接结构广泛应用于航空航天、化工装备和核电站等大型工业装备中.对于轴弯剪组合作用下的连接结构,需要螺栓、法兰和剪力销的联合工作以抵抗外力.本文针对含剪力销(锥)的螺栓法兰连接结构的动力学问题开展研究,将该类结构抽象为三自由度的质量-双线性弹簧系统,建立非线性动力学模型的数学列式,并进行数值求解.重点研究该系统在横向冲击(剪力)下的动力学特性.通过理论分析与数值计算,指出该非线性系统存在3个方向自由度全耦合的振动现象,并阐述该系统自由度的解耦条件;对纵向振动与横向错动的耦合振动频率关系进行讨论并分析其相互联系;研究剪力销倾角对螺栓最大轴向拉力的影响规律并给出关系曲线,指出其最佳设计角度区间. |
| 英文摘要: |
| The connection structure is widely used in aerospace,chemical equipment,nuclear power station and other large industrial equipments.Under the action of axial bending and transverse shearing,it works well to resist external force with the co-operation of the components of the bolts,flanges and shear pins.In this paper,a schematic nonlinear dynamic model with 3 DOFs was developed to study the dynamics mechanism of the bolted flange connections containing shear pins (cones).The corresponding nonlinear dynamic equations were built to describe the proposed model,with special attention on the dynamic characteristics of the model subjected to transversal impact.The fully coupled vibration phenomenon in three directions was found in the nonlinear system with the assistance of mathematical analysis and numerical experiment,in which the decoupling conditions of system's degrees of freedom were given in detail.The coupled frequency between the vertical vibration and transverse vibration were analyzed to give the most appropriate design region by means of building the relation curve between the dip angle of the shear pin and the maximal axial tensile force on the bolts. |
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