偏心拉压杆的载荷动态响应计算

发布时间：2018-03-22 07:36

本文选题：杆　切入点：轴向交变载荷　出处：《机械强度》2016年06期 　论文类型：期刊论文

【摘要】：拉压结构杆在结构工程中广泛存在,是重要的承载元件。但因各种误差的存在拉压杆常处于偏心拉压受载状态中,研究其动态响应是保证其正确设计的理论基础。针对等截面直杆承受端部轴向偏心谐和轴向载荷作用时的动态响应问题进行了研究,利用小变形假设和线性叠加原理将问题分解为两个子问题,一个是轴向拉压问题,一个是弯曲问题。给出了细长杆件轴向位移和平面弯曲挠度随不同扰动频率的变化规律,为进一步的动态应力计算奠定了基础,研究思路与应用分离变量法和傅立叶积分变换技术,对于研究杆件承受任意偏心轴向载荷和沿轴向分布荷载的动态响应问题具有重要指导意义。
[Abstract]:The strut of tension and compression structure widely exists in structural engineering and is an important bearing element. However, due to the existence of various errors, the strut is often in the state of eccentricity tension and compression. The research on the dynamic response is the theoretical basis to ensure the correct design. The dynamic response of the straight rod with equal cross section under the action of the eccentric axial harmonic and axial load at the end of the bar is studied. By using the assumption of small deformation and the principle of linear superposition, the problem is decomposed into two sub-problems, one is the axial tension and compression problem, the other is the bending problem. It lays a foundation for further dynamic stress calculation, and applies the method of separating variables and Fourier integral transform technique. It is of great significance to study the dynamic response of bars subjected to arbitrary eccentric axial loads and axial distributed loads.
【作者单位】：烟台汽车工程职业学院机电工程系;
【基金】：山东省科技攻关项目(2012G0030011)资助~~
【分类号】：O302

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