编织防扭钢丝绳绳股展开线研究及力学建模

发布时间：2018-05-20 18:23

本文选题：编织防扭钢丝绳 + 四心圆法　；参考：《机械强度》2017年01期

【摘要】：鉴于编织防扭钢丝绳在电网建设工程中应用的普遍性以及目前国内外学者研究较少的现状,在椭圆假设、编织防扭钢丝绳成形研究基础上,借助椭圆的四心圆法,研究编织防扭钢丝绳股空间展开线的形状,获得了绳长与编织角及对应椭圆弧长之间的关系式;考虑钢丝绳的物理特性参数,并分析钢丝绳受载变形情况,推导出对应任意弧段绳股沿股轴向拉力及沿绳轴向力的表达式,进而建立了编织钢丝绳轴向拉力作用下的力学模型,并以四方八股编织防扭钢丝绳为例,推导出在任意横截面内,钢丝绳所承受的拉力和拉应力的关系式。最后通过数值模拟得出,与椭圆曲率大的弧段相对应的绳股局部所受的等效应力较大,为进一步对编织防扭钢丝绳进行力学分析奠定了理论基础。
[Abstract]:In view of the universality of the application of braided twisting wire rope in the power grid construction project and the present situation of less research by domestic and foreign scholars, on the basis of the elliptical hypothesis and the research on the forming of the braided twisting wire rope, the four-center circle method of the ellipse is used. In this paper, the shape of space expansion line of braided torsion resistant steel wire rope is studied, the relationship between rope length, braiding angle and corresponding elliptical arc length is obtained, the physical characteristic parameters of wire rope are considered, and the deformation of wire rope under load is analyzed. The expressions of the axial tensile force along the strands and the axial forces along the rope are derived, and the mechanical model under the axial tension of the braided wire rope is established, and taking the square eight-strands braided anti-torsion wire rope as an example, the mechanical model is established under the action of the axial tensile force of the braided wire rope. The relationship between tensile force and tensile stress of wire rope under arbitrary cross section is derived. By numerical simulation, it is concluded that the equivalent stress of the wire strands corresponding to the arc segment with large elliptic curvature is large, which lays a theoretical foundation for further mechanical analysis of the braided torsion resistant wire ropes.
【作者单位】：济南大学机械工程学院;
【基金】：山东省科技发展计划项目(2014GGX103016)资助~~
【分类号】：TD532

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