含裂纹少片变截面钢板弹簧的刚度特性分析

Analysis of Stiffness Characteristics of Leaf Spring with Few Piece Variable Cross-Section with Cracks

利用SolidWorks和ANSYS软件建立了含裂纹的少片变截面钢板弹簧三维仿真模型,通过分析不同位置、角度、深度的裂纹影响下钢板弹簧的刚度特性,探究了裂纹位置、角度、深度对弹簧刚度的影响规律。结果表明:横向裂纹对钢板弹簧刚度影响显著,裂纹位置越接近板簧根部平直段1/3长度处、裂纹角度越接近90°、裂纹越深,影响程度越大,钢板弹簧刚度越小;纵向裂纹对钢板弹簧刚度的影响轻微,刚度变化很小;一定深度范围内,含裂纹钢板弹簧的刚度较无裂纹钢板弹簧的刚度略大。

A three-dimensional simulation model of leaf spring with few piece variable cross-section with crack is established using SolidWorks and ANSYS.The influence laws of crack location,angle,and depth on the stiffness of few leaf spring are explored by analyzing stiffness characteristics of few leaf spring under different crack locations,angles and depths.The results show that the transverse crack has a significant influence on the stiffness of the leaf spring.The closer the crack location is to the 1/3 length of the straight section at the root of the leaf spring,the closer the crack angle is to 90°and the deeper the crack is,the greater the influence is and the smaller the stiffness is.The longitudinal crack has a slight influence on the stiffness of the leaf spring and the variation of the stiffness is small.The stiffness of the leaf spring with crack is slightly bigger than that of the leaf spring without crack in a certain depth range.