编织纹路对自润滑关节轴承接触应力的影响

Effect of Weaving Angle on Contact Stress of Self-Lubrication Spherical Plain Bearing

应用有限元的层合板理论模拟关节轴承编织衬垫,讨论了不同编织角度下衬垫的接触应力和变形。结果表明,由于应力集中,接触应力最大值出现在接触部位的两端面;因内圈的阻碍作用,衬垫位移与接触应力成反比关系;在相同载荷下,45°纹路编织衬垫变形量比90°纹路的变形量大,更能缓解应力集中,使整体接触应力分布更均匀。

The woven liner for the spherical plain bearing is simulated by lamination theory of finite element,and the contact stress and deformation of the liner are discussed under different weaving angles.The results show that the maxi-mum contact stress appear at the two end face of contact area due to stress concentration.The displacement of the liner is inversely proportional to contact stress due to obstacle of the inner ring.The deformation of liner with weaving angle 45°is greater than that of liner with weaving angle 90°under the same load,and the former is able to reduce stress con-centration more effectively and make the distribution of contact stress more uniform.