Method for calculating friction coefficient of contact surface of bolted structure
A technology of contact surface and friction coefficient, which is applied to the calculation of the friction coefficient of the contact surface of the bolted structure, and the calculation field of the friction coefficient of the contact surface, which can solve the problem that the friction coefficient of the bolt cannot be measured and other problems
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[0019] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.
[0020] 1) Generally, the friction coefficient of the dry friction sliding surface is considered to be the result of the joint action of the asperity furrow, the asperity occlusion, and the furrow of the wear particles remaining on the surface after the friction pair wears. refer to figure 2 As shown, according to the Florida contact theory, the Florida contact model based on the bolt connection is established.
[0021] 2) Considering the average shear stress of each actual contact point of the bolted contact surface, the total plastic deformation energy is equal to the sum of the plastic deformation energy of a single contact point, and the general formula for the dynamic friction coefficient between friction pairs is obtained:
[0022]
[0023] Where: i is the asperity contact point, i=1, 2,..., N j ;
[0024] P is the total load in the vertic...
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