Effect of Welding Spot Diameter and Arrangement on Fatigue Life of Corrugated Plate Component

Abstract

In this paper, the effect of the diameter, arrangement and spacing of solder joints on the fatigue performance of corrugated plate component was simulated, and the structure parameters of solder joints were optimized. First, the static strength simulation of corrugated plate component was carried out in Workbench, and then Fatigue numerical simulation was carried out by combining with Fatigue Tool. Finally, the data analysis and processing of the simulation results were carried out to obtain reasonable welding joint structure parameters. Considering fatigue life and cost performance of the corrugated plate component, it is the better welding spot structure parameters that the left and right margin of the first welding spot is 10 mm, 6 in number, and the center of the welding spot is 3.5 mm away from the upper boundary, while the left and right margin of the second welding spot is 108 mm, 5 in number, and the center of the welding spot is 4.5 mm from the upper boundary, and the diameter of the two rows of solder joints is 2 mm and the horizontal spacing between them is 196 mm. Under this parameter, the fatigue life simulation result of corrugated plate component is 1.56e6 times, and the actual fatigue life of physical test is more than 2.0e7 times, meeting the requirements of working condition.

Simulation and Analysis of Welding Spot Failure of PCB Based on ABAQUS

“…(3) The bending moment M is borne by all welds, and the shear stress generated by the bending moment is proportional to the distance y to the combined weld to calculate the cross-sectional mandrel [12][13][14] ;…”

“…Calculation of complex welds 3.3.2.1. Support weld connection a. Shaft moment of inertia method The calculation assumes:(1) Shear force F is only equally absorbed by vertical welds;(2) The weld seam is consistent with the deformation of the component;(3) The bending moment M is borne by all welds, and the shear stress generated by the bending moment is proportional to the distance y to the combined weld to calculate the cross-sectional mandrel[12][13][14] ;The weld shear stresses caused by shear force F and bending moment M are:…”