Method for analyzing fatigue life of launching slide rail structure

• Main Authors: GUO ZIMING, WANG JIAYING, HONG HAIMING
• Format: Patent
• Language: Chinese; English
• Published: 06.06.2023
• Subjects: CALCULATING; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; PHYSICS

The invention belongs to the field of fatigue life analysis, and particularly relates to a launching slide rail structure fatigue life analysis method, which comprises the following steps: S1, carrying out finite element modeling on a launching slide rail to obtain a finite element model; s2, applying a unit load to the finite element model, and extracting the stress of the unit load; s3, acquiring a stress spectrum based on the load spectrum of the transmitting slide rail and the stress of the unit load; s4, calculating the fatigue life based on the stress spectrum; through an overall local method, a concerned part and a common force transmission part in a complex integrated piece are distinguished, and the availability of the number of model grids ensures the calculation efficiency of a single model; an original contact nonlinear problem is converted into a quasi-linear problem in a pressure-bearing beam form, so that the convergence of finite element analysis of a complex mechanism is ensured; a unit load