Fatigue Failure Analysis of Cushion on Preloaded Eccentric Structure
Foam rubber cushion is often used to connect complex structures in engineering.In engineering equip-ment,foam rubber cushion is widely used in the preload assembly of ellipsoid structures.In this paper,firstly,the fa-tigue failure research method and material constitutive model analysis of cushion are carried out,and the finite element method of cushion fatigue failure and the constitutive model applicable to foam rubber material are clarified.Secondly,finite element analysis models of ellipsoids with different eccentricities were established to predict the results of the structure under single compression.Finally,the fatigue life of the ellipsoidal cushion structure with dif-ferent eccentricities under different compressions was calculated and analyzed by using fatigue calculation software,and the influence of eccentricity and amplitude on the fatigue life of the cushion was obtained.
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