金属广泛地用于生产生活中,所以金属的疲劳也渐渐被人们关注。采用有限元软件(Fatigue)对金属材料在不同轴向载荷条件下进行疲劳性能模拟并进行了分析,分析表明,交变应力的应力幅值一定时,疲劳寿命随着平均应力的增大而减小,且拉应力更容易产生疲劳破坏;在交变载荷平均应力一定的情况下,随着应力幅值的增加,疲劳寿命逐渐减小。 Metals are widely used in the production of life, so the metal fatigue is gradually getting people’s attention. The fatigue behavior of metal materials under different axial loads was simulated and analyzed by finite element software (Fatigue). The analysis shows that the fatigue life decreases with the increase of average stress for a given stress amplitude of alternating stress Small, and the tensile stress is more likely to cause fatigue failure; under the condition of the average load of alternating load, the fatigue life decreases with the increase of the stress amplitude.