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介绍了疲劳寿命估计方法在汽车设计中的应用，包括传统试验方法、有限元法和动态应变场的模态分析方法。以及国内外疲劳寿命估计方法在汽车设计中应用的最新发展情况和未来发展趋势
The application of fatigue life estimation method in automobile design is introduced, including traditional test methods, finite element method and modal analysis of dynamic strain field. As well as the latest development of the application of fatigue life estimation methods in automobile design in the world and its future development trend