This paper presents a method to analyze the fatigue damage growth and to estimate the damage of the hammer-foundation system due to repeated impact based on the concept of damage mechanics.
用损伤力学的概念提出了一种研究由锻锤锻打引起锻锤基础系统的疲劳损伤增长和疲劳寿命估计的方法。
In the last part of this paragraph, a calculation model for forging hammer foundation vibration system with dual-freedom is presented.
并从实际出发，考虑砧下垫层的弹性作用及垫层和土壤的阻尼作用，建立了锻锤振动系统的双自由度有阻尼振动力学模型。
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