零件的疲劳强度分析计算

Fatigue Intensity Calculation and Analysis of Mechanical Parts

根据设计的支架在耐久振动试验中出现的零件破坏情况,对支架的破坏原因进行了深入地分析和研究工作,其主要承力件静强度的安全系数满足要求,说明这一破坏现象属于疲劳破坏,按照疲劳破坏的理论和具体的支架受力模型,从理论计算入手,对支架进行了疲劳载荷分析计算,依据疲劳破坏理论和计算的结论,对支架中的主要承力件,采取了相关的设计和工艺技术措施,通过耐久振动试验和实际使用证明这些技术措施合理可靠,解决了支架疲劳破坏的问题,使支架满足了环境使用要求.

The mechanical parts of the brackets are destroyed in oscillation experimentation, the reasons of destructions were analyzed and researched, the safety factors of the static strength of their supporting parts meet the requirements, which indicates these destructions are fatigue destructions. Based on the fatigue destroying theory and bracket models, from the beginning of the theoretical calculation the fatigue loads were analyzed. Depending on the fatigue destroying theory and the conclusions of the calculation, the correlative designs and technical measures were taken to the main supporting parts. The oscillation experimentation and actual application have proved these technical measures are reasonable and reliable, the problems of the bracket fatigue are solved and the brackets could meet the requirements of the environment.