径向承载对轴磨损影响加速寿命试验
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- 英文论文题名：Accelerated life for radial load to shaft
- 论文作者：苏荔 ; 江超
- 英文论文作者：SU Li ; JIANG Chao ; Research Institute of Physical and Chemical Engineer of Nuclear Industry
- 年：2015
- 作者机构：核工业理化工程研究院;
- 论文关键词：径向承载 ; 加速寿命 ; 轴 ; 可靠度
- 英文论文关键词：radial load ; accelerated life ; shaft ; reliability
- 会议召开时间：2015-09-21
- 会议录名称：中国核科学技术进展报告（第四卷）——中国核学会2015年学术年会论文集第4册（同位素分离分卷）
- 语种：中文
- 分类号：TH133.2
- 学会代码：EGVD
- 会议名称：中国核学会2015年学术年会
- 会议地点：中国四川绵阳
- 主办单位：中国核学会
- 学会名称：中国核学会
- 页数：5
- 文件大小：269k
- 原文格式：O
- 会议级别：全国
摘要
轴是设备的关键部件之一,在高速旋转过程中,其表面易发生磨损。磨损是导致机械产品丧失其功能的主要失效因素之一,因此,设备要求轴必须具有足够的可靠性,满足长寿命。由振动产生的径向承载是引起设备中轴发生严重磨损的主要因素。由于轴结构的特殊性,其磨损进程较为缓慢,短时间内无法考核出轴的磨损寿命。开展径向承载对轴磨损影响加速寿命试验,根据试验结果利用统计方法能够实现在较短时间内对轴抗磨损可靠度的评估。通过进行径向承载对轴磨损失效机理研究,确保了磨损失效机理不会发生改变,在此基础上,制定出轴磨损加速寿命试验方案,试验以逆幂律模型作为加速模型,确定出4个应力水平和各应力水平下的试验样本数及磨损失效判据。利用轴磨损加速寿命试验装置进行了为期2年的径向承载对轴磨损影响加速寿命试验,其中在最高应力水平下累计有2个轴磨损失效,另外3个应力水平下未出现轴失效。对试验数据采用指数分布下的加速因子Bayes评估方法对可靠度进行了计算,点估计和90%置信下限均满足总体的可靠度设计要求。
Shaft is an importmant part of equipment,it connects rotary assembly and immobile assembly.Its reliability is importmant for equipment.When shaft circumrotates rapidly in equipment,its surface is easy abrasion.Abrasion is an importmant factor to conduce machine comedown function.So equipment demands shaft must enough reliability.Radial load is primary factor to conduce shaft occur bad abrasion.Because the configuration of shaft is especial,abrasion is slow,it is difficult to estimate the life of shaft.Accelerated life for radial load to shaft can estimate reliability of shaft in shortly time.Research disabled mechanism,insure disabled mechanism unable change.On this basis,constitute project for accelerated life to test.Antipower is the accelerated model.This test processes in tester of abrasion.There are four stree levels.Through nearly 2 years test,there were 3 shafts failure in the highest stress level,no failure in other 3 stress levels.Calculate the reliability,the result indicates the shaft satisfies the demand of collectivity.
Shaft is an importmant part of equipment,it connects rotary assembly and immobile assembly.Its reliability is importmant for equipment.When shaft circumrotates rapidly in equipment,its surface is easy abrasion.Abrasion is an importmant factor to conduce machine comedown function.So equipment demands shaft must enough reliability.Radial load is primary factor to conduce shaft occur bad abrasion.Because the configuration of shaft is especial,abrasion is slow,it is difficult to estimate the life of shaft.Accelerated life for radial load to shaft can estimate reliability of shaft in shortly time.Research disabled mechanism,insure disabled mechanism unable change.On this basis,constitute project for accelerated life to test.Antipower is the accelerated model.This test processes in tester of abrasion.There are four stree levels.Through nearly 2 years test,there were 3 shafts failure in the highest stress level,no failure in other 3 stress levels.Calculate the reliability,the result indicates the shaft satisfies the demand of collectivity.
引文
[1]茆诗松,王玲玲.加速寿命试验[M].北京:科学出版社,1997:4.
[2]张嗣伟.基础摩擦学[M].北京:石油大学出版社,2001:228.
[3]刘惟信.机械可靠性设计[M].北京:清华大学出版社,2002:346.
[2]张嗣伟.基础摩擦学[M].北京:石油大学出版社,2001:228.
[3]刘惟信.机械可靠性设计[M].北京:清华大学出版社,2002:346.