[1]朱林,贾民平,石光林,等.基于多因素修正的结构件疲劳寿命预估方法[J].东南大学学报(自然科学版),2015,45(3):469-473.[doi:10.3969/j.issn.1001-0505.2015.03.010]
 Zhu Lin,Jia Minping,Shi Guanglin,et al.Estimation approach study of structural fatigue life based on multiple factors correction[J].Journal of Southeast University (Natural Science Edition),2015,45(3):469-473.[doi:10.3969/j.issn.1001-0505.2015.03.010]
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基于多因素修正的结构件疲劳寿命预估方法()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
45
期数:
2015年第3期
页码:
469-473
栏目:
其他
出版日期:
2015-05-20

文章信息/Info

Title:
Estimation approach study of structural fatigue life based on multiple factors correction
作者:
朱林1贾民平1石光林2张菀1
1东南大学机械工程学院, 南京 211189; 2广西科技大学机械工程学院, 柳州 545006
Author(s):
Zhu Lin1 Jia Minping1 Shi Guanglin2 Zhang Wan1
1School of Mechanical Engineering, Southeast University, Nanjing 211189, China
2School of Mechanical Engineering, Guangxi University of Technology, Liuzhou 545006, China
关键词:
结构件 疲劳寿命 多因素 修正因子
Keywords:
structure fatigue life multiple factors correction factor
分类号:
V263.5
DOI:
10.3969/j.issn.1001-0505.2015.03.010
摘要:
针对传统疲劳寿命预估算法精度低且适用性窄的问题,结合工程结构件的实际特点确定了对疲劳寿命估算精度造成影响的主要因素,将影响因素量化为具体的修正因子,并在此基础上提出了一种基于多因素修正的结构件疲劳寿命预估方法.然后应用修正后的算法对实例构件的疲劳寿命进行估算,并将估算结果与应用局部应力-应变法估算的结果及台架疲劳试验结果进行对比.结果表明,修正后的算法能够实现一般大型结构件疲劳寿命的准确估算,是一类预测精度高、实施方便且具有广泛工程应用前景的疲劳寿命估算方法.
Abstract:
To solve the low accuracy and narrow application of traditional estimation approaches, the main factor affecting the estimation accuracy of fatigue life are determined according to practical characteristics of engineering structures. These factors are quantified as the concrete correction coefficients. Then, estimation approach of structure fatigue life based on multiple factors correction is proposed. The fatigue life of an instance is estimated by this corrected estimation approach. The estimation results are compared with those of the local stress-strain method and the fatigue test data. It is shown that this corrected approach can accurately estimate the fatigue life of general large structures. It has high estimation accuracy, convenient implementation and extensive engineering application prospects.

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备注/Memo

备注/Memo:
收稿日期: 2014-11-29.
作者简介: 朱林(1989—),男,博士生;贾民平(联系人),男,博士,教授,博士生导师,mpjia@seu.edu.cn.
基金项目: 国家自然科学基金资助项目(51075070)、高等学校博士学科点专项科研基金资助项目(20130092110003).
引用本文: 朱林,贾民平,石光林,等.基于多因素修正的结构件疲劳寿命预估方法[J].东南大学学报:自然科学版,2015,45(3):469-473. [doi:10.3969/j.issn.1001-0505.2015.03.010]
更新日期/Last Update: 2015-05-20