| 起重机焊接箱形梁疲劳可靠度及初始裂纹的蒙特卡罗仿真 |
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| 引用本文： | 徐格宁,范小宁,陆凤仪,杨恒. 起重机焊接箱形梁疲劳可靠度及初始裂纹的蒙特卡罗仿真[J]. 机械工程学报, 2011, 47(20): 41-44. DOI: 10.3901/JME.2011.20.041 |
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| 作者姓名： | 徐格宁 范小宁 陆凤仪 杨恒 |
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| 作者单位： | 太原科技大学机电工程学院 太原030024 |
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| 基金项目： | “十一五”国家科技支撑计划(2006BAK02B04-0102); 山西省自然科学基金(2010011031-5)资助项目 |
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| 摘 要： | 断裂力学已被学术界公认是一种估算焊接结构件疲劳寿命最有效的解决方法,但在该方法的应用过程中,还存在着一些混乱现象,尤其对疲劳寿命影响较大的初始裂纹在现有技术难以检测的情况下,不同学者往往给出不同的假设,造成所评估的疲劳寿命相差很大.针对这些状况,分析并澄清在应用断裂力学理论进行焊接结构件疲劳可靠度估算中,应力幅的正确使...
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| 关 键 词： | 起重机焊接箱形梁 疲劳可靠度 初始裂纹 蒙特卡罗法 |
Monte Carlo Simulation of Fatigue Reliabilities and Initial Cracks for Welded Box Girders of Crane |
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| XU Gening,FAN Xiaoning,LU Fengyi,YANG Heng. Monte Carlo Simulation of Fatigue Reliabilities and Initial Cracks for Welded Box Girders of Crane[J]. Chinese Journal of Mechanical Engineering, 2011, 47(20): 41-44. DOI: 10.3901/JME.2011.20.041 |
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| Authors: | XU Gening FAN Xiaoning LU Fengyi YANG Heng |
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| Affiliation: | XU Gening FAN Xiaoning LU Fengyi YANG Heng(Mechanical & Electronic Engineering College,Taiyuan University of Science and Technology,Taiyuan 030024) |
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| Abstract: | At present,it has been widely accepted that fracture mechanics is the most effective approach to assessing the fatigue life of welded structures.But in the use of this method,there existed some ambiguous phenomena.Especially the initial cracks,which have significant effect on fatigue life,are set different values by different researchers when no crack could be detected under the present technology condition.That made the assessed fatigue life different widely.Focusing on these problems,when fracture mechani... |
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| Keywords: | Welded box girders of crane Fatigue reliabilities Initial cracks Monte Carlo method |
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