岸边集装箱桥式起重机疲劳寿命预测
作者:乌云图1, 李娜2, 蔡晋辉1 作者单位:1. 中国计量大学计量测试工程学院, 浙江 杭州 310018;
2. 中国特种设备检测研究院, 北京 100029 发布时间:2018-04-28 09:49:13 点击数:264

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关键词:疲劳寿命预测;雨流计数法;岸边集装箱桥式起重机;Goodman等寿命法;P-S-N曲线
摘要:

为确保岸边集装箱桥式起重机能够安全的运行、防止安全事故的发生,对其进行两个月不间断连续监测,并对主梁结构进行疲劳寿命预测分析。将起重机实际的运行数据经过等值压缩、峰谷值提取等处理,再利用雨流计数法对数据结果进行循环数据统计。利用Goodman等寿命法对循环应力进行等寿命转换,消除平均应力的影响。结合P-S-N曲线和Miner法则,对起重机进行疲劳寿命预测。结果显示,在99%的存活率下,岸边集装箱桥式起重机的主梁寿命约为38.85年,所得数据可为起重机的维修与保养提供参考。

The fatigue life prediction of quayside container bridge crane

WU Yuntu1, LI Na2, CAI Jinhu1

1. Institute of Precision Measurement and Control, China Jiliang University, Hangzhou 310018, China;
2. China Special Equipment Inspection and Research Institute, Beijing 100029, China

Abstract: In order to ensure the safe operation and prevent the occurrence of safety accidents of quayside container bridge crane, two-month continuous monitoring, and fatigue life prediction and analysis for main beam structure were carried out. After equivalent compression and peak value extraction for the actual operating data of the crane, cyclic data statistics was carried out for data results in rain-flow count method, and then Goodman equal life method was adopted to carry out equal life transition for cyclic stress and eliminate the influence of average stress. Fatigue life prediction of crane was carried out by combining the P-S-N curve and the Miner rule. The results show that the fatigue life of main beam of the quayside container bridge crane is about 38.85 years under the survival rate of 99%, which can be the reference of maintenance and repair of the crane.

Keywords: fatigue life prediction;rain-flow count method;quayside container bridge crane;Goodman equal life method;P-S-N curve

2018, 44(4): 14-18  收稿日期: 2017-07-23;收到修改稿日期: 2017-09-19

基金项目: 国家高技术研究发展计划(2015AA043702);国家重点基础研究发展计划专项(2016YFF0203302)

作者简介: 乌云图(1993-),男,内蒙古兴安盟人,硕士研究生,专业方向为故障诊断、疲劳分析、工业物联网系统开发。

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