海上在役箱体式吊机现场应力测试及强度校核

发布时间：2018-01-11 07:04

本文关键词：海上在役箱体式吊机现场应力测试及强度校核　出处：《机械强度》2016年03期 　论文类型：期刊论文

【摘要】：在长期服役过程中,海洋平台吊机处于十分恶劣的环境,服役吊机结构容易受到由老龄化引起的功能退化,如腐蚀损耗、疲劳裂纹或局部凹陷等,影响其安全使用。根据现场实际测绘的吊机数据,应用有限元软件Ansys对其建立有限元模型。得到了吊机的应力分布云图,指出了其应力较大部位,对这些区域进行了现场应力测试。并将有限元的计算结果与测试结果进行了比较,除测点1 941外,其余测点相差在14%以内。最危险区域应力值为247.96 MPa小于吊机材料的许用应力,满足强度要求。分析吊机关键部位应力变化与起升角度β的关系,当起吊重物接近最大工作载荷时,建议选取在β15°的情况下工作。
[Abstract]:In the long course of service, the offshore crane in a very harsh environment, the crane structure is susceptible to aging caused by the degradation of the function of service, such as corrosion loss, fatigue crack or local depression, affect its safe use. According to the actual survey data of crane, using finite element software Ansys to establish the finite the crane element model. The stress distribution, points out the stress of the site, the site of stress testing in these areas. And the finite element calculation result was compared with the test results, in addition to 1941 points, the remaining points are less than 14%. The most dangerous stress area the value is 247.96 MPa less than the crane permissible stress, meet the strength requirements. Analysis of the relationship between the stress change and the lifting angle of key parts of the crane, when lifting heavy objects close to the maximum working load, recommended in beta 15 degrees case Work.

【作者单位】：北京化工大学机电工程学院;中海油能源发展股份有限公司油田建设工程分公司;
【分类号】：TH21
【正文快照】： *20140916收到初稿,20141017收到修改稿。(2.中海油能源发展股份有限公司油田建设工程分公司,天津300452)ZHOU Hong YAN Ting Jun ZHANG Gang(1.College of Mechanical and Electronic Engineering,Beijing University ofChemical Technology,Beijing 100029,China)(2.Oilfiel

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