造船门式起重机结构腐蚀应力分析

Analysis of structural corrosion stress of shipbuilding gantry crane

由于造船门式起重机特殊的工作环境,起重机主体结构会受到沿海空气中盐粒、盐雾和海风等的侵蚀,在其表面容易发生腐蚀现象并会影响其整体结构强度,故有必要对腐蚀状态下的门式起重机主体受力情况进行研究。文中利用有限元分析技术对门式起重机主要腐蚀区域建立有限元仿真模型来获取随腐蚀尺寸变化的应力情况,分析了各种腐蚀情况对其结构应力和寿命的影响规律。

Because of the special working environment, the main structure of shipbuilding gantry crane will be eroded by salt grains, salt fog and sea breeze in the coastal air, and the surface is prone to corrosion, which will affect its overall structural strength. Therefore, it is necessary to study the main force of gantry crane in corrosion state. Through finite element analysis,a finite element simulation model is established for the main corrosion area of gantry crane, so as to obtain the stress changing with the corrosion size, and the influence law of various corrosion conditions on its structural stress and life is analyzed.