CAJ | 학술논문

设计了一种新的电动单梁起重机主梁局部连接形式，比较了新结构与原结构在整体强度和刚度方面的变化，建立了不同局部结构形式的主梁有限元模型，分析了局部结构改变对强度的影响，标出了结构最大应力点的位置和数值。有限元分析结果显示，新结构的等效应力水平远低于材料许用应力值，具有进一步实验研究的意义。
설계료일충신적전동단량기중궤주량국부련접형식，비교료신결구여원결구재정체강도화강도방면적변화，건립료불동국부결구형식적주량유한원모형，분석료국부결구개변대강도적영향，표출료결구최대응력점적위치화수치。유한원분석결과현시，신결구적등효응력수평원저우재료허용응력치，구유진일보실험연구적의의。
A new form of local connection of girder of electric single-girder crane was designed. The nominal stress and stiffness of new structure was compared with the original structure. The finite element model of girder with different local structure design was established and the impact of local modification on the structural strength was analyzed. The locations and maximum values of structural stress were marked on Mises stress contour plot. The results of Finite element analysis show that the the Mises equivalent stress values of new structure are much lower than the material allowable stress values and further experimental study should be carried out.