CAJ | 학술논문

针对履带起重机大量采用高强度钢，其刚度和抗失稳能力随之降低的问题，研究了起重机臂架稳定性的影响因素。利用有限元软件ANSYS 建立了臂架模型，对其进行静态分析及特征值屈曲分析，以特征值屈曲模态形状作为初始缺陷，对臂架进行非线性屈曲分析。通过对计算结果进行分析，发现风载荷和回转惯性力对臂架的稳定性影响相对较小，偏摆力是导致臂架失稳的主要因素。
침대리대기중궤대량채용고강도강，기강도화항실은능력수지강저적문제，연구료기중궤비가은정성적영향인소。이용유한원연건ANSYS 건립료비가모형，대기진행정태분석급특정치굴곡분석，이특정치굴곡모태형상작위초시결함，대비가진행비선성굴곡분석。통과대계산결과진행분석，발현풍재하화회전관성력대비가적은정성영향상대교소，편파력시도치비가실은적주요인소。
The influential factors were studied on the stability of crane jib for the increase of strength,at the same time stiffness and buckling resistance decrease in view of a large number of adoption of high strength steel in crawler crane.The jib model was established based on the finite element software ANSYS,the static state and the eigenvalue buckling were analyzed and the nonlinear buckling analysis was carried out on the jib on the basis of eigenvalue buckling mode shape as initial defects.It was found that the wind load and horizontal inertial force influence on the stability of the boom was relatively small,while the deflection force was the main factor that causes the unstability of the jib.