以WD20桅杆式起重机金属结构为分析对象,以Femap With Nastran为有限元分析平台,对其额定吊重的最大吊重幅度的多角度回转工况的强度、刚度和稳定性进行有限元计算,掌握其在回转过程中尾部锚固结构的受力变化,以达到结构优化与提高产品质量的目的。 Taking the metal structure of the WD20 mast crane as the analysis object and Femap With Nastran as the finite element analysis platform, the strength, stiffness and stability of the multi-angle rotary working condition with the maximum hoisting amplitude of the rated hoist were calculated by finite element method. During the slewing process, the stress of anchorage structure in the tail changes, so as to achieve the purpose of structural optimization and product quality improvement.