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用有限元法对斗杆可回转挖掘机的工作装置进行了分析，并对两种约束处理方案进行了分析，建立了闭口薄壁杆件约束扭转双力矩的简化计算公式。
The working device of the excavator with excavator can be analyzed by the finite element method. Two kinds of constrained treatment schemes are analyzed, and a simplified calculation formula for the constrained torsional double moment of the closed thin-walled member is established.