【摘要】 本文对大型复杂结构斗轮挖掘机臂架,推导了在地震作用下考虑局部动力效应结构单元的修正公式,研制了相应的计算软件,并对应用于内蒙古自治区元宝山大露天矿的斗轮挖掘机臂架做了局部动力效应实际计算.计算结果表明,在进行大型复杂结构的动力响应分析时,通过考虑局部效应不仅可以使计算模型大大简化,而且可获得更为精确的计算结果.更多还原

【Abstract】 In this paper, the local dynamic effect modification formulation of big bucket-wheel excavator arm support under seismic load is presented. The corresponding computational program is compiled to analyze the local dynamic effect of bucket-wheel excavator arm support of big strip mine in Neimenggu municipality. The results showed that, in dynamic analysis of large-scale complicated structures, the computational model was greatly simplified by considering local dynamic effect. The accuracy of results was enhanced.更多还原