【摘要】 本文采用 Ｉ Ｔ Ｄ 法识别大型露天煤矿斗轮挖掘机斗臂的模态参数，分析斗轮臂的动态特性，从而为结构设计提供参考或改进建议。并为时域识别方法应用于大型复杂结构的模态参数识别，奠定了一定的基础。更多还原

【Abstract】 in the paper, Ibrahim Time Domain method is used to identify the modal parameters of the arm of wheeled digger in coal mine under open sky. The reference and advanced suggestion are provided for the structure design by analyzing the dynamic characteristics of the arm. The research is fundamental to modal parameter identification of equipment with large scale and complicated structures by using time domain method.更多还原