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軋鋼機扭振的實測、電算與優化設計

  • 摘要: 軋鋼機軸系的扭振是現代軋機運行及設計中的重要問題。由于扭振造成的扭矩放大系數有時高達4~6以上,以致造成傳動件的破壞。對此進行了現場實測及計算分析。
    為在設計中予測及降低扭矩放大系數,本文采用電算方法求多質量系統在任意激振力矩作用下的瞬態響應。對三機架橫列式型鋼軋機的計算結果,與實測曲線取得較大程度的一致。還用此方法對大型帶鋼熱連軋機組中的一架粗軋機及兩架精軋機進行了計算。
    提出將扭矩放大系數分解為四個基本因素,說明了每個因素的物理意義及其計算公式。
    采用多維優化設計方法,對降低軋鋼機扭矩放大系數的可能途徑作了分析。

     

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