采用动力测试的双转子卧螺离心机模型修正

周瑾,高天宇,陈怡,席鸿皓

Model updating of dual-rotor decanter centrifuge with dynamic test

Jin ZHOU,Tian-yu GAO,Yi CHEN,Hong-hao XI

表 2 试验模态频率与修正前有限元计算结果对比

Tab.2 Comparison of modal frequencies between test and finite element calculation before updating

分析对象 阶次 ft / Hz fa / Hz Δf/% 内螺旋自由-自由 1 528.6 514.9 2.59 2 1 211.4 1 146.5 5.36 3 1 914.0 2 005.7 4.79 整机自由-自由 1 115.6 105.37 8.85 2 231.6 239.21 3.29 3 347.2 309.85 10.76 整机轴承支撑 1 103.2 90.7 12.10 2 146.1 132.9 9.10 3 290.8 274.3 5.70