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| Dynamic balance method without trial weight based on finite element model of dynamic balancer |
| College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, Jiangsu 210016, China |
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Abstract To solve the poor efficiency of influence coefficient method in two-plane balancing for a rigid rotor caused by turning on and off many times,
the dynamic balance method without trial weight of rigid rotor with soft bearing was investigated based on finite element model. The unbalance response test of dynamic balancer was conducted to obtain the initial unbalance signals of two rotor ends. The finite e-lement model of dynamic balancer was established by Nastran software. In the proposed model, two initial weights were added onto the two balancing planes to determine the unbalance signals. According to the two-plane balancing principle based on influence coefficient method for the rigid rotor, the influence coefficient of adding two initial weights on two testing points was calculated by Matlab to obtain rotor unba-lance. The results show that the balance weight of rigid rotor in dynamic balancer can be determined by the influence coefficient method combined with the finite element model, and the dynamic balance can be realized in one turning on.
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Received: 28 April 2012
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2013, Vol. 34 
