Comparison of wireless testing and simulation of disc separator drum stress
WANG Sen zhe1, ZHANG Yong zheng2, LI Wen jun2, LV Zhuo jian2, LIANG L hua1
(1.School of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310014, China;
2.Zhejiang Qingji Industry Co., Ltd., Hangzhou 311401, China)


Abstract: Aiming at the difficulty of testing the stress of the disc separator drum under running condition, in the disc separator drum test bed, two different structures (single drum and drum assembly) were subjected to wireless dynamic stress testing, and compared with finite element simulation. Using the WiFi wireless communication technology for resistance strain testing experiments, the stress and strain data of inner wall of drum were obtained directly under different positions and different rotating speed, and compared with the results of comparative analysis of JB/T 8051-2008 “centrifuge drum strength calculation norms” and finite element simulation analysis. The results indicate that the calculated results of the finite element method are in good agreement with the experimental data. It finds that the hoop stress in the drum wall is larger than that of the single drum cylinder when the empty drum is rotating, and with the increase of the rotation speed, the difference is bigger; but the stress condition of the single drum is basically consistent with the specification, indicating that the formula in the direct use of the specification will have a certain deviation.

Key words: separator drum; dynamic testing; finite element; electrical measurement