Journal of Northeastern University Natural Science ›› 2020, Vol. 41 ›› Issue (5): 686-692.DOI: 10.12068/j.issn.1005-3026.2020.05.013

• Mechanical Engineering • Previous Articles     Next Articles

Natural Characteristics Analysis of Suspended Thin-Walled Cylindrical Shells with Bolted Connections

MA Hui1,2, FU Qiang1, LI Kun1, FAN Fu-you3   

  1. 1.School of Mechanical Engineering & Automation, Northeastern University, Shenyang 110819, China; 2.Key Laboratory of Vibration and Control of Aero-Propulsion Systems, Ministry of Education, Northeastern University, Shenyang 110819, China; 3. Changsha Electromechanical Product Research and Development Center, China South Industries Group Corporation, Changsha 410100, China.
  • Received:2019-06-05 Revised:2019-06-05 Online:2020-05-15 Published:2020-05-15
  • Contact: MA Hui
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Abstract: Toward the suspended thin-walled cylindrical shell with bolted connections, both beam-shell hybrid and full-solid finite element models were established by using ANSYS software. With the established models, the influence from boundary conditions and bolt preloads at the flange-/hoisting- structure to the system dynamic characteristics was analyzed, and corresponding numerical results were compared with experimental results. The results indicated that the finite element model established can accurately simulate the contact pressure and its distribution at the bolted interface. On the premise of guaranteeing computational accuracy, the beam-shell hybrid model was more efficient than the full-solid model. The bolt preloads at the flange had a significant effect on the fifth to eighth natural frequencies of the system, while that at the hoisting structure had a great effect on the first three natural frequencies of the system.

Key words: bolted connection, suspension, thin-walled cylindrical shell, natural characteristic, preload

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