Numerical simulation for anti-shock characteristic of a marine gearbox system

Shui Guang Tong, Chao Wei, Zhong Xiu Fei, Xue Mei Lin

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

The shock-resistant analysis method of a large marine gearbox system was studied. The equivalent static stresses under normal operation condition of the box and the gears were computed using statics and the nonlinear contact finite element method, the stress components were extracted from the result files of NX. Nastran. A coupled finite element model of box-bearing-shaft-gear was established. Then, the dynamic stresses generated by underwater explosion were computed using DDAM (dynamic design analysis method), the static and dynamic stress components of the corresponding elements were re-synthesized with Von-Mises criterion. The dimensionless residue coefficient of strength was introduced to assess the shock-resistant performance of the gearbox. To simulate underwater explosion environment, shock spectrum was matched to the form of assembled dumped sinusoids. The study results provided a theoretical basis for anti-shock performance assessment and shock isolation design of a marine gearbox.

Original languageEnglish
Pages (from-to)79-85
Number of pages7
JournalZhendong yu Chongji/Journal of Vibration and Shock
Volume31
Issue number12
Publication statusPublished - 28 Jun 2012

Keywords

  • DDAM
  • Dumped sinusoids
  • Gearbox
  • Shock-resistant performance
  • Transient response

ASJC Scopus subject areas

  • Mechanics of Materials
  • Acoustics and Ultrasonics
  • Mechanical Engineering

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