NATURAL FREQUENCIES AND COLLAPSE STRENGTH OF RADIOACTIVE WASTE TRANSPORT CASKS

The natural frequencies and collapse strength of radioactive waste transport casks are analysed by means of finite element method. The calculated casks are are those for high, medium and low level waste. The natural frequencies are obtained in two cask positions, vertical and horizontal, and the buckling or collapse strength is analysed under external pressure. MARC is used as a finite element program. Conclusions obtained are: (1) The natural frequencies calculated by the handbook formulae for beams can be considerably higher than those by finite element method in the case of bending mode shapes. (2) The vibration modes of the casks for low or intermediate level waste are mainly the deflection of lid and bottom plates, whose natural frequencies can be estimated by the handbook formulae for circular plate. (3) The collapse strength of casks can be obtained by elastic buckling analysis in the case of casks for low level waste with low rigidity, or by non-linear analysis in the case of casks for high or intermediate level waste with high rigidity. (4) The collapse modes in non-linear analysis are the same as the first modes in elastic buckling analysis.

• Supplemental Notes:
  • Ship Res. Inst. Japan Papers, 25 (1988), p. 1 (Jul.) [10 pp., 2 ref., 3 tab., 21 fig.]
• Authors:
  • Aoki, G
• Publication Date: 1988

Language

• Japanese

Subject/Index Terms

• TRT Terms: Radioactive wastes
• Subject Areas: Marine Transportation;

Filing Info

• Accession Number: 00695251
• Record Type: Publication
• Source Agency: British Maritime Technology
• Files: TRIS
• Created Date: Aug 14 1995 12:00AM