TY - GEN

T1 - A study of general buckling strength of ring-stiffened cylindrical shells under external pressure and effective breadth of ring-stiffeners

AU - Yoshikawa, Takao

AU - Yoshimura, Kenshi

PY - 2008/12/1

Y1 - 2008/12/1

N2 - Recently, we usually use the numerical method to calculate the buckling strength of plate and shell structures. But at early design stage, we even now use the theoretical or some simplified formula to check the buckling strength. For most of typical plate and shell structures, the precise formulas of buckling strength have been developed. For the general buckling strength of ring-stiffened cylindrical shell under external pressure in elastic range, the several formulas have been also proposed, but the accuracy of those are hardly adequate. In those formulas, the effective breadth of ring-stiffeners is introduced, but the exact value has not been presented. In this paper, the calculation procedure of effective breadth is developed based on mechanical consideration of pre-buckling deformation, and the modified simplified formula of general buckling strength of ring-stiffened cylindrical shells under external pressure in elastic range is proposed. Finely, the accuracy of proposed formula is confirmed by comparison with numerical results.

AB - Recently, we usually use the numerical method to calculate the buckling strength of plate and shell structures. But at early design stage, we even now use the theoretical or some simplified formula to check the buckling strength. For most of typical plate and shell structures, the precise formulas of buckling strength have been developed. For the general buckling strength of ring-stiffened cylindrical shell under external pressure in elastic range, the several formulas have been also proposed, but the accuracy of those are hardly adequate. In those formulas, the effective breadth of ring-stiffeners is introduced, but the exact value has not been presented. In this paper, the calculation procedure of effective breadth is developed based on mechanical consideration of pre-buckling deformation, and the modified simplified formula of general buckling strength of ring-stiffened cylindrical shells under external pressure in elastic range is proposed. Finely, the accuracy of proposed formula is confirmed by comparison with numerical results.

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U2 - 10.1115/OMAE2008-57679

DO - 10.1115/OMAE2008-57679

M3 - Conference contribution

AN - SCOPUS:77957995420

SN - 9780791848197

T3 - Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE

SP - 591

EP - 598

BT - 2008 Proceedings of the 27th International Conference on Offshore Mechanics and Arctic Engineering, OMAE 2008

T2 - 27th International Conference on Offshore Mechanics and Arctic Engineering, OMAE 2008

Y2 - 9 June 2008 through 13 June 2008

ER -