06-13-2012, 05:58 AM
Experimental study of 'elephant foot bulge' instability of thin-walled metal tanks
Jia, Zi H.; Ketter, Robert L.
NCEER-89-0004, Buffalo, N.Y. : National Center for Earthquake Engineering, Technical report, 1989, 1v (500 N24 89-04)
This study is primarily intended to identify and quantify the 'elephant foot bulge' failure mechanism. Shaking table studies were carried out to investigate the buckling behavior or cylindrical liquid storage tanks under base excitations. Two specially designed aluminum tank models were fabricated, and they were subjected to various seismic loadings. During the tests, the phenomena of 'elephant foot bulge' were clearly observed for both model tanks. Test results in this study indicate that current seismic design criteria do not necessarily safeguard against this type of failure. New design criteria and design alternatives are needed.
PDF|RAR 2.22|2.01 MB
Jia, Zi H.; Ketter, Robert L.
NCEER-89-0004, Buffalo, N.Y. : National Center for Earthquake Engineering, Technical report, 1989, 1v (500 N24 89-04)
This study is primarily intended to identify and quantify the 'elephant foot bulge' failure mechanism. Shaking table studies were carried out to investigate the buckling behavior or cylindrical liquid storage tanks under base excitations. Two specially designed aluminum tank models were fabricated, and they were subjected to various seismic loadings. During the tests, the phenomena of 'elephant foot bulge' were clearly observed for both model tanks. Test results in this study indicate that current seismic design criteria do not necessarily safeguard against this type of failure. New design criteria and design alternatives are needed.
PDF|RAR 2.22|2.01 MB
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