A Stability Analysis of Risers Subjected to Dynamic Compression Coupled With Twisting

[+] Author and Article Information
Roberto Ramos, Celso Pupo Pesce

Department of Mechanical Engineering, Escola Politécnica, University of São Paulo, Av. Prof. Mello Moraes, 2231, Cidade Universitária, São Paulo, SP, 05508-900, Brazil

J. Offshore Mech. Arct. Eng 125(3), 183-189 (Jul 11, 2003) (7 pages) doi:10.1115/1.1576819 History: Received September 01, 2001; Revised October 01, 2002; Online July 11, 2003
Copyright © 2003 by ASME
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Grahic Jump Location
Curves p×log(χ.l) for three different periods (κ̃t=0)
Grahic Jump Location
Curves p×log(χ.l) for different values of κ̃tl
Grahic Jump Location
“Buckling Mode” for κ̃tl=0.0 (no twisting) and χ.l=0.6055 (taking a SCR as given in Table 1, and choosing Period=8s, such that l=60.55 m, we obtain p=2.9836 and Pcr=221.5 kN)
Grahic Jump Location
“Buckling Mode” for κ̃tl=0.0605 and χ.l=0.6055 (taking a SCR as given in Table 1, and choosing Period=8s, such that l=60.55 m, we obtain p=1.99995 and Pcr=99.5 kN)



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