TY - GEN
T1 - Frequency analyses of free spanning subsea pipelines with finite element method
AU - Xiao, Zhi Gang
AU - Zhao, Xiao Ling
PY - 2007
Y1 - 2007
N2 - Free spans or suspended spans are normal to subsea pipelines due to the irregularity of seabed and/or the scouring action of sea water. A problem of significance to the free spans of subsea pipeline is that currents or waves flowing across pipelines can shed vortices and induce vibration that may cause fatigue damage to pipelines. Natural frequency is required when solving vibration amplitude and cyclic stresses in the free span. The natural frequency is usually calculated with simplified equations, where factors such as boundary conditions and axial forces are not accurately taken into account. This study is therefore intended to investigate the influence of boundary conditions, axial force, and multiple spans on the natural frequencies of pipeline and give recommendations on frequency calculation.
AB - Free spans or suspended spans are normal to subsea pipelines due to the irregularity of seabed and/or the scouring action of sea water. A problem of significance to the free spans of subsea pipeline is that currents or waves flowing across pipelines can shed vortices and induce vibration that may cause fatigue damage to pipelines. Natural frequency is required when solving vibration amplitude and cyclic stresses in the free span. The natural frequency is usually calculated with simplified equations, where factors such as boundary conditions and axial forces are not accurately taken into account. This study is therefore intended to investigate the influence of boundary conditions, axial force, and multiple spans on the natural frequencies of pipeline and give recommendations on frequency calculation.
UR - http://www.scopus.com/inward/record.url?scp=84863230998&partnerID=8YFLogxK
M3 - Conference article published in proceeding or book
AN - SCOPUS:84863230998
SN - 9789810593711
T3 - 5th International Conference on Advances in Steel Structures, ICASS 2007
SP - 645
EP - 650
BT - 5th International Conference on Advances in Steel Structures, ICASS 2007
T2 - 5th International Conference on Advances in Steel Structures, ICASS 2007
Y2 - 5 December 2007 through 7 December 2007
ER -