A finite element method for calculating the applied top tension and static configurations of extensible marine riser with specified total arc-length

Conference proceedings article

ผู้เขียน/บรรณาธิการ

กลุ่มสาขาการวิจัยเชิงกลยุทธ์

ไม่พบข้อมูลที่เกี่ยวข้อง

รายละเอียดสำหรับงานพิมพ์

รายชื่อผู้แต่ง: Athisakul C., Phanyasahachart T., Chatanin W., Chucheepsakul S.

ปีที่เผยแพร่ (ค.ศ.): 2010

Volume number: 2

หน้าแรก: 81

หน้าสุดท้าย: 87

จำนวนหน้า: 7

ISBN: 9781880653777

นอก: 1098-6189

eISSN: 1098-6189

URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-77956327725&partnerID=40&md5=215c7bbfa8bc01912c4a4d32433a07aa

ภาษา: English-Great Britain (EN-GB)

บทคัดย่อ

A variational formulation of an extensible marine riser is formulated based on the work-energy principle. The total unstretched arc-length of marine riser is specified while the top tension is not yet exactly known at the equilibrium position. A Lagrange multiplier is introduced in order to impose the constraint condition, which is the specified total arc-length of the riser. The system unknowns are composed of the nodal degrees of freedom and the Lagrange multiplier. The system of nonlinear finite element equations is derived based on the finite element procedure. The numerical solutions of the nonlinear system are obtained by the iterative method. The results show that the Lagrange multiplier is identified as the value of top tension adjusting the specified top tension in order to maintain the marine riser in equilibrium condition. Copyright ฉ 2010 by The International Society of Offshore and Polar Engineers (ISOPE).

คำสำคัญ

Applied top tension, Constraint condition, Extensible marine riser, Lagrange multipliers, Static configurations