BENDING COLLAPSE ANALYSIS OF TUBULAR MEMBERS WITH CRACK DAMAGE

This paper presents an Idealised Structural Unit for predicting the bending collapse behaviour of tubular members and systems with circumferential through-thickness cracks. Ductile crack growth is taken into account using CTOD and CTOA as fracture parameters which rile the initiation and continuation of the crack growth, respectively. The tangential stiffness matrix of a cracked member before reaching the ultimate bending capacity of a cracked section is evaluated by introducing the elastoplastic compliance due to the presence of the crack into the node of beam elements. The stiffness formulation after the ultimate strength of cracked section is based on the plastic node method. An elasto-perfectly plastic material is assumed and the values of CTOD and CTOA are evaluated based on Sanders' plane-stress solutions. The results are compared with those of the finite element shell analysis and some existing experimental results, and the rationality and effectiveness of the proposed method is demonstrated.

• Supplemental Notes:
  • Soc Naval Arch West Japan Trans, n 82, Aug 1991, p 177 [13 p, 10 ref, 12 fig]
• Authors:
  • Fujikubo, M
  • Zhao, Y
  • Yao, T
• Publication Date: 1991

Language

• Japanese

Subject/Index Terms

• TRT Terms: Bending; Collapse; Cracking; Structural members; Ultimate strength
• Uncontrolled Terms: Crack propagation
• Subject Areas: Bridges and other structures; Marine Transportation;

Filing Info

• Accession Number: 00705001
• Record Type: Publication
• Source Agency: British Maritime Technology
• Files: TRIS
• Created Date: Aug 14 1995 12:00AM