Theoretical Assessment of Burst Failure of Internally Pressurized Defect-Free Pipelines with Plastic Anisotropy

• Published in: China ocean engineering 2013-08, Vol.27 (4), p.427-436
• Main Authors: Zhang, Yong-qiang, Wang, Li-zhong, Jin, Wei-liang
• Format: Article
• Language: English
• Subjects: Bursting; Coastal Sciences; Engineering; Equivalence; Exponents; Failure; Fluid- and Aerodynamics; Marine; Marine & Freshwater Sciences; Numerical and Computational Physics; Oceanography; Offshore Engineering; Plastic anisotropy; Simulation; Strain; Strain hardening; Stresses; 加压; 塑性各向异性; 应变硬化指数; 无缺陷; 有限变形理论; 突发故障; 管道; 评估
• ISSN: 0890-5487; 2191-8945
• DOI: 10.1007/s13344-013-0037-5

In the framework of finite deformation theory, the burst failure analysis of end-opened defect-free pipes with plastic anisotropy under internal pressure is carried out. The analytical solutions of burst pressure and the corresponding equivalent stress and strain are obtained for thin-walled pipes, which can take into account the effects of material plastic anisotropy and strain hardening exponent. The influences of plastic anisotropy on the burst pressure and the corresponding equivalent stress and strain are discussed. It is shown that the burst pressure and the corresponding equivalent stress and strain are dependent upon the plastic anisotropy of material, and the degree of dependence is related to the strain hardening exponent of material. In addition, the effects of the strain hardening exponent on burst failure are investigated.