Theoretical assessment of burst failure of internally pressurized defect-free pipelines with plastic anisotropy

Theoretical assessment of burst failure of internally pressurized defect-free pipelines with plastic anisotropy
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塑性各向异性内压无缺陷管道爆裂失效理论评估

DOI:
10.1007/s13344-013-0037-5
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发表时间:
2013-08
影响因子:
1.6
通讯作者:
Jin Wei-liang
Jin Wei-liang
中科院分区:
工程技术2区
文献类型:
--
作者:
Zhang Yong-qiang;Wang Li-zhong;Jin Wei-liang

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在有限变形理论的框架下,对具有塑性各向异性的无端部开口缺陷管道在内压作用下的爆破失效进行了分析。得到了薄壁管爆破压力的解析解及相应的等效应力和等效应变,该解析解可考虑材料塑性各向异性和应变硬化指数的影响。讨论了塑性各向异性对爆破压力及相应的等效应力和等效应变的影响。结果表明,爆破压力及相应的等效应力和等效应变依赖于材料的塑性各向异性,其依赖程度与材料的应变硬化指数有关。此外,还研究了应变硬化指数对爆破破坏的影响。
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.
DOI: 10.1115/1.3231239
发表时间: 1986-03
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