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首页> 外文期刊>International journal of design engineering >Vibration buckling and fracture analysis of a cracked cylindrical shell
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Vibration buckling and fracture analysis of a cracked cylindrical shell

机译：裂纹圆柱壳的振动屈曲和断裂分析

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摘要

Shell structures are susceptible to various types of imperfections and damage such as cracking, corrosion, chemical attack and time-dependent material degradation, which may impair their structural integrity and affect their service life. The effects of cracks are important considerations in the design of cylindrical shell structures as they influence on load carrying capacity and safety. This present work is a finite element investigation on the vibration, buckling and fracture analysis of a cracked cylindrical shell subjected to a time varying rotating speed. The effects of crack length, orientation of crack and length-diameter ratio of the cylindrical shell are investigated under free-vibration and buckling. The fracture parameters like stress intensity factor and J-integral of the cracked shell are also studied considering the influence of crack length and crack orientation. Results reveal that the crack length and crack orientation can affect the vibration, buckling behaviour of the cylindrical shell significantly.
机译：壳体结构容易受到各种缺陷和损坏的影响，例如破裂，腐蚀，化学侵蚀和随时间变化的材料降解，这可能会损害其结构完整性并影响其使用寿命。裂纹的影响是圆柱壳结构设计中的重要考虑因素，因为它们会影响承载能力和安全性。这项工作是对受时间变化的旋转速度的破裂圆柱壳的振动，屈曲和断裂分析的有限元研究。研究了自由振动和屈曲时裂纹长度，裂纹取向和圆柱壳长径比的影响。考虑裂纹长度和裂纹取向的影响，还研究了裂纹壳的应力参数，如应力强度因子和J积分。结果表明，裂纹长度和裂纹取向会显着影响圆柱壳的振动，屈曲行为。

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