粘弹性非均匀梁结构中两个纵向裂纹的分析

Q2 Engineering

Engineering Transactions Pub Date : 2020-11-25 DOI:10.24423/ENGTRANS.1214.20201125

V. Ri̇zov

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引用次数: 4

摘要

本文考虑了具有两个纵向裂纹的连续非均匀粘弹性悬臂梁中的时间相关断裂。推导了考虑材料粘弹性行为的应变能释放率的时间相关解析解。采用具有两个弹簧和两个阻尼器的流变模型来研究梁的粘弹性行为。对于流变模型受到应力加载的情况，获得了应力-应变-时间关系，该应力随着时间线性增加到一定水平，然后保持恒定。分析了应变能释放率随时间的变化规律。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Analysis of Two Lengthwise Cracks in a Viscoelastic Inhomogeneous Beam Structure

The present paper considers the time-dependent fracture in a continuously inhomogeneous viscoelastic cantilever beam with two lengthwise cracks. Time-dependent analytical solutions to the strain energy release rate, which take into account the viscoelastic behaviour of the material, are derived. A rheological model with two springs and two dashpots is used for studying the viscoelastic behaviour of the beam. A stress-strain-time relationship is obtained for the case when the rheological model is loaded by stress that increases linearly with time up to a certain level and then it remains constant. The variation of the strain energy release rate with time is analysed.

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来源期刊

Engineering Transactions Engineering-Engineering (all)

CiteScore

1.40

自引率

0.00%

发文量

期刊介绍： Engineering Transactions (formerly Rozprawy Inżynierskie) is a refereed international journal founded in 1952. The journal promotes research and practice in engineering science and provides a forum for interdisciplinary publications combining mechanics with: Material science, Mechatronics, Biomechanics and Biotechnologies, Environmental science, Photonics, Information technologies, Other engineering applications. The journal publishes original papers covering a broad area of research activities including: experimental and hybrid techniques, analytical and numerical approaches. Review articles and special issues are also welcome. Following long tradition, all articles are peer reviewed and our expert referees ensure that the papers accepted for publication comply with high scientific standards. Engineering Transactions is a quarterly journal intended to be interesting and useful for the researchers and practitioners in academic and industrial communities.