Experimental investigations on the softening and ratcheting behaviors of steel cylindrical shell under cyclic axial loading

Shariati, M.; Hatami, H.; Damghani Nouri, M.

doi:10.22061/jcarme.2013.49

Document Type : Research Paper

Authors

¹ Professor of Mechanical Engineering Faculty, Shahrood University of Technology, Shahrood, Semnan, Iran

² Ph. D. Student of Mechanical Engineering Faculty, Semnan University, Semnan, Iran

³ Assistant Professor of Mechanical Engineering Faculty, Semnan University, Semnan, Iran

https://doi.org/10.22061/jcarme.2013.49

Abstract

In this research, softening and ratcheting behaviors of Ck20 alloy steel cylindrical shells were studied under displacement-control and force-control cyclic axial loading and the behavior of hysteresis curves of specimens was also investigated. Experimental tests were performed by a servo-hydraulic INSTRON 8802 machine. The mechanical properties of specimens were determined according to ASTM E8 standard. Under force-control loading with non-zero mean force, ratcheting behavior occurred on cylindrical shell and plastic strain accumulation continued up to the collapse point of cylindrical shell. The rate of ratcheting strain became higher using the higher force amplitude. Softening behavior was observed under displacement control loading and, due to the occurred buckling in compression zone, this behavior became more extreme. The behavior of hysteresis curves of this alloy was not symmetrical under tensile and compressive loads. Moreover, the influence of loading history was studied on the behavior of hysteresis curves of the specimens under various types of loadings.

Keywords

20.1001.1.22287922.2013.2.2.2.7

Main Subjects

Vibration

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Journal of Computational & Applied Research in Mechanical Engineering (JCARME)

Experimental investigations on the softening and ratcheting behaviors of steel cylindrical shell under cyclic axial loading

References

References

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Volume 2, Issue 2 - Serial Number 2
June 2013
Pages 11-22

Experimental investigations on the softening and ratcheting behaviors of steel cylindrical shell under cyclic axial loading

References

References

Send comment about this article

Volume 2, Issue 2 - Serial Number 2June 2013Pages 11-22

Volume 2, Issue 2 - Serial Number 2
June 2013
Pages 11-22