Ratcheting, collapse, and fatigue are the probable failure modes which can occur under alternate dynamic loading like seismic loading. The objective of this study is to propose a failure mode map for rectangular beams by determining the conditions of occurrence of the ratcheting and collapse failure modes. The paper considers the analogy between thermal ratcheting and dynamic ratcheting. The nonlinear dynamic finite element method was used to analyze a rectangular beam model for different loading conditions. The results were plotted on a nondimensional primary and secondary stress parameter graph similar to the Bree diagram for thermal ratcheting. The similarity between thermal load and dynamic load was observed. The main difference between thermal and dynamic loading is the effect of the frequency of dynamic loading on the occurrence of ratcheting and collapse. Experimental observations of ratcheting have been obtained and are used for comparison to validate the analytical predictions. From the above results, a failure mode map has been proposed which can evaluate the occurrence conditions of ratcheting and collapse under dynamic loadings.
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October 2018
Research-Article
Proposal of Failure Mode Map Under Dynamic Loading—Ratcheting and Collapse
Md Abdullah Al Bari,
Md Abdullah Al Bari
Nuclear Engineering and Management,
School of Engineering,
The University of Tokyo,
7-3-1 Hongo, Bunkyo-ku,
Tokyo 113-8656, Japan
e-mail: md.abdullahbari@gmail.com
School of Engineering,
The University of Tokyo,
7-3-1 Hongo, Bunkyo-ku,
Tokyo 113-8656, Japan
e-mail: md.abdullahbari@gmail.com
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Ryota Sakemi,
Ryota Sakemi
Nuclear Engineering and Management,
School of Engineering,
The University of Tokyo,
7-3-1 Hongo, Bunkyo-ku,
Tokyo 113-8656, Japan
e-mail: ryou.basket@gmail.com
School of Engineering,
The University of Tokyo,
7-3-1 Hongo, Bunkyo-ku,
Tokyo 113-8656, Japan
e-mail: ryou.basket@gmail.com
Search for other works by this author on:
Yamato Katsura,
Yamato Katsura
Nuclear Engineering and Management,
School of Engineering,
The University of Tokyo,
7-3-1 Hongo, Bunkyo-ku,
Tokyo 113-8656, Japan
e-mail: p0cky@hotmail.co.jp
School of Engineering,
The University of Tokyo,
7-3-1 Hongo, Bunkyo-ku,
Tokyo 113-8656, Japan
e-mail: p0cky@hotmail.co.jp
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Naoto Kasahara
Naoto Kasahara
Nuclear Engineering and Management,
School of Engineering,
The University of Tokyo,
7-3-1 Hongo, Bunkyo-ku,
Tokyo 113-8656, Japan
e-mail: kasahara@n.t.u-tokyo.ac.jp
School of Engineering,
The University of Tokyo,
7-3-1 Hongo, Bunkyo-ku,
Tokyo 113-8656, Japan
e-mail: kasahara@n.t.u-tokyo.ac.jp
Search for other works by this author on:
Md Abdullah Al Bari
Nuclear Engineering and Management,
School of Engineering,
The University of Tokyo,
7-3-1 Hongo, Bunkyo-ku,
Tokyo 113-8656, Japan
e-mail: md.abdullahbari@gmail.com
School of Engineering,
The University of Tokyo,
7-3-1 Hongo, Bunkyo-ku,
Tokyo 113-8656, Japan
e-mail: md.abdullahbari@gmail.com
Ryota Sakemi
Nuclear Engineering and Management,
School of Engineering,
The University of Tokyo,
7-3-1 Hongo, Bunkyo-ku,
Tokyo 113-8656, Japan
e-mail: ryou.basket@gmail.com
School of Engineering,
The University of Tokyo,
7-3-1 Hongo, Bunkyo-ku,
Tokyo 113-8656, Japan
e-mail: ryou.basket@gmail.com
Yamato Katsura
Nuclear Engineering and Management,
School of Engineering,
The University of Tokyo,
7-3-1 Hongo, Bunkyo-ku,
Tokyo 113-8656, Japan
e-mail: p0cky@hotmail.co.jp
School of Engineering,
The University of Tokyo,
7-3-1 Hongo, Bunkyo-ku,
Tokyo 113-8656, Japan
e-mail: p0cky@hotmail.co.jp
Naoto Kasahara
Nuclear Engineering and Management,
School of Engineering,
The University of Tokyo,
7-3-1 Hongo, Bunkyo-ku,
Tokyo 113-8656, Japan
e-mail: kasahara@n.t.u-tokyo.ac.jp
School of Engineering,
The University of Tokyo,
7-3-1 Hongo, Bunkyo-ku,
Tokyo 113-8656, Japan
e-mail: kasahara@n.t.u-tokyo.ac.jp
1Corresponding author.
Contributed by the Pressure Vessel and Piping Division of ASME for publication in the JOURNAL OF PRESSURE VESSEL TECHNOLOGY. Manuscript received January 8, 2017; final manuscript received July 7, 2018; published online August 2, 2018. Assoc. Editor: San Iyer.
J. Pressure Vessel Technol. Oct 2018, 140(5): 051202 (8 pages)
Published Online: August 2, 2018
Article history
Received:
January 8, 2017
Revised:
July 7, 2018
Citation
Al Bari, M. A., Sakemi, R., Katsura, Y., and Kasahara, N. (August 2, 2018). "Proposal of Failure Mode Map Under Dynamic Loading—Ratcheting and Collapse." ASME. J. Pressure Vessel Technol. October 2018; 140(5): 051202. https://doi.org/10.1115/1.4040892
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