A theoretical model based on Hill’s general method is developed in the present study to calculate the flow stress in a cylindrical specimen under axial compression in the presence of friction at the die-specimen interface. Unlike most of the published methods which studied the incipient barreling only, the proposed theoretical model takes the barreled shape of the deforming specimen into account. In order to construct the stress-strain curve, the mean effective strain of the barreled specimen was also calculated on the basis of an assumed velocity field. As the present study shows, the proposed theoretical model provides good results, both in magnitude and in trend, for the prediction of flow stresses in the barreled specimen during the compression test. [S0094-4289(00)00602-2]
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April 2000
Technical Papers
On the Nonuniform Deformation of the Cylinder Compression Test
Fuh-Kuo Chen, Professor,
Fuh-Kuo Chen, Professor
Department of Mechanical Engineering, National Taiwan University, Taipei, Taiwan
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Cheng-Jun Chen, Graduate Student
Cheng-Jun Chen, Graduate Student
Department of Mechanical Engineering, National Taiwan University, Taipei, Taiwan
Search for other works by this author on:
Fuh-Kuo Chen, Professor
Department of Mechanical Engineering, National Taiwan University, Taipei, Taiwan
Cheng-Jun Chen, Graduate Student
Department of Mechanical Engineering, National Taiwan University, Taipei, Taiwan
Contributed by the Materials Division for publication in the JOURNAL OF ENGINEERING MATERIALS AND TECHNOLOGY. Manuscript received by the Materials Division October 6, 1998; revised manuscript received February 13, 1999. Associate Technical Editor: G. Ravichandran.
J. Eng. Mater. Technol. Apr 2000, 122(2): 192-197 (6 pages)
Published Online: February 13, 1999
Article history
Received:
October 6, 1998
Revised:
February 13, 1999
Citation
Chen, F., and Chen, C. (February 13, 1999). "On the Nonuniform Deformation of the Cylinder Compression Test ." ASME. J. Eng. Mater. Technol. April 2000; 122(2): 192–197. https://doi.org/10.1115/1.482786
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