Cyclic Bending Failure of Local Sharp-Notched Circular Tubes with Different Diameter-to-Thickness Ratios
Research Area: | Volume 7,Issue 3, May 2018 | Year: | 2018 |
---|---|---|---|
Type of Publication: | Article | Keywords: | Different Diameter to thickness Ratios, Local Sharp notched 6061 T6 Aluminum Alloy Tubes, Cyclic Bending, Number of Cycles Required to Ignite Failure |
Authors: |
|
||
Journal: | IJEIR | Volume: | 7 |
Number: | 3 | Pages: | 166-174 |
Month: | May | ||
ISSN: | 2277-5668 | ||
Abstract: | In this study, the failure of local sharp-notched 6061-T6 aluminum alloy tubes with different diameter-to-thickness ratios submitted to cyclic bending are studied. Different diameter-to-thickness ratios of 16.5, 31.0 and 60.0 were considered. The notch depths of tubes were considered from very small to about 0.6 times the tube’s wall thickness. From the experimental moment-curvature relationship, it demonstrated a steady loop from the beginning of the first bending cycle. From the experimental ovalization-curvature relationship, it exhibited an increasing and ratcheting manner along with the number of bending cycles. The larger notch depth led to more asymmetrical ovalization-curvature relationship and the greater increase of the ovalization. Furthermore, for a certain diameter-to-thickness ratio, five unparallel straight lines corresponding to five different notch depths were found for the controlled curvature-number of cycles required to ignite failure relationship on a log-log scale. Finally, a theoretical model was proposed for simulating the aforementioned relationship. Through comparison with the experimental data, the model can properly simulate the experimental findings |
||
Full text:
![]() |
Indexed By:
Our Journals
IJECCE International Journal of Electronics Communication and Computer Engineering ISSN(Online): 2249 - 071X ISSN (Print) : 2278 – 4209 www.ijecce.org Submissions open |
IJAIR International Journal of Agriculture Innovations and Research ISSN(Online) : 2319 – 1473 www.ijair.org Submissions open |
IJISM International Journal of Innovation in Science and Mathematics ISSN : 2347 – 9051 www.ijism.org Submissions open |
IJEIR International Journal of Engineering Innovations and Research ISSN(Online) : 2277 – 5668 www.ijeir.org Submissions are open. |
IJAIM International Journal of Artificial Intelligence and Mechatronics ISSN(Online) : 2320 – 5121 www.ijaim.org Submissions open |
IJRAS International Journal of Research in Agricultural Sciences ISSN(Online) : 2348 – 3997 www.ijras.org Submissions open |