Next Article in Journal
Leveraging the Advantages of Additive Manufacturing to Produce Advanced Hybrid Composite Structures for Marine Energy Systems
Next Article in Special Issue
Process Prediction for Compound Screws by Using Virtual Measurement and Recognizable Performance Evaluation
Previous Article in Journal
Index of Body Inflammation for Maxillofacial Surgery Purpose-to Make the Soluble Urokinase-Type Plasminogen Activator Receptor Serum Level Independent on Patient Age
Previous Article in Special Issue
Detecting Underground Geospatial Features for Protection of Rights in 3D Space: Korean Cases
Article

Buckling of Rectangular Composite Pipes under Torsion

1
Department of Mechanical Engineering, Kanagawa University, Rokkakubashi, Kanagawa-ku, Yokohama 221-8686, Japan
2
East Operation Group, Mitsubishi Electric TOKKI Systems Corporation, Kamimachiya, Kamakura 247-0065, Japan
*
Author to whom correspondence should be addressed.
Academic Editor: Wen-Hsiang Hsieh
Appl. Sci. 2021, 11(3), 1342; https://doi.org/10.3390/app11031342
Received: 9 December 2020 / Revised: 24 January 2021 / Accepted: 30 January 2021 / Published: 2 February 2021
(This article belongs to the Special Issue Selected Papers from IMETI 2020)
The numerical buckling load of rectangular composite pipes under torsional load was derived by using the energy method. The authors found no available simple design method or chart for the buckling loads of rectangular composite pipes, which are often used airplanes, spacecraft, and other lightweight structures, through their involvement in a Mars exploration airplane project. Thus, numerical results were obtained for length-to-width ratios (l/b) from 1 to 20, width-to-height ratios (h/b) from 1 to 6, and [0/90] layer ratios (r) from 0 to 1, which means [(0/90)r,(±45)1-r]s. The layups were assumed to be symmetric, and tension-bending, torsion-bending, and tension-shear coupling stiffnesses were ignored. To establish a simple design method, a closed-form polynomial equation for the buckling load factor was derived by minimizing the weighted residuals of the safe and non-safe side errors, which were obtained by comparing the derived numerical results with the polynomial equations. As a result, the errors of the polynomial equation for the buckling load factor were 4.95% for the non-safe side and 12.4% for the safe side. The errors are sufficiently good for preliminary design use and for parametric design studies and optimization. View Full-Text
Keywords: buckling; composite pipes; aircraft design buckling; composite pipes; aircraft design
Show Figures

Figure 1

MDPI and ACS Style

Takano, A.; Mizukami, R.; Kitamura, R. Buckling of Rectangular Composite Pipes under Torsion. Appl. Sci. 2021, 11, 1342. https://doi.org/10.3390/app11031342

AMA Style

Takano A, Mizukami R, Kitamura R. Buckling of Rectangular Composite Pipes under Torsion. Applied Sciences. 2021; 11(3):1342. https://doi.org/10.3390/app11031342

Chicago/Turabian Style

Takano, Atsushi, Ryo Mizukami, and Ryuta Kitamura. 2021. "Buckling of Rectangular Composite Pipes under Torsion" Applied Sciences 11, no. 3: 1342. https://doi.org/10.3390/app11031342

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop