Box beams are widely used in weight reduction structures such as aircraft wings. The use of composite box beams further reduces the weight factor for such structures with the same deflection and stress as that of isotropic box beams. The difference in the behavior of composite box beams with different fiber orientation, number of plies, and number of stringers also provides a wide range of designing parameters to achieve the required performance for a given problem. A bending analysis has been carried out for the study of deflections and stresses for box beams of different material (isotropic and laminated composites), size, and number of stringers subjected to different kinds of loading conditions. A finite element model has been developed based on the strain energy principle, and the results are compared with an available commercial code “COSMOS/M.” Experiments using aluminum and scotchply composite laminates were conducted to verify the results. An optimal design for size and number of stiffeners for a given loading condition has been achieved. Investigations have also been carried out to find the effect of transverse shear on the span-wise normal stress.
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January 1994
Research Papers
Bending Analysis of Laminated Composite Box Beams Available to Purchase
A. K. Tripathy,
A. K. Tripathy
Department of Mechanical Engineering, Louisiana State University, Baton Rouge, LA 70803
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H. J. Patel,
H. J. Patel
Department of Mechanical Engineering, Louisiana State University, Baton Rouge, LA 70803
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S. S. Pang
S. S. Pang
Department of Mechanical Engineering, Louisiana State University, Baton Rouge, LA 70803
Search for other works by this author on:
A. K. Tripathy
Department of Mechanical Engineering, Louisiana State University, Baton Rouge, LA 70803
H. J. Patel
Department of Mechanical Engineering, Louisiana State University, Baton Rouge, LA 70803
S. S. Pang
Department of Mechanical Engineering, Louisiana State University, Baton Rouge, LA 70803
J. Eng. Mater. Technol. Jan 1994, 116(1): 121-129 (9 pages)
Published Online: January 1, 1994
Article history
Received:
January 10, 1993
Revised:
March 17, 1993
Online:
April 29, 2008
Citation
Tripathy, A. K., Patel, H. J., and Pang, S. S. (January 1, 1994). "Bending Analysis of Laminated Composite Box Beams." ASME. J. Eng. Mater. Technol. January 1994; 116(1): 121–129. https://doi.org/10.1115/1.2904247
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