TY - JOUR
T1 - Investigation of composite box beam dynamics using a higher-order theory
AU - McCarthy, Thomas R.
AU - Chattopadhyay, Aditi
N1 - Funding Information:
The authors would like to acknowledges upport of this work through a grant from the NASA Ames ResearchC enter,G rant Number NAG2-771, Technical Monitor Dr Sesi Kottapalli.
PY - 1998/3
Y1 - 1998/3
N2 - A higher-order composite box beam theory is developed to model beams with arbitrary wall thicknesses. The theory, which is based on a refined displacement field, approximates the three-dimensional elasticity solution so that the beam cross-sectional properties are not reduced to one-dimensional beam parameters. Both inplane and out-of-plane warping are included automatically in the formulation. The model can accurately capture the tranverse shear stresses through the thickness of each wall while satisfying stress-free boundary conditions on the inner and outer surfaces of the beam. Numerical results are presented for beams with varying wall thicknesses and aspect ratios. The static results are correlated with available experimental data and show excellent agreement. Dynamic results presented show the importance of including inplane and out-of-plane warping deformations in the formulation.
AB - A higher-order composite box beam theory is developed to model beams with arbitrary wall thicknesses. The theory, which is based on a refined displacement field, approximates the three-dimensional elasticity solution so that the beam cross-sectional properties are not reduced to one-dimensional beam parameters. Both inplane and out-of-plane warping are included automatically in the formulation. The model can accurately capture the tranverse shear stresses through the thickness of each wall while satisfying stress-free boundary conditions on the inner and outer surfaces of the beam. Numerical results are presented for beams with varying wall thicknesses and aspect ratios. The static results are correlated with available experimental data and show excellent agreement. Dynamic results presented show the importance of including inplane and out-of-plane warping deformations in the formulation.
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U2 - 10.1016/S0263-8223(98)00041-5
DO - 10.1016/S0263-8223(98)00041-5
M3 - Article
AN - SCOPUS:0032018721
SN - 0263-8223
VL - 41
SP - 273
EP - 284
JO - Composite Structures
JF - Composite Structures
IS - 3-4
ER -