The static and dynamic behavior of composite beams is investigated by using finite elements based on the large deflection beam theory. The structural dynamic model has been developed without using any ordering scheme and can be applied to the problem of large deflection. The sectional elastic constants have been determined from the refined cross-sectional finite element method. The effects of fiber orientation and stacking sequence on the static deformation have been investigated for the composite box beams and strip beams. Also, the effects of fiber angles and rotating frequency on the vibration characteristics are investigated for the composite beams. Numerical results are compared with the previously published experimental and numerical results. The present results are proved to be very accurate.
