@ARTICLE{Abdollahzadeh_G._Analiza_2015, author={Abdollahzadeh, G. and Ahmadi, M.}, number={No 2}, journal={Archives of Civil Engineering}, pages={161-178}, howpublished={online}, year={2015}, publisher={WARSAW UNIVERSITY OF TECHNOLOGY FACULTY OF CIVIL ENGINEERING and COMMITTEE FOR CIVIL ENGINEERING POLISH ACADEMY OF SCIENCES}, abstract={In this stud y, we attempt to analyse free nonlinear vibrations of buckling in laminated composite beams. Two new methods are applied to obtain the analytical solution of the nonlinear governing equation of the problem. The effects of different parameters on the ratio of nonlinear to linear natural frequencies of the beams are studied. These methods give us an agreement with numerical results for the whole range of the oscillation amplitude.}, type={Artykuły / Articles}, title={Analiza drgań nieliniowych przed i po wyboczeniu laminowanych belek kompozytowych}, title={Nonlinear vibration analysis of prebuckling and postbuckling in laminated composite beams}, URL={http://journals.pan.pl/Content/84023/mainfile.pdf}, keywords={drgania nieliniowe, belki kompozytowe, metody analityczne, nonlinear vibration, composite beams, analytical methods}, }