Numerical axial impact study of pultruded circular and square composite tubes S. Palanivelu, W. Van Paepegem, J. Degrieck, D. Kakogiannis, J. Van Ackeren, D. Van Hemelrijck, J. Wastiels, K. De Wolf and J. VantommeDYMAT - International Conference on the Mechanical and Physical Behaviour of Materials under Dynamic Loading, 1 (2009) 771-777DOI: https://doi.org/10.1051/dymat/2009108