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. Vantomme Published online: 15 September 2009 DOI: 10.1051/dymat/2009108