A composite material can be defined as a combination of two separate elements which is not caused chemical reaction. Pultruted composites have better aggregation properties at least in one direction compare to each component. According to the ratio of stiffness to density of these products, they could be appropriate superseded for traditional material e.g. aluminum and steel. Pultruted composite beams are economic and accessible. Despite of appropriate property of pultruted composite beams e.g. tolerance tension and compression, absence of permanent deformation cause damage. Reduction of strength in effect of impact is an important weakness of these materials. Impact with low velocity which usually happens due to the material movement or collision of external object, would be a serious threat for the strength of these material after collision. Therefore, studying the behavior of these materials under collision and suggesting a strategy to lessen the effect of collision is unavoidable. In current research, in order to reduce the effect of collision on these materials, using a suitable energy absorber is suggested. The energy absorber which is used in this research is integrated woven textile named Parabeam ® . Sandwich panels which have a core with soft material is appropriate for absorb the energy, but the dissimilarity of facesheet and core material and the inequality of flexural stiffness is the cause of delamination. The facesheet and core in integrated woven textile sandwich panels beneficially connected and the delamination is eliminated. Comparing the residual strength of solitary beam and beams equipped with Parabeam ® exposed to orthogonal impact is investigated. A 3D finite element model is employed to predict the mechanical behavior of integrated woven textile, and then the obtained property was assigned to a homogenous material which was used on the pultrusion beam as a energy absorber. The property of pultrusion composite beam was assigned as an orthotropic material by using VUMAT subroutine. Finally, the results between experiment and FEM model were compared Keywords: Low velocity impact, Energy absorber, Integrated sandwich panel, Parabeam ® , Finite element analysis, Damage, VUMAT
