The purpose is to work out simulation for large scale objects made of glass/carbon fiber and polymer composites. Simulation of large scale objects (for example, road safety barriers) is done to predict material response and it allows economize as the experimental verification of material mechanical properties is mostly very expensive. In this research validation between simulation and experimental results of drop test was done. In simulation model experimentally determined material data of unsaturated polyester and glass fibre composite are used. The agreement between experimental and simulation data was quite good. Mainly, the absorbed energy results are lower than experimentally determined. Difference is about 15%. For visual examination non-destructive ultrasonic imaging system was used. The area of rupture and delamination was compared between experimental and simulation data. The rupture region in experimental specimens is more uniform in in-plane direction than calculations of simulation LS-DYNA program show.