| Composite has different mechanical properties and characteristics from its former materials. Composite is commonly used in industry because of those characteristics and properties that cant be owned by only one material. This paperwork will build numerical model in form of laminated composite beam with I profile and strip beam as well as Glass Fiber Reinforced Polymer (GFRP) with finite element method to analyse strength and stiffness of the composite material. That numerical model provided stress and deflection value of the composite model from consentrated force. The validation process is done by comparing numerical study results with teoritical and eksperimental study. The validation process shows that the numerical models that being used are valid. From the composite beam’s strength and stiffness analysis is acquired error values of 1,05-5,25% on deflection and 36,27-38,23% on stress in such way the calculation with inner force analysis and deflection formula cannot be used to orthotropic structured composite beam. On GFRP analysis is gained stress value at the GFRP side of 140 MPa on 934 N, loading that approaching the value result that is 140 MPa on 94,38 kg. |