Inclined Single Elasto-Plastic Fiber Pull Out of Elastic Volume with Friction

It is well known that the main disadvantage of concrete is its low tensile strength. It has been proven by many researchers that the overall behaviour of concrete can be improved by the addition of fibers. A wide range of fibers is used for the production of fiber reinforced concrete (steel, plastic, glass, etc.). The positive effect of the fibers is not obvious until the first crack occurs in the concrete. Increasing the applied loads the matrix fracture process is initializing: micro-cracks start to open to grow and to coalescent finally forming one or few macro-cracks. The fibers are bridging the crack