Numerical Analysis of Mode I Fracture Toughness for Plain Concrete Beams

Fracture mechanics is based on the assumption that all engineering materials contain cracks from which failure starts. Structures have sizeable existing cracks that might or might not grow, depending on the load level. when a material has an existing crack, that lead to high stresses near the crack tip. Stress field type in the region of the crack tip can be defined of mode I, where two fracture surfaces are displaced perpendicular to each other...