Comparative FE Study between MAT159 and MAT072R3 for Concrete Behaviour Modelling under Quasi-static Loading in LS-DYNA

FE programs have been widely used to study behaviour of reinforced concrete,
owing to the complexity and nonlinearity of reinforced concrete which cause
analytical methods to be impractical. LS-DYNA has gained its position for
conducting quasi-static simulation using transient dynamic analysis in the recent
years. Material models MAT159 and MAT072R3 are used extensively in concrete
behaviour modelling as they require the least input from user, among all other
concrete material models. Therefore, the behaviour and reliability of both material
models, which are formed on the basis of varying failure surfaces, used for
simulating reinforced concrete beams under quasi-static loading are of interest. A
comparative study between MAT159 and MAT72R3 is carried out to investigate the
flexural and shear behaviour of reinforced concrete beams loaded under quasi-static
loading, which is a displacement-controlled static loading, using selected specimens
of control beam tested experimentally by various researchers.