Concrete in compression: a plasticity theory with a novel hardening law

A rate-dependent cohesive crack model based on anisotropic damage coupled to plasticity

“…The first parameter is obtained directly from a uni-axial tension test as f nu ¼ f t : For f t =f c ¼ 0:10 and f cc =f c ¼ 3:0 we obtain f tu ¼ 0:236 f c and m ¼ 1:14: In order to obtain a realistic direction of the fracture plane in the tensile regime, where the fracture plane is perpendicular to the direction of the largest principal stress, the parameter a in (37) has to be larger than 2: In the proposed calibration is a ¼ 2:07 > 2: The obtained fracture criterion is close to experimental results for concrete in compression, e.g. summarized by Grass et al [19] for s 2 ¼ s 1 (y ¼ 0). …”

“…Moreover, the direction of the damage vector has an influence on the traction t and the damage stress d which, according to (19) and (20), can be reformulated as…”

A New Plasticity Model for Concrete in Compression Based on Artificial Neural Networks

“…Newer models typically use solid mechanics theories including the theory of plasticity, damage theory and fracture mechanics allowing the description of specific aspects of the response of concrete with a more or less sufficient accuracy and effective. To describe the characteristic behavior of concrete in compression, the plasticity model has been widely used because of its simple and direct representation of the state of multiaxial stress [6,7].…”

Constitutive modeling of steel-polypropylene hybrid fiber reinforced concrete using a non-associated plasticity and its numerical implementation

“…Over the past few decades, considerable research efforts have been invested in the development of elasto-plastic constitutive models for plain concrete (Imran and Pantazopoulou, 2001;Grassl et al, 2002;Park and Kim, 2005;Papanikolaou and Kappos, 2007). Some of such models have been successfully incorporated into commercial finite element codes and extensively utilized for the numerical simulation of concrete structures.…”