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Hypoplastic constitutive equation is a mathematical tool which offers the possibility to reliably simulate unbound granular materials (UGM) behavior under static and monotonic loads. However, such equation overestimates the permanent strain accumulation under cyclic loads (e.g. in a pavement structure). This paper presents an extension of the Wolffersdorff’s Hypoplastic constitutive equation (1996) (currently one of the most used equations), aiming for improving its performance under cyclic loads. Beside this, cyclic triaxial tests simulations are presented using the extended version with constant and variable confining pressures. Triaxial tests are the most used when studying UGM behavior in pavements. Simulation results demonstrated the ability of the proposed equation for reproducing the behavior of granular materials under cyclic tests.

EXTENSIÓN DE UNA ECUACIÓN CONSTITUTIVA HIPOPLÁSTICA PARA SIMULAR ENSAYOS TRIAXIALES CÍCLICOS