INTEMA   05428
INSTITUTO DE INVESTIGACIONES EN CIENCIA Y TECNOLOGIA DE MATERIALES
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Constitutive modelling and computational simulations of the external pressure induced buckling collapse of HDPE liners
Autor/es:
PATRICIA FRONTINI; J.P. TORRES; F. RUEDA
Lugar:
Beijing
Reunión:
Conferencia; 13th International Conference on Fracture; 2013
Resumen:
The objective of this work is to evaluate the capability of an advanced constitutive model, namely the Three Network Model (TNM) of simulating the mechanical response of HDPE liners undergoing buckling collapse. In order to determine the input parameters for the model, a series of tensile and compressive uniaxial tests were conducted. Simulations were performed using Finite element modeling (FEM) analysis with the ABAQUS 6.10 package. The complex strain rate, temperature and pressure dependent mechanical response of HDPE was analyzed by modeling the dynamic event as an increasing volume of fluid entering the gap cavity between liner and host pipe, and a mathematical relationship between fluid flow rate and collapse pressure was proposed.