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Maedeh Amirpour

Topic: Numerical modeling of damage for Functionally Graded (FG) plate 

Authors: Ms Maedeh Amirpour, Prof Simon Bickerton from the Centre for Advanced Composite Materials at the University of Auckland, New Zealand

Presented by: Ms Maedeh Amirpour, PhD candidate at the Centre for Advanced Composite Materials at the University of Auckland, New Zealand


The paper presents an elasto-plastic damage model based on irreversible thermodynamics for the analysis of functionally graded (FG) plates with in-plane material property variations. The model considers a simple power law function to describe the FG plates as continua with smooth variation of material properties, such as Young’s Modulus, yield stress, plastic material constants and damage parameters. Employing the operator splitting methodology, a three-step predictor/multi-corrector algorithm is developed that includes an elastic predictor, a plastic corrector, and a damage corrector. Then, the damage finite element (FE) solutions are obtained using linear hexahedral solid elements with spatially graded property distribution (at different Gauss points), and subsequently implemented by a user material subroutine (UMAT) in the ABAQUS FE software.

Presenter’s resume

After finishing bachelor in Mechanical Engineering at Sharif University of Technology (SUT), Iran, Maedeh Amirpour pursued her education in “Automotive Engineering-Powertrain Design” receiving the first rank M.Sc award in 2010. Since joining the University of Auckland in 2014 her work has focused on structural analysis and damage modeling of new advanced composite materials called FG at the university’s CACM (Centre of Advanced Composite Materials).  Ms Amirpour  received a full scholarship from the University of Auckland for three years and was recently presented with the prestigious Amelia Earhart Fellowship from the USA, awarded to only 35 Ph.D candidates worldwide.