MICROMECHANICS OF DAMAGE DEVELOPMENT IN POLYMER COMPOSITES

Arabatti, Trupti and Sudhir, Aswathi and Gururaja, Suhasini (2015) MICROMECHANICS OF DAMAGE DEVELOPMENT IN POLYMER COMPOSITES. In: ASME International Mechanical Engineering Congress and Exposition (IMECE2014), NOV 14-20, 2014, Montreal, CANADA.

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Abstract

Damage initiation and progression in uni-directional continuous polymer composites at the microscale has been investigated by considering a 3D Repeating Unit Cell (RUC) with square distribution of fibers. Three damage modes under static loading have been looked at, viz., matrix damage, fiber failure and fiber-matrix debonding. The matrix has been modeled as an isotropic elastic-plastic material via a user material subroutine (UMAT) within the framework of the finite element software Abaqus. In addition, fiber-matrix debonding has been simulated using a traction-separation criterion via Cohesive Zone Modeling (CZM) approach. Finally, a user defined field (USDFLD) has been used to simulate the fiber breakage. The combined effect of matrix damage, fiber failure and interfacial debonding has then been studied using homogenization principles. Preliminary results from the current modeling approach have been found to be encouraging and this approach paves way for more complex multi-scale damage simulations in heterogeneous materials.

Item Type:	Conference Proceedings
Publisher:	AMER SOC MECHANICAL ENGINEERS
Additional Information:	Copy right for this article belongs to the AMER SOC MECHANICAL ENGINEERS, THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA
Department/Centre:	Division of Mechanical Sciences > Aerospace Engineering(Formerly Aeronautical Engineering)
Date Deposited:	22 Jun 2016 06:28
Last Modified:	22 Jun 2016 06:28
URI:	http://eprints.iisc.ac.in/id/eprint/54069

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