About this Abstract |
Meeting |
5th International Congress on 3D Materials Science (3DMS 2021)
|
Symposium
|
5th International Congress on 3D Materials Science (3DMS 2021)
|
Presentation Title |
Computational Micromechanics Analysis of Mechanical Behavior for Unidirectional Fiber Reinforced Plies |
Author(s) |
Nannan Song, Shenghua Wu, Matthew Jackson, Flavio Vasconcelos De Souza |
On-Site Speaker (Planned) |
Nannan Song |
Abstract Scope |
Unidirectional fiber-reinforced composites are highly anisotropic and exhibit various damage modes at the microscale. In this study, we use the Siemens Simcenter 3D Materials Engineering toolbox to build micromechanical models and to study the complex behavior of unidirectional composite plies. Representative Volume Elements (RVE’s) were constructed using different micromechanical models for fiber, resin and fiber-resin interface. An orthotropic nonlinear bi-modulus model is used to capture the asymmetry mechanical behavior between tension and compression commonly observed in carbon fiber filaments. For the thermoset resin, which exhibits pressure-sensitive behavior, a Drucker Prager model is used. The material properties of fiber, matrix and interface were obtained by reverse engineering from experimental values or from literature when needed. In order to avoid volumetric locking, a B-bar element integration method is used. This study shows that a single micromechanical model (RVE) can effectively capture the mechanical behavior and failure mode under different loading conditions. |
Proceedings Inclusion? |
Definite: Other |