2014-Sustainable Industrial Processing Summit
SIPS 2014 Volume 5: Composite, Ceramic, Quasi-crystals, Nanomaterials & Coatings
| Editors: | Kongoli F |
| Publisher: | Flogen Star OUTREACH |
| Publication Year: | 2014 |
| Pages: | 578 pages |
| ISBN: | 978-1-987820-07-2 |
| ISSN: | 2291-1227 (Metals and Materials Processing in a Clean Environment Series) |
CD shopping page
Numerical Simulation and Theoretical Modeling of Longitudinal and Transverse Compressive Failure in Fiber Reinforced Composite Materials
Takeaki Nadabe1; Nobuo Takeda2;1DEPARTMENT OF ADVANCED ENERGY, THE UNIVERSITY OF TOKYO, Kashiwa-shi, Japan; 2DEPARTMENT OF ADVANCED ENERGY, THE UNIVERISTY OF TOKYO, Kashiwa-shi, Japan;
Type of Paper: Regular
Id Paper: 389
Topic: 6
Abstract:
This study investigates the numerical simulation and theoretical modeling of longitudinal and transverse compressive failure in fiber reinforced composite materials. Firstly the numerical simulation of longitudinal compressive failure is conducted. The simulated results show that at one moment of the loading, the localized deformation catastrophically appears in the material, and the reduction of tangent shear stiffness plays an important role in this initiation of the localized deformation. Then a set of mathematical equations is obtained for the deformation of composite materials, and the mathematical solution of the equations is considered. There exists a state where arbitrariness occurs in solution of equations expressing deformation of composite materials. It is indicated that onset of arbitrariness in solution of equations expressing the deformation of composite materials is closely related with the initiation of longitudinal compressive failure, and also related with the initiation of narrow localized band in the materials. Secondly the transverse compressive failure is investigated. In the numerical simulation, multiple shear bands appear in the material, and one of the shear bands develops to the entire material, and the transverse compressive failure is formed in the material. The theoretical model of transverse compressive failure shows that the critical stress value is represented by fiber volume fraction, matrix Poisson's ratio, matrix yield stress and angle of shear band. Finally the numerical simulation of compressive failure in quasi-isotropic laminate is conducted. The localized deformation also appears in the laminate, and the simulated deformation of the material agrees with the microscope picture of the experimental result.