Name: Modeling the Nonlinear, Strain Rate Dependent Deformation of Woven Ceramic Matrix Composites with Hydrostatic Stress Effects Included (en Inglés)
SKU: 59701210
Price: 84253.00 COP
Availability: InStock
Author: Goldberg, Robert K. ; Carney, Kelly S. ; Nasa Technical Reports Server (Ntrs)
ISBN: 9781287269526

portada Modeling the Nonlinear, Strain Rate Dependent Deformation of Woven Ceramic Matrix Composites with Hydrostatic Stress Effects Included (en Inglés)

Modeling the Nonlinear, Strain Rate Dependent Deformation of Woven Ceramic Matrix Composites with Hydrostatic Stress Effects Included (en Inglés)

Formato

Libro Físico

Autor

Nasa Technical Reports Server (Ntrs)

Robert K. Goldberg

Kelly S. Carney

Editorial

Bibliogov

Idioma

Inglés

N° páginas

Encuadernación

Tapa Blanda

Dimensiones

24.6x18.9x0.1 cm

Peso

0.06 kg.

ISBN13

9781287269526

Categorías

Política y gobierno

Modeling the Nonlinear, Strain Rate Dependent Deformation of Woven Ceramic Matrix Composites with Hydrostatic Stress Effects Included (en Inglés)

Nasa Technical Reports Server (Ntrs) (Autor) · Robert K. Goldberg (Autor) · Kelly S. Carney (Autor) · Bibliogov · Tapa Blanda

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Reseña del libro "Modeling the Nonlinear, Strain Rate Dependent Deformation of Woven Ceramic Matrix Composites with Hydrostatic Stress Effects Included (en Inglés)"

An analysis method based on a deformation (as opposed to damage) approach has been developed to model the strain rate dependent, nonlinear deformation of woven ceramic matrix composites with a plain weave fiber architecture. In the developed model, the differences in the tension and compression response have also been considered. State variable based viscoplastic equations originally developed for metals have been modified to analyze the ceramic matrix composites. To account for the tension/compression asymmetry in the material, the effective stress and effective inelastic strain definitions have been modified. The equations have also been modified to account for the fact that in an orthotropic composite the in-plane shear stiffness is independent of the stiffness in the normal directions. The developed equations have been implemented into a commercially available transient dynamic finite element code, LS-DYNA, through the use of user defined subroutines (UMATs). The tensile, compressive, and shear deformation of a representative plain weave woven ceramic matrix composite are computed and compared to experimental results. The computed values correlate well to the experimental data, demonstrating the ability of the model to accurately compute the deformation response of woven ceramic matrix composites.