Study of an anisotropic polymeric cellular material under compression loading
AUTOR(ES)
Caliri Júnior, Mauricio Francisco, Soares, Gustavo Pazzianotto, Angélico, Ricardo Afonso, Canto, Rodrigo Bresciani, Tita, Volnei
FONTE
Materials Research
DATA DE PUBLICAÇÃO
27/03/2012
RESUMO
This paper emphasizes the influence of micro mechanisms of failure of a cellular material on its phenomenological response. Most of the applications of cellular materials comprise a compression loading. Thus, the study focuses on the influence of the anisotropy in the mechanical behavior of cellular material under cyclic compression loadings. For this study, a Digital Image Correlation (DIC) technique (named Correli) was applied, as well as SEM (Scanning Electron Microscopy) images were analyzed. The experimental results are discussed in detail for a closed-cell rigid poly (vinyl chloride) (PVC) foam, showing stress-strain curves in different directions and why the material can be assumed as transversely isotropic. Besides, the present paper shows elastic and plastic Poisson's ratios measured in different planes, explaining why the plastic Poisson's ratios approach to zero. Yield fronts created by the compression loadings in different directions and the influence of spring-back phenomenon on hardening curves are commented, also.
Documentos Relacionados
- Numerical simulation of anisotropic polymeric foams
- Stress Distribution in Graded Cellular Materials Under Dynamic Compression
- Anisotropic Strength of Granular Material Considering Fabric Evolution
- Numerical Study On Multi Layered Target Material Subjected To Impact Loading
- Elastoplastic Stability and Failure Analysis of FGM Plate with Temperature Dependent Material Properties under Thermomechanical Loading