تقرير
Multi-Scale Computational Modeling of Two-Phased Metal Using GMC Method
العنوان: | Multi-Scale Computational Modeling of Two-Phased Metal Using GMC Method |
---|---|
المؤلفون: | Moghaddam, Masoud Ghorbani, Achuthan, A, Bednacyk, B. A, Arnold, S. M, Pineda, E. J |
بيانات النشر: | United States: NASA Center for Aerospace Information (CASI), 2014. |
سنة النشر: | 2014 |
مصطلحات موضوعية: | Structural Mechanics, Metals And Metallic Materials |
الوصف: | A multi-scale computational model for determining plastic behavior in two-phased CMSX-4 Ni-based superalloys is developed on a finite element analysis (FEA) framework employing crystal plasticity constitutive model that can capture the microstructural scale stress field. The generalized method of cells (GMC) micromechanics model is used for homogenizing the local field quantities. At first, GMC as stand-alone is validated by analyzing a repeating unit cell (RUC) as a two-phased sample with 72.9% volume fraction of gamma'-precipitate in the gamma-matrix phase and comparing the results with those predicted by finite element analysis (FEA) models incorporating the same crystal plasticity constitutive model. The global stress-strain behavior and the local field quantity distributions predicted by GMC demonstrated good agreement with FEA. High computational saving, at the expense of some accuracy in the components of local tensor field quantities, was obtained with GMC. Finally, the capability of the developed multi-scale model linking FEA and GMC to solve real life sized structures is demonstrated by analyzing an engine disc component and determining the microstructural scale details of the field quantities. |
نوع الوثيقة: | Report |
اللغة: | English |
URL الوصول: | https://ntrs.nasa.gov/citations/20140016761 |
ملاحظات: | WBS 794072.02.03.03.02.01 |
رقم الأكسشن: | edsnas.20140016761 |
قاعدة البيانات: | NASA Technical Reports |
كن أول من يترك تعليقا!