Estimating the Effective Elastic Parameters of Nodular Cast Iron from Micro-Tomographic Imaging and Multiscale Finite Elements: Comparison between Numerical and Experimental Results

被引：11

作者：

Pereira, Andre ^{[1
]}

Costa, Marcio ^{[1
,2
]}

Anflor, Carla ^{[3
]}

Pardal, Juan ^{[1
]}

Leiderman, Ricardo ^{[2
]}

机构：

[1] Fluminense Fed Univ, Engn Sch, Rua Passo Patria 156, BR-24210240 Niteroi, RJ, Brazil

[2] Fluminense Fed Univ, Inst Comp, Rua Passo Patria 156, BR-24210240 Niteroi, RJ, Brazil

[3] Univ Brasilia, Grp Expt & Computat Mech, BR-72405610 Gama, Brazil

来源：

METALS | 2018年 / 8卷 / 09期

关键词：

nodular cast iron; effective Young's modulus; computational homogenization; multiscale numerical methods; micro-CT; finite elements; 3D QUANTITATIVE-ANALYSIS; X-RAY MICROTOMOGRAPHY; TRABECULAR BONE; COMPUTATIONAL HOMOGENIZATION; GRAPHITE MORPHOLOGY; POROUS MATERIALS; DUCTILE IRON; MICROSTRUCTURE; COMPOSITES; ALGORITHM;

D O I：

10.3390/met8090695

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Herein, we describe in detail a methodology to estimate the effective elastic parameters of nodular cast iron, using micro-tomography in conjunction with multiscale finite elements. We discuss the adjustment of the image acquisition parameters, address the issue of the representative-volume choice, and present a brief discussion on image segmentation. In addition, the finite-element computational implementation developed to estimate the effective elastic parameters from segmented microstructural images is described, indicating the corresponding computational costs. We applied the proposed methodology to a nodular cast iron, and estimated the graphite elastic parameters through a comparison between the numerical and experimental results.

引用

页数：13

共 31 条

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