skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Forming Simulations of MMC Components by a Micromechanics Based Hierarchical FEM Approach

Abstract

The present work deals with computational simulations of an elastoplastic particulate metal matrix composite undergoing finite strains. Two different approaches are utilized for homogenization and localization; an analytical constitutive material law based on a mean field approach, and a periodic unit cell method. Investigations are performed on different length scales. The Finite Element Method is employed to predict the macroscopic response of a component made from a metal matrix composite. Its constitutive material law, based on the incremental Mori Tanaka approach, has been implemented into an Finite Element Method package, and is extended to the finite strain regime. This approach gives access to the mesoscale fields as well as to approximations for the microscale fields in the individual phases of the composite. Selected locations within the macroscopic model are chosen and their entire mesoscopic deformation history is applied to unit cells using the periodic microfield approach. As a result, mesoscopic responses as well as highly resolved microfields are available. A Gleeble-type experiment employing a metal matrix composite with 20vol% of particles is investigated as an example. Comparison of the composite's effective response exhibits excellent agreement in the deformation as well as stress and strain fields, which qualifies the incremental Morimore » Tanaka approach as appropriate constitutive law for the studied application. For detailed predictions of the fluctuating fields in the matrix and the particles the unit cell approach is employed.« less

Authors:
;  [1];  [2];  [3]; ;  [4]
  1. Austrian Aeronautics Research (AAR) / Network for Materials and Engineering, Institute of Lightweight Design and Structural Biomechanics, Vienna University of Technology, A-1040 (Austria)
  2. Austrian Aeronautics Research (AAR) / Network for Materials and Engineering (Austria)
  3. Bohler Schmiedetechnik GmbH and Co KG, A-8605 Kapfenberg (Austria)
  4. Institute of Lightweight Design and Structural Biomechanics, Vienna University of Technology, A-1040 (Austria)
Publication Date:
OSTI Identifier:
21057361
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 908; Journal Issue: 1; Conference: NUMIFORM '07: 9. international conference on numerical methods in industrial forming processes, Porto (Portugal), 17-21 Jun 2007; Other Information: DOI: 10.1063/1.2740997; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; APPROXIMATIONS; COMPARATIVE EVALUATIONS; COMPOSITE MATERIALS; COMPUTERIZED SIMULATION; DEFORMATION; FINITE ELEMENT METHOD; MATERIALS WORKING; MATRICES; MEAN-FIELD THEORY; METALS; PERIODICITY; REINFORCED MATERIALS; STRAINS; STRESSES

Citation Formats

Huber, C. O., Pettermann, H. E., Luxner, M. H., Kremmer, S., Nogales, S., and Boehm, H. J.. Forming Simulations of MMC Components by a Micromechanics Based Hierarchical FEM Approach. United States: N. p., 2007. Web. doi:10.1063/1.2740997.
Huber, C. O., Pettermann, H. E., Luxner, M. H., Kremmer, S., Nogales, S., & Boehm, H. J.. Forming Simulations of MMC Components by a Micromechanics Based Hierarchical FEM Approach. United States. doi:10.1063/1.2740997.
Huber, C. O., Pettermann, H. E., Luxner, M. H., Kremmer, S., Nogales, S., and Boehm, H. J.. Thu . "Forming Simulations of MMC Components by a Micromechanics Based Hierarchical FEM Approach". United States. doi:10.1063/1.2740997.
@article{osti_21057361,
title = {Forming Simulations of MMC Components by a Micromechanics Based Hierarchical FEM Approach},
author = {Huber, C. O. and Pettermann, H. E. and Luxner, M. H. and Kremmer, S. and Nogales, S. and Boehm, H. J.},
abstractNote = {The present work deals with computational simulations of an elastoplastic particulate metal matrix composite undergoing finite strains. Two different approaches are utilized for homogenization and localization; an analytical constitutive material law based on a mean field approach, and a periodic unit cell method. Investigations are performed on different length scales. The Finite Element Method is employed to predict the macroscopic response of a component made from a metal matrix composite. Its constitutive material law, based on the incremental Mori Tanaka approach, has been implemented into an Finite Element Method package, and is extended to the finite strain regime. This approach gives access to the mesoscale fields as well as to approximations for the microscale fields in the individual phases of the composite. Selected locations within the macroscopic model are chosen and their entire mesoscopic deformation history is applied to unit cells using the periodic microfield approach. As a result, mesoscopic responses as well as highly resolved microfields are available. A Gleeble-type experiment employing a metal matrix composite with 20vol% of particles is investigated as an example. Comparison of the composite's effective response exhibits excellent agreement in the deformation as well as stress and strain fields, which qualifies the incremental Mori Tanaka approach as appropriate constitutive law for the studied application. For detailed predictions of the fluctuating fields in the matrix and the particles the unit cell approach is employed.},
doi = {10.1063/1.2740997},
journal = {AIP Conference Proceedings},
number = 1,
volume = 908,
place = {United States},
year = {Thu May 17 00:00:00 EDT 2007},
month = {Thu May 17 00:00:00 EDT 2007}
}