NDLI: Stochastic Reassembly for Managing the Information Complexity in Multilevel Analysis of Heterogeneous Materials

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Xu, Hongyi Deng, Hua Brinson, Catherine Dikin, Dmitriy Liu, Wing Kam Chen, Wei Greene, M. Steven Burkhart, Craig Papakonstantopoulos, George Poldneff, Mike
Copyright Year	2012
Abstract	Efficient and accurate analysis of materials behavior across multiple scales is critically important in designing complex materials systems with exceptional performance. For heterogeneous materials, apparent properties are typically computed by averaging stress-strain behavior in a statistically representative cell. To be statistically representative, such cells must be larger and are often computationally intractable, especially with standard computing resources. In this research, a stochastic reassembly approach is proposed for managing the information complexity and reducing the computational burden, while maintaining accuracy, of apparent property prediction of heterogeneous materials. The approach relies on a hierarchical decomposition strategy that carries the materials analyses at two levels, the RVE (representative volume element) level and the SVE (statistical volume element) level. The hierarchical decomposition process uses clustering methods to group SVEs with similar microstructure features. The stochastic reassembly process then uses t-testing to minimize the number of SVEs to garner their own apparent properties and fits a random field model to high-dimensional properties to be put back into the RVE. The RVE thus becomes a coarse representation, or “mosaic,” of itself. Such a mosaic approach maintains sufficient microstructure detail to accurately predict the macro-property but becomes far cheaper from a computational standpoint. A nice feature of the approach is that the stochastic reassembly process naturally creates an apparent-SVE property database. Thus, material design studies may be undertaken with SVE-apparent properties as the building blocks of a new material’s mosaic. Some simple examples of possible designs are shown. The approach is demonstrated on polymer nanocomposites.
Sponsorship	Design Engineering Division Computers and Information in Engineering Division
Starting Page	199
Ending Page	208
Page Count	10
File Format	PDF
ISBN	9780791845028
DOI	10.1115/DETC2012-70668
Volume Number	Volume 3: 38th Design Automation Conference, Parts A and B
Conference Proceedings	ASME 2012 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
Language	English
Publisher Date	2012-08-12
Publisher Place	Chicago, Illinois, USA
Access Restriction	Subscribed
Subject Keyword	Blocks (building materials) Design Databases Polymer nanocomposites Stress Testing
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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