Stochastic multiscale modeling and damage progression for composite materials

Joel Johnston, Aditi Chattopadhyay

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Modeling and characterization of complex composite structures is challenging due to uncertainties inherent in these materials. Uncertainty is present at each length scale in composites and must be quantified in order to accurately model the mechanical response and damage progression of this material. The ability to pass information between length scales permits multiscale models to transport uncertainties from one scale to the next. Limitations in the physics and errors in numerical methods pose additional challenges for composite models. By replacing deterministic inputs with random inputs, stochastic methods can be implemented within these multiscale models making them more robust. This work focuses on understanding the sensitivity of multiscale models and damage progression variations to stochastic input parameters as well as quantifying these uncertainties within a modeling framework. A multiscale, sectional model is used due to its efficiency and capacity to incorporate stochastic methods with little difficulty. The sectional micromechanics in this model are similar to that of the Generalized Method of Cells with the difference being the discretization techniques of the unit cell and the continuity conditions. A Latin Hypercube sampling technique is used due to its reported computational savings over other methods such as a fully random Monte Carlo simulation. Specifically in the sectional model, the Latin Hypercube sampling method provides an approximate 35 % reduction in computations compared to the fully random Monte Carlo method. The Latin Hypercube sampling is a stratified technique which discretizes the distribution function and randomizes the input parameters within those

Original languageEnglish (US)
Title of host publicationASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)
PublisherAmerican Society of Mechanical Engineers (ASME)
Volume9
ISBN (Print)9780791856383
DOIs
StatePublished - 2013
EventASME 2013 International Mechanical Engineering Congress and Exposition, IMECE 2013 - San Diego, CA, United States
Duration: Nov 15 2013Nov 21 2013

Other

OtherASME 2013 International Mechanical Engineering Congress and Exposition, IMECE 2013
CountryUnited States
CitySan Diego, CA
Period11/15/1311/21/13

Fingerprint

Composite materials
Sampling
Micromechanics
Composite structures
Distribution functions
Numerical methods
Monte Carlo methods
Physics
Uncertainty

ASJC Scopus subject areas

  • Mechanical Engineering

Cite this

Johnston, J., & Chattopadhyay, A. (2013). Stochastic multiscale modeling and damage progression for composite materials. In ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE) (Vol. 9). American Society of Mechanical Engineers (ASME). https://doi.org/10.1115/IMECE2013-66566

Stochastic multiscale modeling and damage progression for composite materials. / Johnston, Joel; Chattopadhyay, Aditi.

ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE). Vol. 9 American Society of Mechanical Engineers (ASME), 2013.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Johnston, J & Chattopadhyay, A 2013, Stochastic multiscale modeling and damage progression for composite materials. in ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE). vol. 9, American Society of Mechanical Engineers (ASME), ASME 2013 International Mechanical Engineering Congress and Exposition, IMECE 2013, San Diego, CA, United States, 11/15/13. https://doi.org/10.1115/IMECE2013-66566
Johnston J, Chattopadhyay A. Stochastic multiscale modeling and damage progression for composite materials. In ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE). Vol. 9. American Society of Mechanical Engineers (ASME). 2013 https://doi.org/10.1115/IMECE2013-66566
Johnston, Joel ; Chattopadhyay, Aditi. / Stochastic multiscale modeling and damage progression for composite materials. ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE). Vol. 9 American Society of Mechanical Engineers (ASME), 2013.
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