Atomistically informed multiscale modeling of damage mechanisms in cnt-enhanced bonded joints

K. R. Venkatesan, A. Rai, Aditi Chattopadhyay

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

Abstract

A multiscale modeling framework that integrates an atomistically informed damage model for carbon nanotube (CNT)-reinforced polymers is used to assess the mechanical property degradation, damage, and failure in adhesive bonded composite components with a CNT-enhanced adhesive layer. The atomistically informed damage model is developed using a continuum damage mechanics approach with varying CNT weight fractions. The developed damage model is implemented at the microscale using high-fidelity generalized method of cells (HFGMC) micromechanics accounting for the material constituents and imperfect interfaces. The micromechanical model is then coupled with a finite element simulation of a composite adhesively bonded T-Joint, achieving a nano-micro-macro multiscale analysis framework. This multiscale framework is validated using experimental observations at the macro and mesoscale whereby global load-displacement response and local strains are compared at critical structurally sensitive regions.

Original languageEnglish (US)
Title of host publicationAIAA Scitech 2019 Forum
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
ISBN (Print)9781624105784
DOIs
StatePublished - Jan 1 2019
EventAIAA Scitech Forum, 2019 - San Diego, United States
Duration: Jan 7 2019Jan 11 2019

Publication series

NameAIAA Scitech 2019 Forum

Conference

ConferenceAIAA Scitech Forum, 2019
CountryUnited States
CitySan Diego
Period1/7/191/11/19

Fingerprint

Carbon nanotubes
Macros
Adhesives
Continuum damage mechanics
Micromechanics
Composite materials
Loads (forces)
Degradation
Mechanical properties
Polymers

ASJC Scopus subject areas

  • Aerospace Engineering

Cite this

Venkatesan, K. R., Rai, A., & Chattopadhyay, A. (2019). Atomistically informed multiscale modeling of damage mechanisms in cnt-enhanced bonded joints. In AIAA Scitech 2019 Forum (AIAA Scitech 2019 Forum). American Institute of Aeronautics and Astronautics Inc, AIAA. https://doi.org/10.2514/6.2019-1043

Atomistically informed multiscale modeling of damage mechanisms in cnt-enhanced bonded joints. / Venkatesan, K. R.; Rai, A.; Chattopadhyay, Aditi.

AIAA Scitech 2019 Forum. American Institute of Aeronautics and Astronautics Inc, AIAA, 2019. (AIAA Scitech 2019 Forum).

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

Venkatesan, KR, Rai, A & Chattopadhyay, A 2019, Atomistically informed multiscale modeling of damage mechanisms in cnt-enhanced bonded joints. in AIAA Scitech 2019 Forum. AIAA Scitech 2019 Forum, American Institute of Aeronautics and Astronautics Inc, AIAA, AIAA Scitech Forum, 2019, San Diego, United States, 1/7/19. https://doi.org/10.2514/6.2019-1043
Venkatesan KR, Rai A, Chattopadhyay A. Atomistically informed multiscale modeling of damage mechanisms in cnt-enhanced bonded joints. In AIAA Scitech 2019 Forum. American Institute of Aeronautics and Astronautics Inc, AIAA. 2019. (AIAA Scitech 2019 Forum). https://doi.org/10.2514/6.2019-1043
Venkatesan, K. R. ; Rai, A. ; Chattopadhyay, Aditi. / Atomistically informed multiscale modeling of damage mechanisms in cnt-enhanced bonded joints. AIAA Scitech 2019 Forum. American Institute of Aeronautics and Astronautics Inc, AIAA, 2019. (AIAA Scitech 2019 Forum).
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