Thermo viscoelastic analysis with heat generation under cyclic load

J. Nakamura, Kenichi Sakaue, M. Takashi

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

Abstract

Since mechanical behaviors of polymeric materials are viscoelastic under load a certain part of energy given from external input force and/or displacement is consumed as loss energy in the material. The consumed loss energy could be changed into thermal energy which leads to heat generation and temperature rise. It is important to evaluate the correlation between temperature change and the amount of loss energy accumulated by mechanical loading. In this study, the authors discuss on temperature rise and its distribution in a soft epoxy resin due to periodic tensile load at several temperatures and make an approach to the evaluation of stress accompanied with heat generation. Firstly, mechanical properties of a soft epoxy resin were measured by dynamic test. Secondly, taking heat generation and temperature rise into account, deformation behavior in rubbery elastic condition is compared with that in viscoelastic one using data obtained by digital image correlation. As the results, remarkable difference of dynamic deformation behaviors under viscoelastic and rubbery conditions was confirmed. Under viscoelastic condition, spatially nonuniform heat generation and conduction lead to nonuniform temperature distribution in the center part of the specimen.

Original languageEnglish
Title of host publicationProceedings of the 2006 SEM Annual Conference and Exposition on Experimental and Applied Mechanics 2006
Pages1780-1785
Number of pages6
Volume4
Publication statusPublished - 2006
Externally publishedYes
EventSEM Annual Conference and Exposition on Experimental and Applied Mechanics 2006 - Saint Louis, MO
Duration: 2006 Jun 42006 Jun 7

Other

OtherSEM Annual Conference and Exposition on Experimental and Applied Mechanics 2006
CitySaint Louis, MO
Period06/6/406/6/7

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Keywords

  • Heat generation
  • Loss energy
  • Thermal conduction and convection
  • Viscoelasticity

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Nakamura, J., Sakaue, K., & Takashi, M. (2006). Thermo viscoelastic analysis with heat generation under cyclic load. In Proceedings of the 2006 SEM Annual Conference and Exposition on Experimental and Applied Mechanics 2006 (Vol. 4, pp. 1780-1785)