Constitutive models for rubber networks undergoing simultaneous crosslinking and scission.

Thompson, Aidan Patrick ; Curro, John G. ; Rottach, Dana R. (University of New Mexico, Albuquerque, NM) ; Grest, Gary Stephen ; Budzien, Joanne L. ; Lo, David Chi S.

Sandia National Laboratories

关键词: Finite Element Method Molecular Dynamics.;    Chemical Reactions;    99 General And Miscellaneous//Mathematics, Computing, And Information Science;    Cross-Linking;    37 Inorganic, Organic, Physical And Analytical Chemistry;   

DOI  :  10.2172/877144
RP-ID  :  SAND2005-7357
RP-ID  :  AC04-94AL85000
RP-ID  :  877144

美国|英语

来源: UNT Digital Library

【 摘 要 】

Constitutive models for chemically reacting networks are formulated based on a generalization of the independent network hypothesis. These models account for the coupling between chemical reaction and strain histories, and have been tested by comparison with microscopic molecular dynamics simulations. An essential feature of these models is the introduction of stress transfer functions that describe the interdependence between crosslinks formed and broken at various strains. Efforts are underway to implement these constitutive models into the finite element code Adagio. Preliminary results are shown that illustrate the effects of changing crosslinking and scission rates and history.