Report on ASC project degradation of organic materials. | Zendy

A.L. Thompson | Zendy; John G. Curro | Zendy; Dana Rottach | Zendy; Gary S. Grest | Zendy; Chi S. Lo | Zendy; Joanne Budzien | Zendy

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Report on ASC project degradation of organic materials.

Author(s) -

A.L. Thompson,

John G. Curro,

Dana Rottach,

Gary S. Grest,

Chi S. Lo,

Joanne Budzien

Publication year - 2006

Language(s) - English

Resource type - Reports

DOI - 10.2172/893971

Subject(s) - stress (linguistics) , stress relaxation , degradation (telecommunications) , relaxation (psychology) , constitutive equation , finite element method , set (abstract data type) , deformation (meteorology) , code (set theory) , polymer , materials science , statistical physics , computer science , thermodynamics , physics , engineering , composite material , electronic engineering , creep , psychology , social psychology , philosophy , linguistics , programming language

Using molecular dynamics simulations, a constitutive model for the chemical aging of polymer networks was developed. This model incorporates the effects on the stress from the chemical crosslinks and the physical entanglements. The independent network hypothesis has been modified to account for the stress transfer between networks due to crosslinking and scission in strained states. This model was implemented in the finite element code Adagio and validated through comparison with experiment. Stress relaxation data was used to deduce crosslinking history and the resulting history was used to predict permanent set. The permanent set predictions agree quantitatively with experiment

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