Accession Number : AD0739857

Title :   A New Model for the Dynamic Behavior of Elastomeric Materials.

Descriptive Note : Technical rept. Jun 70-Sep 71,

Corporate Author : AIR FORCE MATERIALS LAB WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Edwards,J. L. ; Hicks,D. R.

Report Date : DEC 1971

Pagination or Media Count : 47

Abstract : A mathematical model describing the dynamic behavior of rubber or elastomeric materials was developed. It is based on Flory's concept of the rotational isomeric state model of polymer chains. With a unit step strain applied to the material, each polymer chain is assumed to go from an unrelaxed initial configuration to a fully relaxed equilibrium state at a rate described by a non-linear first-order differential equation. The differential equation is derived by assuming that the relaxation rate is proportional to a probability function, namely, the probability that the elastic and thermal energy present in the chain is greater than or equal to a critical value. (Author)

Descriptors :   (*ELASTOMERS, MATHEMATICAL MODELS), STRESSES, CHEMICAL BONDS, NONLINEAR DIFFERENTIAL EQUATIONS, COMPUTER PROGRAMS, DYNAMICS, DAMPING

Subject Categories : Elastomers and Rubber

Distribution Statement : APPROVED FOR PUBLIC RELEASE