DAMPING PROPERTIES OF VISCOELASTIC MATERIALS UNDER BIAXIAL STRESS.

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Abstract:

The damping characteristics of a temperature independent viscoelastic material are determined under axial, shear, and several combinations of both axial and shear loadings. A method for measuring these properties is devised by considering a double lap joint specimen and measuring the area of the hysteresis loops which resulted from the cyclic loading of the specimen under axial, shear, and several combinations of both axial and shear conditions. The complex elastic and shear moduli and Poissons ratio are presented as a function of the strain amplitude. The experimental results of the damping properties under biaxial stresses are found to be in good agreement with the theoretical analysis. Author

Author(s):
Nashif, A. D.
Author Organization(s):
DAYTON UNIV OH RESEARCH INST
Descriptive Note:
Summary rept. Jul 63-Oct 64,
Annotation:
Damping properties of viscoelastic materials, under biaxial stress.
Pagination:
0057

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
AFML-TR-65-296
Contract/Grant Number(s):
AF33 615 1506
Task Number(s):
735106
Project Number(s):
AF7351
Monitor Series:
TR-65-296
 Subject Terms
Communities of Interest:
No COI(s) Identified
Descriptor(s):
(*VISCOELASTICITY, MATERIALS), (*DAMPING, VISCOELASTICITY), PERFORMANCE(ENGINEERING), STRAIN(MECHANICS), FATIGUE(MECHANICS), VIBRATION, SURFACE PROPERTIES, DEFORMATION, SHEAR STRESSES, NUMERICAL METHODS AND PROCEDURES, MODEL TESTS, THEORY, MEASUREMENT, AIRCRAFT, TABLES(DATA), SAFETY, FAILURE(MECHANICS), PARTIAL DIFFERENTIAL EQUATIONS, TABLES(DATA)
Keyword(s):
PROCEDURES
Report Date:
1965 Aug 01