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Accession Number:
ADA063497
Title:
Simulation of the Dynamic Tensile Characteristics of Nylon Parachute Materials
Corporate Author:
AIR FORCE FLIGHT DYNAMICS LAB WRIGHT-PATTERSON AFB OH
Report Date:
1978-11-01
Abstract:
The empirical development of nylon material subroutines for use in computer analysis of parachute system dynamics is discussed. The subroutines account for material plasticity, creep and hysteresis. They predict peak forces and strains accurately or - 5 and are valid over broad ranges of strain rate three decades and tensile load zero to minimum breaking strength. The strain rate sensitivity of nylon is shown to be a manifestation of material creep. Previous models are simplistic by comparison and have been, in general, unsatisfactory. A package of data processing computer programs also developed provides the capability to quickly generate additional subroutines for similar materials from limited test data.
Descriptive Note:
Final rept. 1 Nov 1973-1 Nov 1976
Supplementary Note:
DOI: 10.21236/ADA063497
Pages:
0183
Distribution Statement:
Approved for public release; distribution is unlimited.
File Size:
4.69MB
