Call number:
ZSP-201-79/20
In:
CRREL Report, 79-20
Description / Table of Contents:
A volumetric constitutive equation was developed to characterize the behavior of snow subjected to large compressive volumetric deformations. By treating the material as a suspension of air voids in a matrix material of polycrystalline ice, a rate-dependent volumetric constitutive law was formulated and found to accurately predict material response to pressure loads for a wide range of load rates. Comparison of the theory with shock wave data was not considered in this paper, although the constitutive law appears to be valid for such load situations. One application to oversnow mobility of tracked vehicles was made. In this case, power requirements due to snow compaction were calculated parametrically in terms of vehicle speed, track loading, and snow density.
Type of Medium:
Series available for loan
Pages:
v, 13 Seiten
,
Illustrationen
Series Statement:
CRREL Report 79-20
URL:
https://apps.dtic.mil/docs/citations/ADA075474
URL:
https://hdl.handle.net/11681/9052
Language:
English
Note:
CONTENTS
Abstract
Preface
Nomenclature
Introduction
Material representation of ice
Development of the volumetric constitutive law for snow
Fully elastic phase
Elastic-plastic phase
Fully plastic phase
Simplified equation
Comparison with experimental data
Application to vehicle mobility problems
Conclusions
Literature cited
Location:
AWI Archive
Branch Library:
AWI Library
