Dissertation/Thesis Abstract

Development of a Strain Rate Sensitive Ice Material Model for Hail Ice Impact Simulation
by Tippmann, Jeffery Dwayne, M.S., University of California, San Diego, 2011, 138; 1488196
Abstract (Summary)

A strain rate sensitive ice material model for hail ice impact simulation has been developed using previously measured ice compressive strength at impact strain rates. Simulations were conducted in Abaqus/Explicit and were compared to experimental tests of simulated hail ice impacts on a force measurement bar apparatus. The force history during the ice impact event studied shows agreement between the simulation results and the experimental data. The overall trend of peak force versus kinetic energy was also compared, showing a strong correlation. The scatter in the measured ice compressive strength data was incorporated in the modeling approach and was found to represent the scatter in the sphere impact experimental test data. Observations of the failure progression of simulated hail impact were made using high speed video images during impact tests. The simulation-predicted failure progression was found to qualitatively match with the failure behavior exhibited by actual ice spheres, thereby indicating that the model represents some of the basic physics and phenomena that govern ice impacts.

Indexing (document details)
Advisor: Kim, Hyonny
Commitee: Benson, David J., Lanza di Scalea, Francesco
School: University of California, San Diego
Department: Structural Engineering
School Location: United States -- California
Source: MAI 49/03M, Masters Abstracts International
Subjects: Aerospace engineering, Mechanical engineering
Keywords: Abaqus model, Hail impact, Ice material, Strain rate
Publication Number: 1488196
ISBN: 978-1-124-43786-6
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