Masters Theses

Abstract

"One of the major threats to Aviation industry is the in-flight impact of birds. Aircraft windshields are intensively vulnerable to damage and hence need a certification requirement for a proven level of impact resistance. Bird strike experiments are very expensive and henceforth explicit numerical modeling techniques have grown importance. This compilation mainly relies on the theory of hydrodynamic impact and addresses basic shockwave equations. A smooth particle hydrodynamics based approach is chosen and the numerical simulation is carried out using contact-impact coupling algorithm. The simulation is run using the nonlinear explicit finite element code LSDYNA ver.971, developed by Lawrence Livermore National Laboratories. A traditional design of experiments approach, factorial design, has been utilized to facilitate the economical prediction of factors significantly affecting the pressure response in the bird strike analysis. Impact velocity, bird mass, bird aspect ratio, porosity and obliquity of impact are the various parameters investigated in the present work. The results show that main effects velocity and obliquity of impact, and 'porosity x obliquity' interaction effect, are the factors significantly affecting the pressure response in a bird strike analysis"--Abstract, page iii.

Advisor(s)

Chandrashekhara, K.

Committee Member(s)

Dharani, Lokeswarappa R.
Samaranayake, V. A.

Department(s)

Mechanical and Aerospace Engineering

Degree Name

M.S. in Mechanical Engineering

Publisher

Missouri University of Science and Technology

Publication Date

Fall 2010

Pagination

vii, 49 pages

Note about bibliography

Includes bibliographical references (pages 47-48).

Rights

© 2010 Venkata Varaha Raja Naga Prathyush Bheem Reddy, All rights reserved.

Document Type

Thesis - Open Access

File Type

text

Language

English

Subject Headings

Aircraft bird strikesExperimental designAirplanes -- Windshields -- Testing -- Computer simulation

Thesis Number

T 10213

Print OCLC #

863153343

Electronic OCLC #

909610309

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