Title page for ETD etd-01072008-165056

Type of Document

Master's Thesis

Author

Adilapuram, Srinivas ,

Author's Email Address

sadilap@ncsu.edu

URN

etd-01072008-165056

Title

Wrinkling analysis of thin membranes

Degree

Master of Science

Graduate Program

Mechanical Engineering

Advisory Committee

Advisor Name	Title
Dr. Jeffrey W. Eischen	Committee Chair
Dr. Kara Peters	Committee Member
Dr. Mohammed .A. Zikry	Committee Member

Keywords

wrinkling
buckling
thin membranes

Date of Defense

2008-01-07

Availability

unrestricted

Abstract

ADILAPURAM, SRINIVAS. Wrinkling Analysis of Thin Membranes. (Under the
direction of Dr. Jerey W. Eischen).
The objective of this research is to study the relationship between buckling loads
and wrinkling patterns, and also the wrinkle details, i.e. shape, wavelength, and
amplitude, in thin, initially
at, stress free membranes subject to certain prescribed
in-plane load and boundary conditions. A general analytical model for determining
the location and pattern of wrinkles in the thin membranes and for making prelimi-
nary estimates of their wavelength and amplitude is presented. Two computer models
have been developed to simulate wrinkling in thin membranes, a rectangular mem-
brane under simple shear and a square membrane subjected to bi-axial loading are
modeled using shell elements and analyzed. Extensive research was done in under-
standing and formulating the critical buckling loads for the two models and it was
found that there exist more than one mode shape for each load case in a nite sized
membrane. Whereas, in the previous work, it was shown that each load case has a
unique amplitude and wavelength i.e. one mode shape for a innitely long membrane.

Files

Filename		Size	Approximate Download Time (Hours:Minutes:Seconds)
Filename		Size	28.8 Modem	56K Modem	ISDN (64 Kb)	ISDN (128 Kb)	Higher-speed Access
	etd.pdf	23.45 Mb	01:48:34	00:55:50	00:48:51	00:24:25	00:02:05