ENGINEERING PROFESSIONAL EDUCATION - EXAM COVER SHEET
EXAM INFO
Exam Number: Final
Scheduled Exam Date: May 1, 2013
PROFESSOR (THE FOLLOWING MUST BE COMPLETED BY THE PROFESSOR.)
COURSE: ME 559
PROFESSOR'S PHONE: (765) 426-7758
PROFESSOR NAME: Thomas Siegm
Page 1
Problem 1. Consider the 45-degree off-axis tensile coupon. If the material properties
are:
E1 = 140 GPa, E2 = 10 GPa, 612 = 7 GPa and v12 = 0.3
The stiffness matrix for the 45-degree off-axis specimen is:
% u am
[Qla
32.25 46.25 32.71 GPa
32.71 32.
FE Modeling of Composite
Materials
ME 559 Micromechanics of
Materials
ME559
Thomas Siegmund/Purdue
FE-Model?
http:/www.scielo.br/img/fbpe/jbsms/v23n1/a01fig2c.gif
ME559
Thomas Siegmund/Purdue
Motivation
Realistic geometry of particles/fibers
Comparison to
ME559-HW2-Spring 2011.
Leye Amoo
1. Matrix: E = 50,000 MPa, Fracture Stress for the matrix is 200 Mpa
Fiber: E= 350 000 Mpa, Fracture stress for the fiber is 1000 Mpa
(a) We want failure stress of the composite in longitudinal direction to be better the 5
ME559 Micromechanics of Materials, Spring 2013
Homework #4
Assigned 3/6/2013
Due 3/20/2013
Part #1 (40pts):
Proof
cfw_
N
(
C = I + f B T
=1
)
1
CM
Part #2 (60pts):
For a short fiber reinforced composite made of an aluminum matrix (Al) with SiC Fibers
Part #1 (40pts):
1
Pm EE=I+§fa(BT) CM
oar1
Part #2 (60pts):
For a short ber reinforced composite made of an aluminum matrix (A1) with SiC Fibers (25%)
compute the stiffness and compliance matrices using
(a) the dilute result
(b) the self Consistent result
Q2 ]
Now using the rule of mixture. We can assumes that the modulus of a composite is the
combination of the modulus of the fiber and the matrix that are related by the volume fraction
of the constituent materials
So Ecomposite =EA*VA+EB*VB =10*EB*0.5+EB*
. . . l l DI!
3.73 33:! 3332 VI JV JI pill. U V «(U D
PROBLEM #1 (50 points)
in composite mechanics one important concern is that of localization. That is
' given an applied strain state one aims to compute the strains in the inclusion.
Consider the dilu
Property Predictions
ME 559 Micromechanics of Materials
ME 559
T. Siegmund ME/Purdue
1/Chapter 4
Goals
Employ results obtained from eigenstrain/eigenstress
analysis to homogenization
Special case: spherical inclusion
Consider:
Dilute solution for low
7680
Macromolecules 2010, 43, 76807688
DOI: 10.1021/ma101484e
Tensile Strength and Youngs Modulus of Polyisoprene/Single-Wall
Carbon Nanotube Composites Increased by High Pressure Cross-linking.
Bounphanh Tonpheng, Junchun Yu, Britt M Andersson, and Ove A
Basic Composite Mechanics:
Why Composites?
ME 559 Micromechanics of
Materials
ME 559
T. Siegmund ME/Purdue
1/Chapter 1
The Material Space is Empty
1000
Modulus [GPa]
Beryllium
Alumina
100
Aluminum
10
1
ME 559
Density [g/ccm]
T. Siegmund ME/Purdue
10
2/Cha
Basic Composite Mechanics:
Why Composites?
ME 559 Micromechanics of
Materials
ME 559
T. Siegmund ME/Purdue
1/Chapter 1
The Material Space is Empty
1000
Modulus [GPa]
Beryllium
Alumina
100
Aluminum
10
1
ME 559
Density [g/ccm]
T. Siegmund ME/Purdue
10
2/Cha
ProjectProposalME5592013
ThermalStressesinPhaseChangeMaterials
LeyeM.Amoo
SchoolofMechanicalEngineering,PurdueUniversity,WestLafayette,IN47907.
Phasechangematerialscanbedefinedorclassifiedas materials havinghighheatof
fusion such that they can absorb ener
1
Determination of the value of distributed load applied on a glass
plate according the damage equivalent stress concept
- The plate is made from glass. It has rectangular shape with dimensions
2a=1m; 2b=0,5m and h=0,01m;
- The plate is placed on a simple
PROBLEM #1
Starting from a honeycomb and setting h=0 and 0=4S°
squarenshaped cells in which the cell walls are diagonal
remaining cell wall length is L, the wall thickness
one arrives at a cellular structure with
s in the 12 coordinate system. The
is t an
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by Ca
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by Ca
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by Ca
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by Ca
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Scanned by CamScanner
Abstract
Stiffness Healing Efficiency in Self Healing Hockey Sticks
Student Name
Purdue University, ME559
The stiffness healing efficiency for a hollow fiber self-healing composite is demonstrated as a new
material for composite hockey sticks. Hockey stic
Composite Mechanics of the Yucca Leaf
Your Name
ME559 Spring 2017
Purdue University
The leaf of the yucca plant has long been used as a biological substance to extract fibrous
materials to create ropes etc. This indicates that the fibers in the yucca leaf