COURSE UNIT TITLE

: THEORY OF COMPOSITE PLATES AND SHELLS

Description of Individual Course Units

Course Unit Code Course Unit Title Type Of Course D U L ECTS
MEE 6022 THEORY OF COMPOSITE PLATES AND SHELLS ELECTIVE 3 0 0 8

Offered By

Graduate School of Natural and Applied Sciences

Level of Course Unit

Second Cycle Programmes (Master's Degree)

Course Coordinator

PROFESSOR DOCTOR ÇINAR EMINE YENI

Offered to

M.Sc. Metallurgical and Material Engineering
Metallurgical and Material Engineering
Mechanics
Mechanics
Metallurgical and Material Engineering
Mechanics

Course Objective

While an understanding of lamina mechanical behavior is essential to the development of theories for the analysis of composite structures, the unidirectional lamina alone is generally not very useful as a structural element because of its poor transverse properties. Composite structures are more likely to be in the form of laminates consisting of multiple laminae, or plies, oriented in the desired directions and bonded together in a structural unit. This fact will be followed by a discussion of the more general Classical Lamination Theory which makes it possible to analyze the complex coupling effects that may occur in laminates. Other aspects of laminate analysis, such
as prediction of thermal and residual stresses, and laminate strength will be discussed.

Learning Outcomes of the Course Unit

1   To define the general classical lamination theory for the analysis of nonsymmeteic laminates.
2   To identify the stiffness characteristics of laminates for various configurations.
3   To calculate the three dimensional interlaminar stresses occurring in plies for various orientations.
4   To analyse the impact properties of composite plates and shells in order to represent their capacity for absorbing and dissipating energy under impact shock loading.
5   To develop fracture initiation and propagation behavior of laminates.
6   To predict the strength of composites containing cracks and notches by using fracture mechanics and stress fracture approaches.

Mode of Delivery

Face -to- Face

Prerequisites and Co-requisites

None

Recomended Optional Programme Components

None

Course Contents

Week Subject Description
1 Introduction Theory of Laminated Plates with Coupling Derivation and Use of Laminate Compliances
2 Theory of Laminated Beams in Pure Flexure Analysis of Laminates
3 Stiffness Characteristics of Selected Laminate Configurations Symmetrical Laminates Antisymmetric Laminates Quasi-Isotropic Laminates
4 Interlaminar Stresses Thermal Expansion Coefficient Strength of Cross-Ply Laminates
5 First Ply Failure Due to In-Plane Stresses
6 Impact Properties Charpy Impact Test Izod Impact Test Drop-Weight Impact Test
7 1. Midterm
8 Fracture Initiation and Propagation Energies Low Energy Impact Tests Residual Strength After Impact
9 Dynamic Behavior of Composites
10 Flexural Vibration of Composite Beams
11 Analysis of Viscoelastic and Dynamic Behavior Linear Viscoelastic Behavior of Composites Boltzman Superposition Integrals for Creep and Relaxation Differential Equations and Spring-Dashpot Models
12 2. Midterm
13 Analysis of Fracture Fracture Mechanics Analysis of Through-Thickness Cracks Stress Intensity Factor Approach
14 Strain Energy Release Approach Energy Methods

Recomended or Required Reading

1) Mechanics of Composite Materials, 2nd Edition, Robert M. Jones, Taylor and Francis, 1999, ISBN 1-56032-712-X.

2) Mechanics of Laminated Composite Plates and Shells:Theory and Analysis, J. N. Reddy,
CRC Press, 2nd Edition, ISBN 9780849315923.

3) Composite Materials and Their Use in Structures, Jach R. Vinson, Tsu-Wei Chou,
Applied Science Publishers, London, 1975.

4) Beams, Plates and Shells, L. Hamilton Donnell, McGraw-Hill, 1976.

Planned Learning Activities and Teaching Methods

This course is taught in a lecture, class presentation, problem-session and discussion format. All students are expected to attend both the lecture and problem-session, discussion so they are also expected to solve on their own and submit homework in time.

Assessment Methods

SORTING NUMBER SHORT CODE LONG CODE FORMULA
1 MTE 1 MIDTERM EXAM 1
2 MTE 2 MIDTERM EXAM 2
3 ASG ASSIGNMENT
4 FIN FINAL EXAM
5 FCG FINAL COURSE GRADE MTE 1 * 0.20 + MTE 2 * 0.20 + ASG * 0.10 + FIN * 0.50
6 RST RESIT
7 FCGR FINAL COURSE GRADE (RESIT) MTE 1 * 0.20 + MTE 2 * 0.20 + ASG * 0.10 + RST * 0.50


*** Resit Exam is Not Administered in Institutions Where Resit is not Applicable.

Further Notes About Assessment Methods

None

Assessment Criteria

To be announced.

Language of Instruction

English

Course Policies and Rules

To be announced.

Contact Details for the Lecturer(s)

Doç. Dr. Çınar YENI, cinar.yeni@deu.edu.tr
Dokuz Eylül University, Faculty of Engineering, Department of Mechanical Engineering
Phone: 0 232 3019209

Office Hours


The lecturer will inform her suitable office hours on her weekly schedule on the office door.

Work Placement(s)

None

Workload Calculation

Activities Number Time (hours) Total Work Load (hours)
Lectures 12 3 36
Preparations before/after weekly lectures 12 5 60
Preparation for midterm exam 2 15 30
Preparation for final exam 1 20 20
Preparing assignments 2 15 30
Preparing presentations 1 15 15
Final 1 3 3
Midterm 2 3 6
TOTAL WORKLOAD (hours) 200

Contribution of Learning Outcomes to Programme Outcomes

PO/LOPO.1PO.2PO.3PO.4PO.5PO.6PO.7PO.8PO.9PO.10PO.11PO.12PO.13PO.14
LO.15352534
LO.2511352533
LO.3532251534
LO.4522251524
LO.5511252534
LO.6533351524