Clarkson University

ES 222: Strength of Materials

Spring 2007

Section 01/10

 

Catalog Description: Elementary analysis of the strength and deformation of deformable bodies; stress and strain at a point, Mohr's circle, axial loads, flexure, torsion, deflections and column action; Introduction to design concepts.   

Prerequisite:           ES220 Statics

Objectives:               1. To study the behavior and stability of deformable bodies under external loads.

2. To use the principles of equilibrium to calculate deformations, stresses and strains in a body due to applied loads.

 

Instructor:               Ayman Ababneh, E-mail: ababneh@clarkson.edu

Webpage: http://www.clarkson.edu/~aababneh/

                                    Office: 236 Rowley Laboratories; Phone: 315-268-4435

 

Course Webpage:  http://www.clarkson.edu/class/es222/

 

Office Hours:          Monday 10:00-11:30, Wednesday 03:00-04:30, and Thursday 10:00-11:30        

or by appointment

 

Time and Place:      Lectures: Monday and Wednesday, 2:00-2:50 CAMP 177

                                    Laboratories and Workshops: Thursday, 12:30-2:20 CAMP 176

 

Textbook:                 [Required] “Mechanics of Materials”, Roy R. Craig, Jr., John Wiley & Sons, New York, 2nd Edition, 1999. [ISBN: 0-471-33176-7]

Requirements:

Attendance to class and laboratory sessions is mandatory. The overall grade will be calculated on the basis of homework, workshop assignments and lab reports, two hourly exams and final exam. The instructor will define the due date for the homework assignments and lab reports, which are to be handled at the beginning of the respective class. Problems assigned during the laboratory or workshop period will be collected at the end of period. Students are required to work on the workshop problems in a group but each student is responsible for turning in a complete solution for the workshop assignment. Missed exam or homework will be permitted to make up only when appropriate documentation is provided explaining your absence. The final exam will be cumulative but will emphasize topics not covered on prior exams.

 

Evaluation: The final grades for the course will be based on the following percentages

 

                        1.         Exam I                                                                        25%

                        2.         Exam II                                                                      25%

                        3.         Homework, Workshops and Quizzes:                    20%

                        4.         Final Exam                                                                30%

 

Grade Scale: A: 90% or above; B+: below 90% and 85% or above; B: below 85% and 80% or above; C+: below 80% and 75% or above; C: below 75% and 70% or above; D+: below 70% and 65% or above; D: below 65% and 60% or above; F: below 60%.

 

 

 

 

Exam Dates:

Exam I:                       Thursday February 22nd     

Exam II:                     Thursday April 5th                

Final Exam:               Wednesday May 2nd        3:15-6:15pm            160 Science Center Lecture

 

Relationship between Course objectives, Outcomes and Assessment:

 

 

Course Objectives

CEE outcomes addressed

(see CEE Handbook)

Evaluation methods

(see above)

To study the behavior and stability of deformable bodies under external loads

1a, 1b, 1d, 1g

1, 2, 3 and 4

To use the principles of equilibrium to calculate deformations, stresses and strains in a body due to applied loads

1a, 1b, 1d, 1g

1, 2, 3 and 4

 

Course Outline

1.      Introduction (1 week)

Fundamental Concepts of Strength of Materials; Review of Static Equilibrium

2.      Basic concepts: stresses and strains (2 weeks)

Normal Stress; Extensional and Thermal Strain; Stress-Strain Diagrams; Elasticity and Plasticity; Linear Elasticity; Shear Stress and Shear Strain; Allowable Stress Design; Stresses on Inclined Plane; General Definitions of Stress and Strain; Generalized Hooke’s Law

3.      Axial Deformation (2 weeks)

Axial Deformation of Uniform and Non-Uniform Bars; Elastic Behaviors of Axially Loaded Members; Statically Indeterminate Structures; Temperature Effect

1.      Torsion (1 week)

Elastic Torsion of Circular Bars; Analysis of Statically Determinate and Indeterminate Uniform Torsion Members

2.      Equilibrium of Beams (1 weeks)

Equilibrium of Beams; Shear Force and Bending Moment Diagrams

3.      Stresses in Beams (2 weeks)

Flexural Stress in Linear Elastic Beams; Bending of Composite Beams; Shear Stress in Beams

4.      Beam Deflection (1 week)

Differential Equations of Deflection Curve; Deflection of Beams; Statically Indeterminate Beams

8.      Transformations of Stress and strain (2 weeks)

Transformation of Plane Stress; Principal Stresses and Maximum Shear Stress; Mohr’s Circle for Plane Stress; Mohr’s Circle for Strain

9.      Stresses Due to Combined Loads (1 week)

Stresses in Frame Members Due to Combined Loads

10.  Buckling of Columns (1 week)

Ideal Columns with Pin-Ended Supports; Columns with Various Types of End Support

Miscellaneous

1.      Please bring your textbook to class (particularly on Thursdays for the workshop).  We will often refer to figures or problems in the text.

2.      Students are expected to read the appropriate sections in the textbook prior to class.  A reading schedule will be provided for this purpose.  The instructor reserves the right to give short reading quizzes at the beginning of class.

3.      Homework problems should be neat, professional and well organized.  The problem-solving procedure described in Sec. 1.3 of the textbook should be followed. Points will be deducted for homework that does not meet these standards.