PCC/ CCOG / ENGR

Course Content and Outcome Guide for ENGR 213

Course Number:
ENGR 213
Course Title:
Strength of Materials
Credit Hours:
4
Lecture Hours:
30
Lecture/Lab Hours:
20
Lab Hours:
0
Special Fee:
 

Course Description

Relationships between stress and strain in deformable solids are studied. Analysis is applied to axially-loaded members, circular shafts, beams and columns. Combined stresses, statically indeterminate systems and properties of structural materials are included. Prerequisite: ENGR 211. Audit available.

Intended Outcomes for the course

Upon successful completion of this course, the student will have satisfactorily accomplished the goals and objectives listed in this course content guide.  Course content guides are developed by collegewide Subject Area Curriculum Committees and approved by management.

Course Activities and Design

Emphasis is on problem-solving using the three basic tools of mechanics, namely:

     a.  the equilibrium relationship
     b.  the geometric compatibility relationship
     c.  the force-displacement relationship

Principles and techniques are presented through lectures and demonstrations.  Students develop problem-solving skills during working sessions under the guidance of instructor.  Problems are assigned on a weekly basis for practice.  Practical applications are made throughout the course by introducing many typical engineering design problems involving beams, shafts, columns and pressure vessels.

Outcome Assessment Strategies

Student progress is measured by performance on homework and on examinations covering appropriate types of problems. Details will be provided by the instructor at the initial class meeting.

Course Content (Themes, Concepts, Issues and Skills)

 1.0  ANALYSIS OF STRESS AND STRAIN

Instructional Goal:

To understand the concepts of stress and strain and their use in the
analysis of structures.

Objectives:    

     1.1.0 Define stress and strain at a point under uniaxial and
           general loading conditions.
     1.2.0 Apply these concepts in the solution of problems involving  
           simple structures.
     1.3.0 Compare the mechanical properties of a ductile  material
           such as steel with those of a brittle material such as         
           concrete, emphasizing design implications.
     1.4.0 Determine principal planes, principal stresses and maximum   
           shear stress under given loading conditions using Mohr's       
           circle as well as stress transformation  equations.
     1.5.0 Analyze the state of stress of a material under load, using     
           experimental data obtained from strain gages.


                        2.0  BENDING

Instructional Goal:

To understand material behavior under a condition of pure bending.

Objectives:

     2.1.0 Construct shear and moment diagrams for variously loaded and
           supported beams.
     2.2.0 Determine normal and shear stresses in pure bending of
           beams in the elastic range.
     2.3.0 Analyze stresses in the bending of beams made of several
           materials, including reinforced concrete.
     2.4.0 Determine the maximum deflection of a flexurally loaded beam
           using several methods, including:
           2.4.1  Integration of the differential equation of the elastic
                  curve.
           2.4.2 Singularity functions
           2.4.3 Method of superposition


                        3.0  TORSION

Instructional Goal:

To understand material behavior under a condition of pure torsion.

Objectives:

     3.1.0 Calculate shear stress and strain distribution in solid and
           hollow round members under torsional loading conditions.
     3.2.0 Design shafts for various conditions of power transmission
           and rotational speed.


                    4.0  COMBINED STRESSES

Instructional Goal:

To analyze the effect of various loading combinations on a material.

Objectives:

     4.1.0 Determine principal stresses, planes and maximum shear
           stress under various combinations of axial, torsional,
           bending, and shearing loads on structures.
     4.2.0 Determine factors of safety under specific combined  stress
           conditions on the basis of various failure theories,
           including:
           4.2.1 Maximum-Normal-Stress Theory
           4.2.2 Maximum-Shear-Stress Theory
           4.2.3 Maximum-Normal-Strain Theory


                    5.0  COLUMNS AND PRESSURE VESSELS

Instructional Goal:

To understand analytic methods used in connection with the structural
design of columns and pressure vessels.

Objectives:

     5.1.0 Apply Euler's Formula to calculate axial buckling load  for
           columns of varying end conditions and materials.
     5.2.0 Apply thin-walled pressure vessel formulas to determine
           transverse and longitudinal membrane stresses in vessels of
           various configurations.


               6.0  STATICALLY INDETERMINATE STRUCTURES

Instructional Goal:

To understand methods of analysis used in treating statically
indeterminate loading conditions.

Objectives:

     6.1.0 Apply the concept of geometric compatibility to analyze
           structural problems involving:
           a. Conditions of thermal stress
           b. Redundant supports or members


                    7.0  COMPUTER APPLICATIONS

Instructional Goal:

To integrate the use of the computer or programmable calculator into the
solution of strength of materials problems.

Objectives:

     7.1.0 Demonstrate on selected homework assignments the ability  to
           solve strength of materials problems with a computer or
           programmable calculator.