CTC / MTC 222 Strength of Materials

1
CTC / MTC 222Strength of Materials

• Review
• Chapters 1 - 3

2
Test 1 10/18/11

• 20 of grade
• Graded on the basis of 20 points in increments of
  ½ point
• Open book plus two sheets of notes
• Equations definitions procedures no worked
  examples
• Work problems on separate sheets of engineering
  paper
• Hand in test paper answer sheets and notes
  stapled to back of answer sheets
• Will allow 2 hours

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Course Objectives

• To provide students with the necessary tools and
  knowledge to analyze forces stresses strains
  and deformations in mechanical and structural
  components.
• To help students understand how the properties of
  materials relate the applied loads to the
  corresponding strains and deformations.

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Chapter One Basic Concepts

• SI metric unit system and U.S. Customary unit
  system
• Unit conversions
• Basic definitions
• Mass and weight
• Stress direct normal stress direct shear stress
  and bearing stress
• Single shear and double shear
• Strain normal strain and shearing strain
• Poissons ratio modulus of elasticity in tension
  and modulus of elasticity in shear

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Chapter Two Design Properties

• Basic Definitions
• Yield point ultimate strength proportional
  limit and elastic limit
• Modulus of elasticity and how it relates strain
  to stress
• Hookes Law
• Ductility - ductile material brittle material

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Chapter Three Direct Stress

• Basic Definitions
• Design stress and design factor
• Understand the relationship between yield stress
  and design stress allowable stress or working
  stress
• Understand the relationship between design
  factor factor of safety and margin of safety
• Design / analyze members subject to direct stress
• Normal stress tension or compression tensile
  stress on gross area tensile stress on net area
• Shear stress shear stress on a surface single
  shear and double shear on fasteners
• Bearing stress bearing stress between two
  surfaces bearing stress on a fastener

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Chapter Three Axial Deformation and Thermal
Stress

• Elastic deformation of a member due to an axial
  load
• Design axially loaded members to limit their
  deformation
• Define coefficient of thermal expansion
• Thermal deformation due to temperature change if
  a member is unrestrained
• Thermal stress in a member due to temperature
  change if the member is restrained
• Stress in components of a composite structure
  made of more than one material