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Structural Stresses

Structural Stresses. 8 th Grade Industrial Technology. Objective. To identify the four structural stresses as they act on structures. Compression. Torsion. Tension. Shearing. Structural Stresses Table of Contents. Compression Tension Torsion Shearing.

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Structural Stresses

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  1. Structural Stresses 8th Grade Industrial Technology

  2. Objective • To identify the four structural stresses as they act on structures Compression Torsion Tension Shearing

  3. Structural StressesTable of Contents • Compression • Tension • Torsion • Shearing Click to Select a Specific Stress

  4. Compression Definition • Forces that cause material to be pushed together • Causes materials to buckle Back to Table of Contents

  5. Compression Example Click here then select squeezing force

  6. Tension Definition • Forces that cause material to be pulled apart • Tension causes materials to snap Back to Table of Contents

  7. Tension Example • Cables are under tension stress Tension Tension Click here then select stretching force

  8. Torsion Definition • A force that causes materials to twist and bend Back to Table of Contents

  9. Torsion Stress in Action Tacoma Narrows Bridge in high wind before it collapsed (click below for video) Click here then select twisting force

  10. Shear Definition • A stress that causes materials to tear or slide by each other Back to Table of Contents

  11. Shear Example • Shear stress causes materials to tear apart Click here then select sliding force

  12. Review Table

  13. Structural Stresses Question • Which type of stress would you apply to your pencil if you wanted it to break it? Why would you choose this stress?

  14. Structural Stresses Answer • Shear stress • Shear stress would be the easiest stress you could apply to break your pencil • A pencil would require larger amounts of compression, tension, or torsion than could be applied by hand.

  15. Resource • Brusic, S., Fales, J., & Kuetemyer, V. (2004). Technology today and tommorow. New York: Glencoe.

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