Structures (Junior Cert Engineering): Flashcards
📚Flashcards
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13 cards from this deck
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Practise the cards
13 cards from this deck
Primary purpose of structures
Primary purpose of structures
Support and carry loads without failing or collapsing
Number of main force types acting on structures
Number of main force types acting on structures
Five
Compression force effect
Compression force effect
Pushes inward, trying to squash or crush
Tension force effect
Tension force effect
Pulls outward, trying to stretch or tear apart
Bending force effect
Bending force effect
Causes members to curve or deflect
Shear force effect
Shear force effect
Acts parallel to surface, slides one part past another
Torsion force effect
Torsion force effect
Twisting forces that rotate one end relative to the other
Static loads characteristic
Static loads characteristic
Remain constant and don't change over time
Dynamic loads characteristic
Dynamic loads characteristic
Change with time, include movement or vibration
Advantage of hollow sections
Advantage of hollow sections
Rigid and lightweight
Why triangles used in structures
Why triangles used in structures
Naturally rigid shapes, cannot deform without breaking
Only naturally stable polygon
Only naturally stable polygon
Triangle
Load paths definition
Load paths definition
How forces travel through structure to foundations