Forces, Mechanisms and Structures (Junior Cert Wood Technology): Flashcards
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Practise the cards
12 cards from this deck
4 main forces affecting wooden structures
4 main forces affecting wooden structures
Tension, compression, shear, torsion
Tension force effect on material
Tension force effect on material
Stretches or lengthens material
Compression force effect on material
Compression force effect on material
Compresses or shortens material
Shear force effect on material
Shear force effect on material
Causes parts to slide past each other
Torsion force effect
Torsion force effect
Twisting force around axis
Where tension occurs in woodworking
Where tension occurs in woodworking
In beams or planks under pulling forces
Where compression is important in wood structures
Where compression is important in wood structures
In columns or pillars supporting vertical loads
Forces mortise & tenon joints combat
Forces mortise & tenon joints combat
Shear and tension
Forces dovetail joints resist
Forces dovetail joints resist
Tension and shear forces
Effect of ignoring shear forces in bridges
Effect of ignoring shear forces in bridges
Bridge can sway and eventually fall
Effect of neglecting torsion in circular columns
Effect of neglecting torsion in circular columns
Weakens ability to hold shape over time
Techniques to reduce effects of force
Techniques to reduce effects of force
Lamination, metal brackets, special joint designs