Як розрахувати Shear Stress
Що таке Shear Stress?
Shear stress is stress from forces parallel to a surface, causing internal sliding. It's critical for joint design and fastener selection.
Формула
Calculate: τ = V/A where V is shear force and A is area
- V
- V value — Variable used in the calculation
- A
- A value — Variable used in the calculation
Покрокова інструкція
- 1Calculate: τ = V/A where V is shear force and A is area
- 2For beams: τ = 1.5V/A (rectangular cross-section)
- 3Results show stress intensity and safety margins
Розв'язані приклади
Введення
V = 50 kN, A = 0.01 m² (100×100 mm)
Результат
τ = 5 MPa (low for steel)
Safe for typical steel
Поширені помилки
- ✕Using average stress instead of accounting for concentration
- ✕Neglecting shear in fastener design
Часті запитання
How is shear stress different from normal stress?
Normal stress acts perpendicular to surface, shear acts parallel. Materials handle shear differently.
Where is shear stress highest in a beam?
Maximum shear occurs at the supports; minimum (zero) at points of zero shear force.
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