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Beam Deflection and Stress Formula and Calculators
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Stress at specific point
Stress at the support (must be constant cross section)
Deflection between support and load
Deflection beyond load
Deflection at load
Maximum deflection at end
Where:
| E = |
Modulus of Elasticity |
psi |
(N/m2) |
| I = |
Moment of Inertia |
in4 |
(m4) |
| W = |
Load |
lbs |
(N) |
| s = |
Stress at the cross-section being evaluated |
lbs/in2 |
(N/m2) |
| y = |
Deflection |
inches |
(m) |
| l = |
Some distance as indicated |
inches |
(m) |
| x = |
Some distance as indicated |
inches |
(m) |
| v = |
Some distance as indicated |
inches |
(m) |
| b = |
Some distance as indicated |
inches |
(m) |
| Z = |
section modulus of the cross-section of the beam |
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| Z = |
I ÷ distance from neutral axis to extreme fiber
(edge) |
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