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Mechanics of Materials and Constructions. P2 ☑️
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Stability
Stability is the property of the structure to keep its initial position of equilibrium
The deflection is measured from the original neutral surface to the neutral surface of the deformed beam
The polar moment of inertia for а circle is:
The normal stress σ by bending is equal zero at center of cross-section of the beam
The moment of inertia of а rectangle about an axis x is:
The angle θ is defined as the deflection of the beam
For a given column the coefficient of lengthening
In the case of the off-center acting of longitudinal force, the stresses are determined from the dependence: