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4 cards from this section. Quick, good the night before a test.
What happens to fibers below the neutral line when a beam is subjected to pure bending?
Consider how fibers react differently based on their position relative to the neutral line.
Define the neutral line.
Think about what happens to the length of fibers along this line.
What is the longitudinal strain experienced by fibers above the neutral line?
Think about the deformation effects of bending on different parts of the beam.
True or False: The neutral line experiences maximum elongation under pure bending.
Reflect on what happens to fibers at this specific line.
A rectangular beam with a height of 20 cm and width of 10 cm is subjected to a bending moment that results in a radius of curvature of 10 m. Calculate the longitudinal strain at a point located 5 cm above the neutral line.
Convert all measurements to the same unit (meters) before calculation.
If the total bending moment remains consistent on a beam while increasing the height of the beam to 40 cm, how does this affect longitudinal strain at a point 10 cm from the neutral line?
Remember that strain is linear with distance from the neutral line. Higher beams will show greater strain at the same location from the neutral line.
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