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fonseh
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why theta_A multiply by L , we will get moment ? what is theta_A actually ? I'm confusedsakonpure6 said:The author takes moment using the conjugate beam, and at point A there is a shear force acting downward which is equal to the rotation of A in the real beam.
fonseh said:why theta_A multiply by L , we will get moment ? what is theta_A actually ? I'm confused
why? Can you explain further ? Why are they equal ?sakonpure6 said:Conjugate beam theory tells us that the shear force in the conjugate beam is the rotation in the real beam.
fonseh said:why? Can you explain further ? Why are they equal ?
Can you explain further ? It's not explained in my modulesakonpure6 said:review conjugate beam theory, you will find the answer there.
http://www.ce.memphis.edu/3121/notes/notes_08b.pdfsakonpure6 said:Theta A is the angular rotation in the real beam. Conjugate beam theory tells us that the shear force in the conjugate beam is the rotation in the real beam.
In the conjugate beam, moment = shear force A * distance to B = Theta A * L
fonseh said:http://www.utsv.net/conjugate_beam.pdf
Do you mean this one ?
I still can't understand why w (force per unit length ) = M / EI .?
The moment about a point on a beam, also known as the bending moment, is a measure of the force created by a load acting on a beam, causing it to bend at a specific point. It is a crucial concept in structural engineering and mechanics.
The moment about a point on a beam is calculated by multiplying the force acting perpendicular to the beam by the distance from the point to where the force is applied. The resulting unit is usually pound-force times inches (lb-in) or Newton-meters (Nm).
The direction of the moment about a point on a beam is determined by the direction of the force acting on the beam. If the force is acting upwards, the moment will be in a clockwise direction, and if the force is acting downwards, the moment will be in a counterclockwise direction.
The moment about a point on a beam is significant because it indicates the amount of stress and deformation that the beam will experience at a specific point. It is essential to consider when designing and analyzing structures to ensure they can support the expected loads.
The distribution of loads along a beam affects the moment about a point on the beam. A concentrated load at a specific point will result in a higher moment, while a distributed load along the entire beam will result in a more evenly distributed moment. This distribution of moment affects the overall strength and stability of the beam.