if you look carefully, those are not the forces used when making an imaginary cutfonseh said:
the 4.5k load is the resultant sum of the applied loads, so you must not double count these loads.
but a cut after the 1k load is not the point of absolute maximum moment.
do you mean we just need to make an imaginary cut up to 1.5 k because the author assume the max moment will occur under the 1.5k load ?PhanthomJay said:
yesfonseh said:
Actually how did the author know that the absolute max moment occur under the 1.5k load ? why not the 1k load or 2k load ? Why did the author didnt show the calculation for the 1k load ?PhanthomJay said:
Author did not know. The point of max moment occurs under one of the concentrated loads near the resultant location. The author had to check both the 1.5 and 2k load locations to find out which controlled for max moment. The moment at the 1k load point did not have to be checked because it was not near the resultant.fonseh said:
Absolute max shear and moment refer to the maximum shear force and bending moment that a structural element experiences at a specific point. These values represent the highest possible load that the element can withstand without failure.
Determining the absolute max shear and moment is crucial in structural engineering as it helps ensure the safety and stability of a structure. By knowing these values, engineers can design and construct structures that can withstand the maximum expected loads.
Absolute max shear and moment can be calculated using mathematical equations and formulas that take into account the type of structural element, the applied loads, and the support conditions. Computer software programs are also commonly used to determine these values.
The absolute max shear and moment of a structural element can be affected by various factors, including the type and magnitude of applied loads, the structural material and its properties, the geometry and dimensions of the element, and the support conditions.
To control or reduce absolute max shear and moment, engineers can make changes to the design, such as altering the geometry or dimensions of the structural element, using different materials with higher strength, or providing additional support. Additionally, proper maintenance and inspection can help prevent excessive loads and potential failures.
