Engineering
Engineering, 17.12.2019 20:31, majailaharris200

To analyze statically indeterminate frames using the moment-distribution method of analysis. the moment-distribution method for frames with no sidesway follows the same procedure as that given for beams. repeat this process of locking and unlocking joints until the desired degree of accuracy is obtained. the process should be stopped with no carry-over of the last moment. finally, add each column of fems, distributed moments, and carry-over moments. these sums represent the internal moments at each joint. if done correctly, moment equilibrium at the joints will be achieved. the process for frames is very similar to the process for beams. the main difference is that there can be more than two members attached to a joint. the distribution factors for each joint are still determined using df=k∑k. as before, the distribution factor is 0 for a fixed end, 1 for a pin or roller support end, and 0 for a cantilever end. a beam fixed at both ends, subjected to a uniform distributed load (w) over its entire length has fem=wl212 at both ends. a beam pinned at the far end, subjected to a uniform distributed load over its entire length has fem=wl28 at the fixed end.

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