The maximum obtained finite element rotation was 0.47° which occurred at mid span and on the bridge deck side that does not have extra diaphragms.
This method is simple to be used for preliminary analysis and it uses a Steinman Baker coefficient to extrapolate the percentage of shear force and moment that is present in the mid span and the side span.
The samples were collected through grab sampling from different locations, mainly from the mid span and end terminals of the rotary drum composter with a compost sampler to minimize disturbance of the adjacent materials.
Laboratory tests are made on samples taken from the most critical fatigue details on a region of high stress fluctuation (mid span) and the same details at a stagnant region (supports location) and compared.
About 500 g of homogenized samples were collected from five different locations, mostly at the mid span and ends of the pile by compost sampler without disturbing the adjacent materials in the pile on days 0, 3, 6, 9, 12, 15, 18, 21, 24, 27, and 30 after turning.
Specifically, the two AMBs located at the two ends of the rotor are used as supporting bearings, while the other two located at the rotor mid span and quarter span are used to emulate the generator negative stiffness and gyroscopic effects on the rotor dynamics caused by the flywheel disk.
