The mechanism calculations were performed and a custom motor is required to satisfy the low speed and high torque requirements of the bridge. The mechanical parts and results comply with AASHTO standards for a safe and efficient bridge design. A final cost analysis is compiled for the new projected cost of the full sized bridge. This is based on the final cost of all members and the estimated cost of the mechanical parts, construction, and other necessary labor and parts for the pedestrian bridge.
Monthly Archives: May 2017
Progress Report 7
Modal analysis was performed on the bridge in ANSYS APDL with frequency results above 3 Hz, which is an AASHTO requirement. The first mode is shown in the figure with a fundamental frequency of 4.46. This frequency guarantee that the bridge will not collapse due to resonance with the natural frequency.
This finalized the original member selection and member connection designs are being calculated for each connection of the truss.