This video showcases how kdFlex can be used to simulate a system with constraints and flexible bodies as well as how kdFlex can be used to post-process and obtain stress data vs. time for a flexible body. The suspension system shown has one link replaced by a flexible body (the one that changes color over time). First, a simulation was run that logged the modal coordinates, modal velocity coordinates, and modal acceleration coordinates of the link vs. time. Then, FEMBridge was used to post-process this data and calculate the stress vs. time on the link. Finally, the simulation was re-run using this data to color the link based on the stress along the length. It is difficult to see in the video, as the differences are very minor, but the stress is actually slightly different along the entire length of the beam. The tire mesh can be found here.