While Keyframe based animation allows the user to create animations for simple systems. It is very difficult to use it to create animations for complex dynamic systems like Robots.
For similar systems, defining constraints and utilizing the dynamic simulation analysis for creating the animation saves the user a significant amount of time, and allow for the creation of advanced animations not achievable easily by utilizing Keyframe based animation.
The following is an example created and rendered using SimLab Composer mechanical edition.
The following workflow description shows the advantage gained by using dynamic simulation in creating the animation.