In the Newton-Raphson lecture video, we saw that iterations are carried out until the calculated internal forces converge to the applied forces, within a given tolerance. Once the solution converges, the solution is known as the "force converged solution"; the user-defined tolerance is called the "convergence criteria." Using Ansys Software, we can see this process of iterating toward a converged solution.

We will demonstrate this iterative process on the simple problem of the bending of a fishing pole. In the video below we see a simple fishing pole bending while catching a fish in the sea.

Lecture

Now, let's see how Ansys simuations implement this process during the solution and how we relate to the terms discussed in the last lecture: