Video : 60 minutes presentation and curated Q and A Over-constrained, under-constrained or somewhere in the middle with FEA! Boundary conditions are probably the most difficult aspect of static FEA Underconstrained models: It is easy to forget to apply adequate constraints – Rigid Body Modes result! Over constraining is more subtle: The physics of the […]

## Session 1: St Venant’s Principle

Session 1: St Venant’s Principle 30 minutes presentation, 30 minutes curated Q and A This principle is often quoted in FEA. It is a very generalized statement, but what does it mean and how can we use it in practice? I explore the background to the principle and discuss how it can be used […]

## Session 3: Free Body Diagrams

Session 3: Free Body Diagrams – what are they and why do they go wrong? 30 minutes presentation, 30 minutes curated Q and A Free body diagrams are used in structural analysis to try to reduce the problem to its simplest description. Where does the load get applied and where does the load get […]

## Session 4: Mohr’s circle

Session 4: Why is Mohr’s circle so disliked? Giving it another chance … 30 minutes presentation, 30 minutes curated Q and A Mohr’s circle seems to be a very unpopular topic in structural mechanics courses! I think it is because it seems to be: Very arcane Very procedural Very confusing Never used in practical […]

## Session 2: FEA quick sanity checks

Session 2: FEA quick sanity checks 30 minutes presentation, 30 minutes curated Q and A Making sure we don’t fall into the trap: “Garbage in – Garbage out” is vital in FEA. I show some sanity checks we can use in static and dynamic analysis to quickly make sure we are on the right […]

## Session 5: Nonlinear buckling cheats

Session 5: Why is cheating needed in nonlinear buckling analysis Video 1: 40 minutes presentation Video 2, 25 minutes curated Q and A The first time I did a nonlinear buckling analysis; I set up a cylinder model, applied the load – and waited. What a letdown! The cylinder just compressed, went […]