Submodeling (Breakout Models) in FEA

For example, in this orthogrid pressure plate, you can use a breakout model (or submodel) to access the stress concentration in the specific joint shown below. If you have a large model, it is impractical (and perhaps impossible) to apply a high-fidelity mesh to the entire model. However, without a … Read More

Generating Aerodynamic Loads | Hand Calculations vs. Aeroelasticity

Within the Aerospace Engineering community, there is an entire sub-discipline devoted to understanding the dynamics of a system and generating loads (propulsive, inertial, aerodynamic, etc). In smaller companies, engineers often need to wear multiple hats, and the lines between classical stress analysis and loads and dynamics analysis begin to blur. … Read More

Midsurfacing: Using Shell Elements

If you work with thin-walled solids, using a midsurface shell model can reduce the degrees of freedom in your model by factors of ten and save hours of time in your analysis and postprocessing. But you’re probably thinking: “Isn’t creating a midsurface model just going to add more time to … Read More