Nastran performs the heavy lifting by calculating the — KIcap K sub cap I KIIcap K sub cap I cap I end-sub KIIIcap K sub cap I cap I cap I end-sub
The process of simulating crack propagation or fatigue life generally follows these three stages: 1. Pre-Processing in MSC Patran Crack Patran Nastran
Before running a simulation, you must define the physical characteristics of the crack: Nastran performs the heavy lifting by calculating the
: A popular method in Nastran for calculating Energy Release Rates, often used for delamination in composites. : Nastran can use the results of a
: Visualizing "Damage" or "Log of Life" to see which parts of the structure will fail first.
: Nastran can use the results of a static or dynamic load to predict the number of cycles ( ) until failure based on S-N or E-N curves. 3. Post-Processing and Visualization
Once the solver finishes, you return to Patran to interpret the results: