Скачать или смотреть Optimization Under Uncertainty - 3 Bar Truss, Part 2 of 2 - Sandia Dakota, FEA, MSC Nastran

This example details the process to configure and perform an optimization under uncertainty (OUU) for a 3-bar truss. Also, details are included regarding how to interpret the OUU results and final probabilities of failure. The uncertainty quantification (UQ) is performed via the mean value first-order second-moment (MVFOSM) method. This is part 2 of a 2-part tutorial.

The optimization problem statement is to minimize the mean mass while ensuring the stress constraints have a probability of failure no greater than 5%.

MSC Nastran is used to perform the finite element analysis and acquire responses and gradients. Sandia Dakota is used to perform the UQ and OUU. The SOL 200 Web App is used to configure the OUU and will automatically exchange responses and gradients between MSC Nastran and Sandia Dakota.

PDF Tutorial: http://localhost:8080/pot-of-gold/ws_optimization_under_uncertainty_dsoug1_part_2_of_2.pdf