Functional Mapping Approach to Incorporate Epistemic Uncertainty in System Reliability Assessment
Abstract
A functional mapping approach was developed to include both aleatory and epistemic uncertainty sources in reliability and uncertainty sensitivity analyses with multi-disciplinary time-dependent simulations. Adaptive surrogate modeling techniques were developed for problems with spatial and temporal variability, coupled multi-disciplinary models, and reliability analysis with multiple limit states. The prediction of model error in untested configurations was achieved by focusing on model form error in the governing equation instead of discrepancy in the model output. The methods were illustrated for a hypersonic vehicle panel under aero-thermo-mechanical loading, using four coupled disciplinary models.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 27, 2019
- Accession Number
- AD1096927
Entities
People
- Sankaran Mahadevan
Organizations
- Vanderbilt University