Probabilistic assessment of uncertain adaptive hybrid composites
Abstract
Adaptive composite structures using actuation materials, such as piezoelectric fibers, were assessed probabilistically utilizing intraply hybrid composite mechanics in conjunction with probabilistic composite structural analysis. Uncertainties associated with the actuation material as well as the uncertainties in the regular (traditional) composite material properties were quantified and considered in the assessment. Static and buckling analyses were performed for rectangular panels with various boundary conditions and different control arrangements. The probability density functions of the structural behavior, such as maximum displacement and critical buckling load, were computationally simulated. The results of the assessment indicate that improved design and reliability can be achieved with actuation material.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- June 1994
- Bibcode:
- 1994STIN...9433951S
- Keywords:
-
- Buckling;
- Composite Structures;
- Hybrid Composites;
- Static Tests;
- Structural Analysis;
- Critical Loading;
- Probability Density Functions;
- Rectangular Panels;
- Structural Strain;
- Structural Mechanics