NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Probabilistic Structural Analysis ProgramNASA/NESSUS 6.2c is a general-purpose, probabilistic analysis program that computes probability of failure and probabilistic sensitivity measures of engineered systems. Because NASA/NESSUS uses highly computationally efficient and accurate analysis techniques, probabilistic solutions can be obtained even for extremely large and complex models. Once the probabilistic response is quantified, the results can be used to support risk-informed decisions regarding reliability for safety-critical and one-of-a-kind systems, as well as for maintaining a level of quality while reducing manufacturing costs for larger-quantity products. NASA/NESSUS has been successfully applied to a diverse range of problems in aerospace, gas turbine engines, biomechanics, pipelines, defense, weaponry, and infrastructure. This program combines state-of-the-art probabilistic algorithms with general-purpose structural analysis and lifting methods to compute the probabilistic response and reliability of engineered structures. Uncertainties in load, material properties, geometry, boundary conditions, and initial conditions can be simulated. The structural analysis methods include non-linear finite-element methods, heat-transfer analysis, polymer/ceramic matrix composite analysis, monolithic (conventional metallic) materials life-prediction methodologies, boundary element methods, and user-written subroutines. Several probabilistic algorithms are available such as the advanced mean value method and the adaptive importance sampling method. NASA/NESSUS 6.2c is structured in a modular format with 15 elements.
Document ID
20100019608
Acquisition Source
Glenn Research Center
Document Type
Other - NASA Tech Brief
Authors
Pai, Shantaram S.
(NASA Glenn Research Center Cleveland, OH, United States)
Chamis, Christos C.
(NASA Glenn Research Center Cleveland, OH, United States)
Murthy, Pappu L. N.
(NASA Glenn Research Center Cleveland, OH, United States)
Stefko, George L.
(NASA Glenn Research Center Cleveland, OH, United States)
Riha, David S.
(Southwest Research Inst. Dayton, OH, United States)
Thacker, Ben H.
(Southwest Research Inst. Dayton, OH, United States)
Nagpal, Vinod K.
(N and R Engineering and Management Services Parma Heights, OH, United States)
Mital, Subodh K.
(Toledo Univ. OH, United States)
Date Acquired
August 24, 2013
Publication Date
May 1, 2010
Publication Information
Publication: NASA Tech Briefs, May 2010
Subject Category
Man/System Technology And Life Support
Report/Patent Number
EW-18229-1
Distribution Limits
Public
Copyright
Public Use Permitted.
No Preview Available