NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
training knowledge bots for physics-based simulations using artificial neural networksMillions of complex physics-based simulations are required for design of an aerospace vehicle. These simulations are usually performed by highly trained and skilled analysts, who execute, monitor, and steer each simulation. Analysts rely heavily on their broad experience that may have taken 20-30 years to accumulate. In addition, the simulation software is complex in nature, requiring significant computational resources. Simulations of system of systems become even more complex and are beyond human capacity to effectively learn their behavior. IBM has developed machines that can learn and compete successfully with a chess grandmaster and most successful jeopardy contestants. These machines are capable of learning some complex problems much faster than humans can learn. In this paper, we propose using artificial neural network to train knowledge bots to identify the idiosyncrasies of simulation software and recognize patterns that can lead to successful simulations. We examine the use of knowledge bots for applications of computational fluid dynamics (CFD), trajectory analysis, commercial finite-element analysis software, and slosh propellant dynamics. We will show that machine learning algorithms can be used to learn the idiosyncrasies of computational simulations and identify regions of instability without including any additional information about their mathematical form or applied discretization approaches.
Document ID
20150000596
Document Type
Technical Memorandum (TM)
Authors
Samareh, Jamshid A.
(NASA Langley Research Center Hampton, VA, United States)
Wong, Jay Ming
(Massachusetts Univ. Amherst, MA, United States)
Date Acquired
January 16, 2015
Publication Date
November 1, 2014
Subject Category
Cybernetics, Artificial Intelligence and Robotics
Report/Patent Number
NASA/TM-2014-218660
L-20493
NF1676L-20120
Funding Number(s)
WBS: WBS 470883.04.07.01.03
Distribution Limits
Public
Copyright
Public Use Permitted.

Available Downloads

NameType 20150000596.pdf STI