NDLI: Optimum element density studies for finite-element thermal analysis of hypersonic aircraft structures

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Optimum element density studies for finite-element thermal analysis of hypersonic aircraft structures

Content Provider	NASA Technical Reports Server (NTRS)
Author	Ko, William L. Muramoto, Kyle M. Olona, Timothy
Copyright Year	1990
Description	Different finite element models previously set up for thermal analysis of the space shuttle orbiter structure are discussed and their shortcomings identified. Element density criteria are established for the finite element thermal modelings of space shuttle orbiter-type large, hypersonic aircraft structures. These criteria are based on rigorous studies on solution accuracies using different finite element models having different element densities set up for one cell of the orbiter wing. Also, a method for optimization of the transient thermal analysis computer central processing unit (CPU) time is discussed. Based on the newly established element density criteria, the orbiter wing midspan segment was modeled for the examination of thermal analysis solution accuracies and the extent of computation CPU time requirements. The results showed that the distributions of the structural temperatures and the thermal stresses obtained from this wing segment model were satisfactory and the computation CPU time was at the acceptable level. The studies offered the hope that modeling the large, hypersonic aircraft structures using high-density elements for transient thermal analysis is possible if a CPU optimization technique was used.
File Size	2160105
Page Count	40
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19900007758
Archival Resource Key	ark:/13960/t79s6nv94
Language	English
Publisher Date	1990-01-01
Access Restriction	Open
Subject Keyword	Fluid Mechanics And Heat Transfer Radiation Effects Reentry Central Processing Units Space Shuttle Orbiters Optimization Finite Element Method Wings Mathematical Models Thermal Analysis Hypersonic Aircraft Aircraft Structures Heat Transfer Thermal Stresses Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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