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Stress Analysis of HEG Piston

Robinson, M. (2004) Stress Analysis of HEG Piston. DLR-Interner Bericht. 224-2004 A 05, 64 S.

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Abstract

This report details finite element simulations performed on the High Enthalpy Shock Tunnel, Göttingen (HEG) piston for operation at burst pressures greater than 20 MPa. An axisymmetric finite element grid was used for all simulations. The piston body and brake pads were modelled and simulated under a number of different loading conditions. A uniform pressure of 20 MPa was applied in most cases and prospective burst pressures were determined via linear extrapolation to a safety factor of 1.0. It is recommended that a burst pressure of no more than 50 MPa be used. This equates to a safety factor of 1.5 to initial yielding for the most appropriate analysis (refined non­linear transient analysis with modified wall/brake/body contact over 20 ms). The use of a safety factor for the piston body is recommended

Document Type:Monograph (DLR-Interner Bericht)
Additional Information: LIDO-Berichtsjahr=2004,
Title:Stress Analysis of HEG Piston
Authors:
AuthorsInstitution or Email of Authors
Robinson, M.UNSPECIFIED
Date:2004
Number of Pages:64
Status:Published
Keywords:Stress Analysis, Piston, HEG
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W RP - Raumtransport
DLR - Research area:Space
DLR - Program:W RP - Raumtransport
DLR - Research theme (Project):UNSPECIFIED
Location: Köln-Porz , Braunschweig , Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology
Deposited By: Dagmar Brennecke-Hosseinzadeh
Deposited On:31 Jan 2006
Last Modified:14 Jan 2010 19:33

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