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DETERMINATION OF NONLINEAR MATERIAL PARAMETERS OF A TYPICAL COMBUSTION CHAMBER MATERIAL BY MEANS OF OPTIMIZATION METHODS

Riccius, Jörg (2003) DETERMINATION OF NONLINEAR MATERIAL PARAMETERS OF A TYPICAL COMBUSTION CHAMBER MATERIAL BY MEANS OF OPTIMIZATION METHODS. In: DGLR. Deutscher Luft- und Raumfahrtkongress 2003, 2003-11-17 - 2003-11-20, München (Deutschland).

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Abstract

A study for the determination of elasto-plastic parameters of a typical combustion chamber material (Cu alloy) with different test sample ge-ometries is presented. Based on the experimen-tal results of elasto-plastic tests of three sample geometries, the appropriate elasto-plastic pa-rameters such as yield stress and hardening parameters are determined. Cyclic fatigue calculations using FEM which as-sumes either kinematic hardening or isotropic hardening showed that neither of the methods alone was able to reproduce the experimentally determined material behavior for a cyclic defor-mation of one of the test samples. By the use of a combination of non-linear kinematic and multi linear isotropic hardening, a satisfying agreement between experiment and FEM predictions can be obtained. For the majority of the tests (cyclic tests, biaxial tests), optimization algorithms had to be applied in order to determine the material parameters from the test results.

Item URL in elib:https://elib.dlr.de/49567/
Document Type:Conference or Workshop Item (Speech, Paper)
Title:DETERMINATION OF NONLINEAR MATERIAL PARAMETERS OF A TYPICAL COMBUSTION CHAMBER MATERIAL BY MEANS OF OPTIMIZATION METHODS
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Riccius, JörgUNSPECIFIEDUNSPECIFIED
Date:November 2003
Journal or Publication Title:DGLR
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Editors:
EditorsEmail
DGLR, UNSPECIFIED
Status:Published
Keywords:Rocket combustion chamber material, elasto-plastic material testing, multi-linear material pa-rameter determination, cyclic loading, low cycle fatigue, nonlinear structural analysis, Finite Ele-ment Method, Optimization
Event Title:Deutscher Luft- und Raumfahrtkongress 2003
Event Location:München (Deutschland)
Event Type:national Conference
Event Dates:2003-11-17 - 2003-11-20
Organizer:DGLR
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):W - Antriebsystemtechnik - Schubkammertechnologie und Hochdruckverbrennung (old)
Location: Lampoldshausen
Institutes and Institutions:Institute of Space Propulsion > Technologie
Deposited By: Seidel, Rudolf
Deposited On:10 Jul 2007
Last Modified:12 Dec 2013 20:26

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