TY - THES A1 - Springmann, Marcel T1 - Identifikation von Materialparametern schädigungsmechanischer Gesetze unter Einbeziehung der Dehnungslokalisierung KW - Materialparameter KW - Dehnungslokalisierung Y1 - 2005 SN - 3-89820-926-1 PB - Mensch und Buch Verl. CY - Berlin ER - TY - CHAP A1 - Kuna, M. A1 - Springmann, Marcel T1 - Determination of ductile damage parameters by local deformation fields KW - ductile damage parameters Y1 - 2006 ER - TY - GEN A1 - Springmann, Marcel A1 - Kühhorn, Arnold A1 - Filipiak, A. A1 - Hugler, Daniel A1 - Dufor, K.-H. T1 - Generisches Flugtriebwerksmodell für die Anwendung in der Vorentwicklungsphase Y1 - 2010 ER - TY - GEN A1 - Zolochevsky, Alexander A1 - Galishin, A. A1 - Kühhorn, Arnold A1 - Springmann, Marcel T1 - Transversal Shear Effect in Moderately Thick Shells from Materials with Characteristics Dependent on the Kind of Stress State under Creep-Damage Conditions: Numerical Modeling Y1 - 2009 ER - TY - GEN A1 - Zolochevsky, Alexander A1 - Galishin, A. A1 - Kühhorn, Arnold A1 - Springmann, Marcel T1 - Transversal Shear Effect in Moderately Thick Shells from Materials with Characteristics Dependent on the Kind of Stress State under Creep-Damage Conditions: Theoretical Framework Y1 - 2009 ER - TY - GEN A1 - Springmann, Marcel A1 - Kühhorn, Arnold A1 - Kuna, M. A1 - Scherzer, M. T1 - Influence of Strain Localization on Parameter Identification Y1 - 2009 ER - TY - CHAP A1 - Springmann, Marcel A1 - Kühhorn, Arnold A1 - Filipiak, A. A1 - Hugler, Daniel A1 - Dufor, K.-H. T1 - Automatic generation and optimization of a simplified aircraft engine model using a graphical user interface and full parameterization Y1 - 2008 ER - TY - CHAP A1 - Springmann, Marcel A1 - Kühhorn, Arnold T1 - Coupled thermal-multiphase flow analysis in quenching processes for residual stress optimization in compressor and turbine disks T2 - Proceedings of the ASME Pressure Vessels and Piping Conference - 2008, presented at 2008 ASME Pressure Vessels and Piping Conference, July 27 - 31, 2008, Chicago, Illinois, USA, Vol. 4 Y1 - 2008 SN - 978-0-7918-4827-2 SP - 147 EP - 156 PB - ASME CY - New York, NY ER - TY - CHAP A1 - Springmann, Marcel A1 - Schlums, H. A1 - Kühhorn, Arnold T1 - Numerical simulation of quenching processes for residual stress optimization in compressor and turbine disks Y1 - 2008 ER - TY - CHAP A1 - Rauer, Georg A1 - Kühhorn, Arnold A1 - Springmann, Marcel T1 - Residual Stress Simulation of an Aero Engine Disc during Heat Treatment T2 - Proceedings of the 6th European Congress on Computational Methods in Applied Sciences and Engineering (ECCOMAS 2012), Vienna, Austria, September 10-14, 2012 KW - Residual Stress KW - Disc Heat Treatment Y1 - 2012 SN - 978-3-9502481-9-7 PB - Techn. Univ. CY - Wien ER - TY - CHAP A1 - Rauer, Georg A1 - Kühhorn, Arnold A1 - Springmann, Marcel T1 - Residual Stress Modelling and Inverse Heat Transfer Coefficients Estimation of a Nickel-Based Superalloy Disc Forging T2 - ASME Turbo Expo 2014: Turbine Technical Conference and Exposition, Volume 6, Düsseldorf, Germany, June 16–20, 2014, Paper GT2014-25827 N2 - Aero engine disc forgings are subjected to heat treatment operations, i.e., solution treatment followed by quenching and artificial aging, with the aim of achieving improved mechanical material properties. During heat treatment high inhomogeneous temperature gradients and long loading times at elevated temperatures occur and lead to the development and partial relaxation of bulk residual stresses. The intention of this paper is to describe the residual stress modelling of a nickel-based ATI 718Plus® superalloy disc forging. For this purpose, an uncoupled thermomechanical finite element problem is solved consisting of a thermal model based on transient, spatially varying heat transfer coefficients (HTCs) and a stress model incorporating the nonlinear material behaviour to account for thermal induced inelastic deformations. A graphical user interface based application has been created for the automatic estimation of the a priori unknown HTCs by using a serial solution procedure for the two dimensional inverse heat conduction problem (IHCP) based on the function specification method. The estimated temperature fields have been compared at the thermocouple positions with the corresponding measurement data and confirm the suitability of the inverse algorithm to this problem. A rate-independent elasto-plastic constitutive model is used to simulate the residual stress formation while quenching the disc forging. Two creep models have been adjusted to uniaxial tensile test data and applied to simulate the stress relaxation during aging. Finally, this paper presents the numerical results of the stress analysis. Copyright © 2014 by Rolls-Royce Deutschland Ltd & Co KG KW - Nickel KW - Superalloys KW - Forging KW - Stress KW - Modeling Y1 - 2014 SN - 978-0-7918-4575-2 U6 - https://doi.org/10.1115/GT2014-25827 PB - ASME ER - TY - CHAP A1 - Springmann, Marcel A1 - Scherzer, M. A1 - Kuna, M. A1 - Kühhorn, Arnold T1 - Numerical simulation of localization phenomena in the frame of damage parameter identification T2 - Seminar: Materials modeling, FE simulations of the behavior of modern industrial materials including failure, 5th - 6th December 2006, Niedernhausen (Wiesbaden), Germany Y1 - 2006 SN - 1-874376-19-0 PB - NAFEMS Contact Nordic Countries CY - Grafing b. München ER - TY - CHAP A1 - Springmann, Marcel A1 - Kühhorn, Arnold A1 - Rauer, Georg A1 - Giersch, Thomas T1 - Constitutive Modelling of Plastic and Creep Behavior of the Nickel Base Superalloy ALLVAC® 718PLUS® under Heat Treatment Conditions KW - Behavior KW - Nickel-Based Superalloy KW - Heat Treatment Conditions Y1 - 2011 ER - TY - CHAP A1 - Springmann, Marcel A1 - Filipiak, A. T1 - Automatische Generierung eines vereinfachten Triebwerkmodells KW - Triebwerk Y1 - 2006 ER - TY - JOUR A1 - Springmann, Marcel A1 - Kuna, M. T1 - Determination of ductile damage parameters by local deformation fields: Measurement and Simulation JF - Archive of Applied Mechanics Y1 - 2006 SN - 0939-1533 VL - 75 IS - 10-12 SP - 775 EP - 797 ER -