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G. Zavarise*, B.A. Schrefler* and P. Wriggers#

*Istituto di Scienza e Tecnica delle Costruzioni, Facolta di Ingegneria, Universita di Padova, Italy
#Institut für Mechanik-Technische Hochschule, Darmstadt, Germany

doi:10.4203/ccp.23.4.1

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G. Zavarise, B.A. Schrefler, P. Wriggers, "On Numerical Analysis of Thermomechanical Contact Problems", in M. Papadrakakis, B.H.V. Topping, (Editors), "Advances in Simulation and Interaction Techniques", Civil-Comp Press, Edinburgh, UK, pp 157-163, 1994. doi:10.4203/ccp.23.4.1

Abstract

In this paper a micromechanical formulation is used in combination with augmented lagrangian technique for the analysis of thermomechanical contact problems. Axial, tangential and thermal stiffnesses are determined using nonlinear relationships based on statistical characterisation of contact microscophical asperities. Ill-conditioning is avoided using augmented lagrangian technique. This means that microscopical laws are not used to determine the target contact stiffness, but are used to force the target contact approach. Correct solutions are obtained by imposing contact forces as external ones, and convergence is achieved when the target approach is satisfied. Symmetrization of the contact contribution is also considered within the augmentation loop, and different strategies taking into account thermal coupling are compared.

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Front Page Browse CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Proceedings ISSN 1759-3433 CCP: 23 ADVANCES IN SIMULATION AND INTERACTION TECHNIQUES Edited by: M. Papadrakakis and B.H.V. Topping Paper IV.1 On Numerical Analysis of Thermomechanical Contact Problems G. Zavarise, B.A. Schrefler and P. Wriggers# *Istituto di Scienza e Tecnica delle Costruzioni, Facolta di Ingegneria, Universita di Padova, Italy #Institut für Mechanik-Technische Hochschule, Darmstadt, Germany doi:10.4203/ccp.23.4.1 purchase the full-text of this paper Full Bibliographic Reference for this paper G. Zavarise, B.A. Schrefler, P. Wriggers, "On Numerical Analysis of Thermomechanical Contact Problems", in M. Papadrakakis, B.H.V. Topping, (Editors), "Advances in Simulation and Interaction Techniques", Civil-Comp Press, Edinburgh, UK, pp 157-163, 1994. doi:10.4203/ccp.23.4.1 Abstract In this paper a micromechanical formulation is used in combination with augmented lagrangian technique for the analysis of thermomechanical contact problems. Axial, tangential and thermal stiffnesses are determined using nonlinear relationships based on statistical characterisation of contact microscophical asperities. Ill-conditioning is avoided using augmented lagrangian technique. This means that microscopical laws are not used to determine the target contact stiffness, but are used to force the target contact approach. Correct solutions are obtained by imposing contact forces as external ones, and convergence is achieved when the target approach is satisfied. Symmetrization of the contact contribution is also considered within the augmentation loop, and different strategies taking into account thermal coupling are compared. purchase the full-text of this paper (price £20) go to the previous paper go to the next paper return to the table of contents return to the book description purchase this book (price £60 +P&P)
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