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Onderdelen
Document Acties

Prof. Roger A. Sauer, Ph.D.











Contact

Aachen Institute for Advanced Study in Computational Engineering Science (AICES)
RWTH Aachen University
Schinkelstrasse 2
52056 Aachen
Germany

Phone: +49 241 80 99129
Fax: +49 241 80 628498
Email: sauer (AT) aices (DOT) rwth-aachen (DOT) de

Education


PhD in Computational Mechanics, University of California at Berkeley, USA, 2006
MSc in Computational Mechanics, University of California at Berkeley, USA, 2003
Dipl.-Ing. in Civil Engineering, University of Karlsruhe, Germany, 2002
Exchange student at the University of Edinburgh, Scotland, 1998/99

Professional Career


since July 2014: Associate Professor in Mechanical Engineering
since Jan 2014: Deputy Scientific Director of the Graduate School AICES
2012 - 2014: Member of the Junges Kolleg, NRW Academy of the Sciences and Arts
since Jan 2010: Research group leader at AICES, RWTH Aachen University, Germany
2009 - 2014: Funded by the Emmy Noether program of the DFG
2008 - 2009: Young research group leader at the Institute for Continuum Mechanics, Leibniz University Hannover, Germany
2007 - 2008: Post Doc. at the Institute of Mechanics and Computational Mechanics, Leibniz University Hannover, Germany
2002 - 2006: Research and teaching assistant at the Department of Civil Engineering, University of California at Berkeley, USA

Research Interests


Nonlinear continuum mechanics, advanced finite element methods, multiscale methods, contact mechanics, biomechanical adhesion and self-cleaning surface mechanisms
Research group website: Computational Contact and Adhesion Mechanics

Teaching


WS 2010/11: Computational Contact Mechanics
WS 2011/12: Computational Contact Mechanics
SS 2012: Nonlinear Finite Element Methods for Solids
WS 2012/13: Computational Contact Mechanics
SS 2013: Nonlinear Finite Element Methods for Solids
SS 2013: From Molecular to Continuum Physics II
WS 2013/14: Computational Contact Mechanics: scheduled in 115 Rogowski on Tuesdays from 13:15am - 15:45pm, starting from Oct. 15th.
SS 2014: Nonlinear Finite Element Methods for Solids: introductory lecture held on April 9th from 10am to 11am in 115 Rogowski. Lecture notes and exercises will be posted on L2P
SS 2014: From Molecular to Continuum Physics II. Lecture notes and exercises will be posted on L2P


Publications: Book Chapters


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Osman, M., Rasool, R., Sauer, R.A.: "Computational aspects of self-cleaning surface mechanisms", in K.L. Mittal, editor, Advances in Contact Angle, Wettability and Adhesion, Vol. 1, Wiley, 2013, pdf

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Sauer, R.A.: "Computational contact formulations for soft body adhesion", in Li, S. and Sun, B., editors, Advances in Soft Matter Mechanics, pp. 55-93, Springer, 2012, pdf

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Sauer, R.A.: "Challenges in computational nanoscale contact mechanics", in Mueller-Hoeppe, D., Loehnert, S. and Reese, S., editors, Recent Developments and Innovative Applications in Computational Mechanics, pp. 39-46, Springer, 2011, pdf

Refereed Journal Publications

2014


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Corbett, C.J., Sauer, R.A.: "Three-dimensional isogeometrically enriched finite elements for mixed-mode contact and debonding", submitted, 2014

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Osman, M., Sauer, R.A.: "A parametric study of the hydrophobicity of rough surfaces based on finite element computations", Colloids and Surfaces A: Physicochem. Eng. Aspects 461, pp 119-125, 2014

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Duong, T.X., Sauer, R.A.: "An accurate quadrature technique for the contact boundary in 3D finite element computations", submitted, 2014

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Schmidt, M.G., Sauer, R.A., Ismail, A.E.: "Multiscale treatment of mechanical contact problems involving thin polymeric layers", Modell. Simul. Mater. Sci. Eng. 22, 045012, 2014, pdf

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Gautam, S.S., Sauer, R.A.: "A composite time integration scheme for dynamic adhesion and its application to gecko spatula peeling", Int. J. Comput. Methods, accepted, 2014

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Sauer, R.A.: "Stabilized finite element formulations for liquid membranes and their application to droplet contact", Int. J. Numer. Meth. Fluids 75(7), pp. 519-545, 2014, pdf

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Sauer, R.A.: "A contact theory for surface tension driven systems", Math. Mech. Solids, published online, 2014, pdf

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Mergel, J.C., Sauer, R.A.: "On the optimum shape of thin adhesive strips for various peeling directions", J. Adhesion 90(5-6), pp. 526-544, 2014, pdf

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Corbett, C.J., Sauer, R.A.: "NURBS-enriched contact finite elements", Comput. Methods Appl. Mech. Engrg. 275, pp. 55-75, 2014, pdf

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Mergel, J.C., Sauer, R.A., Saxena, A.: "Computational optimization of adhesive microstructures based on a nonlinear beam formulation", Struct. Multidisc. Optim., published online, 2014, pdf

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Sauer, R.A., Mergel, J.C.: "A geometrically exact finite beam element formulation for thin film adhesion and debonding", Finite Elem. Anal. Des. 86, pp. 120-135, 2014, pdf

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Sauer, R.A., De Lorenzis, L.: "An unbiased computational contact formulation for 3D friction", Int. J. Numer. Meth. Engng., accepted, 2014

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Sauer, R.A., Duong, X.T, Corbett, C.J.: "A computational formulation for constrained solid and liquid membranes considering isogeometric finite elements", Comput. Methods Appl. Mech. Engrg. 271, pp. 48-68, 2014, preprint, final pdf

2013


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Gautam, S.S., Sauer, R.A.: "An energy-momentum-conserving temporal discretization scheme for adhesive contact problems", Int. J. Numer. Meth. Engng. 93(10), pp. 1057-1081, 2013, pdf

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Sauer, R.A.: "Local finite element enrichment strategies for 2D contact computations and a corresponding post-processing scheme", Comput. Mech. 52(2), pp. 301-319, 2013, pdf

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Sauer, R.A., De Lorenzis, L.: "A computational contact formulation based on surface potentials", Comput. Methods Appl. Mech. Engrg. 253, pp. 369-395, 2013, pdf

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Saxena, A., Sauer, R.A.: "Combined gradient-stochastic optimization with negative circular masks for large deformation topologies", Int. J. Numer. Meth. Engng. 93(6), pp. 635-663, 2013, pdf

2012


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Sauer, R.A.: "Advances in the computational modeling of the gecko adhesion mechanism", J. Adhes. Sci. Technol., Special Issue on Bio-inspired Adhesion, published online, 2012, pdf

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Sauer, R.A., Holl, M.: "A detailed 3D finite element analysis of the peeling behavior of a gecko spatula", Comp. Meth. Biomech. Biomed. Engrg., published online, 2012, pdf

2011


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Sauer, R.A.: "The peeling behavior of thin films with finite bending stiffness and the implications on gecko adhesion", J. Adhesion 87 (7-8), pp. 624-643, 2011, pdf

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Sauer, R.A.: "Enriched contact finite elements for stable peeling computations", Int. J. Numer. Meth. Engng. 87, pp. 593-616, 2011, pdf

2010


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Sauer, R.A.: "A computational model for nanoscale adhesion between deformable solids and its application to gecko adhesion", J. Adhes. Sci. Technol. 24, pp. 1807-1818, 2010, pdf

2009


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Sauer, R.A., Wriggers, P.: "Formulation and analysis of a 3D finite element implementation for adhesive contact at the nanoscale", Comput. Methods Appl. Mech. Engrg. 198, pp. 3871-3883, 2009, pdf

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Sauer, R.A.: "Multiscale modeling and simulation of the deformation and adhesion of a single gecko seta", Comp. Meth. Biomech. Biomed. Engng. 12(6), pp. 627-640, 2009, pdf

2008


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Sauer, R.A., Li, S.: "An atomistically enriched continuum model for nanoscale contact mechanics and its application to contact scaling", J. Nanosci. Nanotech. 8(7), pp. 3757-3773, 2008, pdf

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Sauer, R.A., Li, S.: "The composite Eshelby Tensors and their application to homogenization", Acta Mech. 197, pp. 63-96, 2008

2007


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Sauer, R.A., Li, S.: "An atomic interaction-based continuum model for adhesive contact mechanics", Finite Elem. Anal. Des. 43(5), pp. 384-396, 2007, pdf

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Sauer, R.A., Li, S.: "A contact mechanics model for quasi-continua", Int. J. Numer. Meth. Engrg. 71(8), pp. 931-962, 2007, pdf

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Li, S., Wang, G., Sauer, R.A.: "The Eshelby Tensors in a finite spherical domain: II. Applications in homogenization", J. Appl. Mech. 74(4), pp. 784-797, 2007

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Li, S., Sauer, R.A., Wang, G.: "The Eshelby Tensors in a finite spherical domain: I. Theoretical formulations", J. Appl. Mech. 74(4), pp. 770-783, 2007

2005


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Wang, G., Li, S., Sauer, R.: "A circular inclusion in a finite domain: II. The Neumann-Eshelby problem", Acta. Mech. 179(1-2) pp. 91-110, 2005

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Li, S., Sauer, R., Wang, G.: "A circular inclusion in a finite domain: I. The Dirichlet-Eshelby problem", Acta. Mech. 179(1-2) pp. 67-90, 2005

Other Publications

2014


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Osman, M., Sauer, R.A.: "Quasi-static analysis of self-cleaning surface mechanisms", Proc. 22nd UK Conference on Computational Mechanics (ACME2014), pp. 324-227, 2014, pdf

2013


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Rasool, R., Osman, M., Sauer, R.A.: "Computational modeling of liquid droplets moving on rough surfaces", Proc. Appl. Math. Mech. 13, pp. 233-234, 2013

2012


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Rasool, R., Sauer, R.A., Osman, M.: "Internal flow analysis for slow moving small droplets in contact with hydrophobic surfaces", Proc. Appl. Math. Mech. 12, pp. 489-490, 2012

2011


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Osman, M., Sauer, R.A.: "A two-dimensional computational droplet contact model", Proc. Appl. Math. Mech. 11, pp. 103-104, 2011

2010


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Osman, M., Sauer, R.A.: "Mechanical modeling of particle-droplet interaction motivated by the study of self-cleaning mechanisms", Proc. Appl. Math. Mech. 10(1), pp. 85-86, 2010

2009


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Sauer, R.A.: "A computational contact model for nanoscale rubber adhesion", Constitutive Models for Rubber VI, G. Heinrich et al. (Eds.), pp. 47-52, 2009, pdf

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Sauer, R.A.: "A three-dimensional multiscale finite element model describing the adhesion of a gecko seta", Proc. Appl. Math. Mech. 9, pp. 157-158, 2009

2008


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Sauer, R.A.: "A finite element seta model for studying gecko adhesion", ASME Conf. Proc., IMECE2008-67193, pp. 149-150, 2008

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Sauer, R.A.: "An atomic interaction-based rod formulation for modeling gecko adhesion", Proc. Appl. Math. Mech. 8, pp. 10193-10194, 2008

2007


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Sauer, R.A., Li, S.: "An atomic interaction-based continuum model for computational multiscale contact mechanics", Proc. Appl. Math. Mech. 7, pp. 4080029-4080030, 2007

2006


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Sauer, R.A.: "An atomic interaction-based continuum model for computational multiscale contact mechanics", Dissertation, University of California at Berkeley, 2006

2003


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Sauer, R.A.: "The 2D finite Eshelby tensor for a circular inclusion", Master thesis, University of California at Berkeley, 2003

2002


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Sauer, R.A.: "Development and numerical implementation of a three-dimensional elastoplastic model for the computation of concrete structures", Diplomarbeit, University of Karlsruhe, Germany, 2002