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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 2a
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
2014 - 2015: 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, nonlinear membrane and shell theories, self-cleaning surface mechanisms, biological cell membranes
Research group website: Computational Contact and Adhesion Mechanics

Teaching


WS 2015/16: Computational Contact Mechanics: scheduled on Wednesdays from 8:15-9:45 in 115 Rogowski and 10:00-11:30 in 001 GRS.
WS 2015/16: Advanced Topics in Contact Mechanics (seminar for doctoral and advanced master students): scheduled on Thursday mornings - please contact me if interested.
SS 2016: From Molecular to Continuum Physics II: held on Tuesdays from 9:15-11:45 in 001 GRS, starting from April 12th.
SS 2016: Nonlinear Finite Element Methods for Solids: held on Thursdays from 8:15-11:30 in 001 GRS, starting from April 14th.
SS 2016: Computational Modeling of Membranes and Shells: held on Wednesday mornings from 9:15-11:45 in 115 Rogowski, starting from April 13th.
SS 2016: Advanced Topics in Computational Mechanics (seminar for doctoral and advanced master students). Planned for Thursday afternoon. Please contact me if interested.
Lecture and exercise notes will be posted on L2P
The lecture 'From Molecular to Continuum Physics II' is supported from Quality Improvement Funds (Qualitätsverbesserungsmittel). The contact person for the use of these funds is Roger Sauer. Further information concerning the use of QVM funds in the faculty of mechanical engineering can be found here.

Publications: Book Chapters


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Osman, M., Sauer, R.A.: "Computational analysis of wetting on hydrophobic surfaces: Application to self-cleaning mechanisms", in K.L. Mittal, editor, Advances in Contact Angle, Wettability and Adhesion, Vol. 2, Wiley, 2015, pdf

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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 (arranged by online publication)

2016


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Mergel, J.C., Sauer, R.A., Ober-Blöbaum, S.: "C1-continuous space-time discretization based on Hamilton’s law of varying action", submitted, 2016, preprint

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Sauer, R.A.: "A frictional sliding algorithm for liquid droplets", Comput. Mech., published online, 2016, pdf

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Harmel, M., Sauer, R.A., Bommes, D.: "Volumetric mesh generation from T-spline surface representations", Comput. Aid. Des., published online, 2016, pdf

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Duong, T.X., Roohbakhshan, F., Sauer, R.A.: "A new rotation-free isogeometric thin shell formulation and a corresponding continuity constraint for patch boundaries", Comput. Methods Appl. Mech. Engrg., published online, 2016, pdf (with minor corrections)

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Kumar, P., Sauer, R.A., Saxena, A.: "Synthesis of C0 path-generating contact-aided compliant mechanisms using the material mask overlay method", J. Mech. Design 138(6), 062301, 2016, pdf

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Rasool, R., Corbett, C.J., Sauer, R.A.: "A strategy to interface isogeometric analysis with Lagrangian finite elements - application to incompressible flow problems", Comp. Fluids 127, pp. 183-193, 2016

2015


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Sauer, R.A.: "A survey of computational models for adhesion", J. Adhesion 92(2), pp. 81-120, 2016, pdf

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Roohbakhshan, F., Duong, T.X., Sauer, R.A.: "A projection method to extract biological membrane models from 3D material models", J. Mech. Behav. Biomed. Mat. 58, pp. 90-104, 2016, pdf

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Sauer, R.A., Duong, T.X.: "On the theoretical foundations of thin solid and liquid shells", Math. Mech. Solids, published online, 2015, pdf

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Schmidt, M.G., Ismail, A.E., Sauer, R.A.: "A continuum mechanical surrogate model for atomic beam structures", Int. J. Multiscale Comput. Engrg. 13(5), pp. 413–442, 2015, pdf

2014


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Corbett, C.J., Sauer, R.A.: "Three-dimensional isogeometrically enriched finite elements for frictional contact and mixed-mode debonding", Comput. Methods Appl. Mech. Engrg. 284, pp. 781-806, 2015, pdf

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Duong, T.X., Sauer, R.A.: "An accurate quadrature technique for the contact boundary in 3D finite element computations", Comput. Mech. 55(1), pp. 145-166, 2015, pdf

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Sauer, R.A., De Lorenzis, L.: "An unbiased computational contact formulation for 3D friction", Int. J. Numer. Meth. Engng. 101(4), pp. 251-280, 2015, pdf

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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 461, pp. 119-125, 2014, pdf

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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 11(5), 1350104, 2014, pdf

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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 21(3) pp. 305-325, 2016, 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. 50(6), pp. 1001-1017, 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

2013


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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

2012


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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

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Sauer, R.A.: "Advances in the computational modeling of the gecko adhesion mechanism", J. Adhes. Sci. Technol. 28(3-4), Special Issue on Bio-inspired Adhesion, pp. 240-255, 2014, 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. 16(6), pp. 577-591, 2013, 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

2015


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Kumar, P., Sauer, R.A., Saxena, A.: "On synthesis of contact aided compliant mechanisms using the material mask overlay method", ASME Proceedings of the 39th Mechanisms and Robotics Conference, DETC2015-47064, 2015, pdf

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Raste, H., Saxena, A., Sauer, R.A., Corves, B.: "Bioinspired mechanism synthesis for flapping flight with unsteady flow effects", Mechanisms, Transmissions and Applications - Proceedings of the Third MeTrApp Conference 2015, pp. 324-227, 2015

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