Max Firmbach M.Sc.

Professur für Computergestützte Simulation im Bauingenieurwesen
Gebäude 41/100, Zimmer 5123
+49 89 6004 3408
max.firmbach@unibw.de

Max Firmbach M.Sc.

Academic Career

09/2024 - 12/2024 Visiting Researcher, Computational Science Research Institute, Sandia National Laboratories, USA
04/2021 -  Doctoral Researcher, Institute for Mathematics and Computer-Based Simulation, University of the Bundeswehr Munich
10/2018 - 03/2021 Master of Science, Computational Science and Engineering, TU Munich
09/2014 - 05/2018 Bachelor of Engineering, Aerospace Engineering, University of Applied Sciences Aachen

Research Interest

  • Preconditioning and efficient algorithms for the mixed-dimensional modelling of the interaction of solid continua with embedded beams

sparsity_pattern_concrete_wall_I.pngconcrete_wall_sketch_200dpi.jpg

Sparsity pattern of the system matrix                     Model of a concrete wall with steel rebar

 

  • Partitioned and monolithic coupling approaches for fluid-structure interaction

ElasticTube3D.gif

Deformation of a flexible pipe due to a traveling pressure wave

Software Development

I mostly do programming in C++, but also work with Python and Matlab.

The most important software libraries I currently work with:

Libraries I used or/and contributed to:

  • preCICE: coupling library for partitioned multi-physics simulations
  • DUNE: distributed and unified numerics environment for solving partial differential equations

Preprints and Articles Submitted for Publication

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Articles in Peer-Reviewed International Journals

  1. Firmbach M, Steinbrecher I, Popp A, Mayr M: An approximate block factorization preconditioner for mixed-dimensional beam-solid interaction, Computer Methods in Applied Mechanics and Engineering, 431:117256, 2024, DOI doi.png, arXiv web-logo.png

Conference Proceedings and Book Contributions (with Peer-Review)

  1. Firmbach M, Steinbrecher I, Popp A, Mayr M (2023): Computational challenges in mixed-dimensional beam/solid coupling. Proceedings in Applied Mathematics and Mechanics, 23(1): e202200227, DOI (Open Access) doi.png

International Conference Contributions with Abstract

  1. Firmbach M, Mayr M: An open-source framework for physics-based algebraic multigrid block preconditioners in MueLu, ECCOMAS 2024 European Congress on Computational Methods in Applied Sciences and Engineering, Lisbon, Portugal, June 3 - 7, 2024
  2. Firmbach M, Popp A, Mayr M: Physics-based block preconditioning for beam/solid coupling, ECCOMAS 2024 European Congress on Computational Methods in Applied Sciences and Engineering, Lisbon, Portugal, June 3 - 7, 2024
  3. Firmbach M, Popp A, Mayr M: Physics-based block preconditioning for mixed-dimensional beam/solid coupling, 36th Chemnitz Finite Element Symposium, Leibnitz, Austria, September 11 - 13, 2023
  4. Firmbach M, Popp A, Mayr M: Multigrid preconditioning for mixed-dimensional beam/solid coupling, 10th International Conference on Coupled Problems in Science and Engineering, Chania/Crete, Greece, June 5 - 7, 2023
  5. Firmbach M, Popp A, Mayr M: Physics-Based Algebraic Multigrid Block-Preconditioning for Beam/Solid Interaction, 9th GACM Colloqium on Computational Mechanics 2022, Essen, Germany, September 21 - 23, 2022
  6. Firmbach M, Popp A, Mayr M: Algebraic multigrid block-preconditioning for beam/solid meshtying, 92nd Annual Meeting of the International Association of Applied Mathematics and Mechanics, Aachen, Germany, August 15 - 19, 2022
  7. Firmbach M, Popp A, Mayr M: Physics-based block preconditioning for beam/solid interaction, invited, 15th World Congress on Computational Mechanics & 8th Asian Pacific Congress on Computational Mechanics, Yokohama, Japan, July 31 - August 5, 2022 (virtual)
  8. Firmbach M, Callies R: Aeroelastic simulation of slender wings for electric aircraft: a partitioned approach with DUNE and preCICE,  invited, 9th International Conference on Coupled Problems in Science and Engineering, Chia Laguna/Sardinia, Italy, June 13 - 16, 2021 (virtual)

 

Workshops

  1. Firmbach M: TBA, Trilinos User Group Meeting, Albuquerque, USA, October 22-24, 2024
  2. Firmbach M: Block preconditioning for fluid-structure interaction in Trilinos: Teko vs. MueLu, European Trilinos User Group Meeting, Hamburg, Germany, June 24-26, 2024
  3. Firmbach M, Popp A, Mayr M: An open-source framework for physics-based algebraic multigrid block preconditioners, GAMM CSE Workshop, November 10/17, 2023 (virtual)
  4. Firmbach M: Trilinos User Group Meeting, Albuquerque, USA, October/November 31-02, 2023 (virtual)
  5. Firmbach M: Development of physics-based multi-level block preconditioners in Trilinos/MueLu, European Trilinos User Group Meeting, Delft, Netherlands, June 28-30, 2023
  6. Firmbach M, Popp A, Mayr M: Physics based block preconditioning with sparse approximate inverses in MueLu: An application to beam/solid interaction, Trilinos User Group Meeting, Albuquerque, USA, October 25-27, 2022 (virtual)
  7. Firmbach M: Physics based block preconditioning with sparse approximate inverses in MueLu - An application to beam solid interaction, invited, European Trilinos User Group Meeting, Munich, Germany, September 12-14, 2022 (virtual)
  8. Firmbach M: 3rd preCICE Workshop, Stuttgart, Germany, February 21-23, 2022 (virtual)

 

Other Articles, Reports and Book Contributions

    1. Neumann P, Duffek JA, Kleinschmidt J, Leinen WG, Breuer M, Schmidt-Lauff S, Fink A, Mayr M, Firmbach M, Popp A, Auwetter A (2022): hpc.bw - A supercomputer with competence platform for the universities of the federal armed forces, In: dtec.bw-Beiträge der Helmut-Schmidt-Universität / Universität der Bundeswehr Hamburg, 1:305-310, D. Schulz et al. (Eds.), Hamburg, Germany, DOI (Open Access) doi.png

Monographs

  1. Firmbach (2021): Aeroelastic simulation of slender wings for electric aircraft: a partitioned approach with DUNE and preCICE, Master's thesis, TU Munich
  2. Firmbach (2018): Evaluation and modification of a finite element material model for structural adhesives during electrophoretic deposition, Bachelor's thesis, University of Applied Sciences Aachen

Courses & Exercises

HT 21, 22, 23

Programmieren (Exercise)
WT 22, 23, 24

Statistik (Exercise)
FT 24 Modeling of Uncertainties and Data (Exercise, Stand-In)

 

Supervised Student Projects / Theses

  1. Evaluation of a geometric search algorithm for mixed dimensional modeling approaches, University of the Bundeswehr Munich, Bachelor's Thesis, Germany (2024)
  2. Comparison of smoothers for algebraic multigrid preconditioning in fluid-structure interaction , University of the Bundeswehr Munich, Term Paper, Germany (2023)
  3. Algebraic multigrid block preconditioning for fluid-structure interaction using MueLu, University of the Bundeswehr Munich, Master's Thesis, Germany (2023)
  4. Enhancement of algorithms for beam/solid interaction, University of the Bundeswehr Munich, Student Project, Germany (2023)
  5. Implementation of truss elements inside the DUNE framework, University of the Bundeswehr Munich, Bachelor's Thesis, Germany (2021)