Christian Roman Bielak

Werkstoff- und Fügetechnik
christian.bielak@lwf.uni-paderborn.de
ID
34782

31 Publications

Mark all

[31]
2025 | Conference Paper | LibreCat-ID: 59878
Experimental and numerical investigation of the influence of rolling-induced sheet metal deformation on SPR joints
M.C. Schlichter, Ö. Harabati, J.-P. Ludwig, M. Böhnke, C.R. Bielak, M. Bobbert, G. Meschut, in: Materials Research Proceedings, Materials Research Forum LLC, Paestum, 2025.
LibreCat | DOI
 
[30]
2025 | Conference Paper | LibreCat-ID: 60002
Cross-process damage modeling: A process-chain case study of clinching and self-pierced riveting for aluminum connections
Ö. Harabati, C.R. Bielak, M. Böhnke, M.C. Schlichter, M. Brockmeier, M. Bobbert, G. Meschut, in: Materials Research Proceedings, Materials Research Forum LLC, 2025.
LibreCat | DOI
 
[29]
2025 | Conference Paper | LibreCat-ID: 60440
Simulation of the joining process of graded hardened multi-range capable rivets
P.K. Holtkamp, C.R. Bielak, M. Bobbert, G. Meschut, in: Materials Research Proceedings, Materials Research Forum LLC, 2025.
LibreCat | DOI
 
[28]
2024 | Journal Article | LibreCat-ID: 57742
Development of a friction model for the numerical simulation of clinching processes
M. Böhnke, C.R. Bielak, R. Beck, M. Bobbert, G. Meschut, Friction (2024).
LibreCat | DOI
 
[27]
2023 | Conference Paper | LibreCat-ID: 43090
Numerical analysis of failure modeling in clinching process chain simulation
C.R. Bielak, M. Böhnke, J. Friedlein, M. Bobbert, J. Mergheim, P. Steinmann, G. Meschut, in: Materials Research Proceedings, Materials Research Forum LLC, 2023.
LibreCat | DOI
 
[26]
2023 | Conference Paper | LibreCat-ID: 43462
A calibration method for failure modeling in clinching process simulations
M. Böhnke, C.R. Bielak, J. Friedlein, M. Bobbert, J. Mergheim, P. Steinmann, G. Meschut, in: Materials Research Proceedings, Materials Research Forum LLC, 2023.
LibreCat | DOI
 
[25]
2023 | Book Chapter | LibreCat-ID: 52454
Experimental and Numerical Investigation of Clinched Joints Under Shear Tensile Loading at High Strain Rates
M. Böhnke, C.R. Bielak, M. Bobbert, G. Meschut, in: Lecture Notes in Mechanical Engineering, Springer Nature Switzerland, Cham, 2023.
LibreCat | DOI
 
[24]
2023 | Conference Paper | LibreCat-ID: 43463
Influence of plastic orthotropy on clinching of sheet metal
J. Friedlein, C.R. Bielak, M. Böhnke, M. Bobbert, J. Mergheim, P. Steinmann, G. Meschut, in: Materials Research Proceedings, Materials Research Forum LLC, 2023.
LibreCat | DOI
 
[23]
2023 | Book | LibreCat-ID: 55960
Methodenentwicklung zur Verbesserung der Schädigungsmodellierung in der numerischen 3D-Belastungssimulation mechanischer Fügeverfahren unter Berücksichtigung der fügeinduzierten Vorbeanspruchung
M.S. Rossel, G. Meschut, C.R. Bielak, M. Otroshi, Methodenentwicklung zur Verbesserung der Schädigungsmodellierung in der numerischen 3D-Belastungssimulation mechanischer Fügeverfahren unter Berücksichtigung der fügeinduzierten Vorbeanspruchung, Europäische Forschungsgesellschaft für Blechverarbeitung e.V., 2023.
LibreCat
 
[22]
2023 | Book Chapter | LibreCat-ID: 52614
Numerical Investigation of the Coupled Friction Behavior in the Clinching Process Chain
C.R. Bielak, M. Böhnke, M. Bobbert, G. Meschut, in: Lecture Notes in Mechanical Engineering, Springer Nature Switzerland, Cham, 2023.
LibreCat | DOI
 
[21]
2022 | Journal Article | LibreCat-ID: 34213
Numerical and experimental identification of fatigue crack initiation sites in clinched joints
L. Ewenz, C.R. Bielak, M. Otroshi, M. Bobbert, G. Meschut, M. Zimmermann, Production Engineering 16 (2022) 305–313.
LibreCat | DOI
 
[20]
2022 | Journal Article | LibreCat-ID: 32413
Experimental and Numerical Investigation on Manufacturing-Induced Pre-Strain on the Load-Bearing Capacity of Clinched Joints
C.R. Bielak, M. Böhnke, M. Bobbert, G. Meschut, Key Engineering Materials 926 (2022) 1516–1526.
LibreCat | DOI
 
[19]
2022 | Journal Article | LibreCat-ID: 31828
Clinching of Aluminum Materials – Methods for the Continuous Characterization of Process, Microstructure and Properties
R. Kupfer, D. Köhler, D. Römisch, S. Wituschek, L. Ewenz, J. Kalich, D. Weiß, B. Sadeghian, M. Busch, J. Krüger, M. Neuser, O. Grydin, M. Böhnke, C.R. Bielak, J. Troschitz, Journal of Advanced Joining Processes 5 (2022).
LibreCat | DOI
 
[18]
2022 | Journal Article | LibreCat-ID: 34215
Clinching of Aluminum Materials – Methods for the Continuous Characterization of Process, Microstructure and Properties
R. Kupfer, D. Köhler, D. Römisch, S. Wituschek, L. Ewenz, J. Kalich, D. Weiß, B. Sadeghian, M. Busch, J.T. Krüger, M. Neuser, O. Grydin, M. Böhnke, C.R. Bielak, J. Troschitz, Journal of Advanced Joining Processes 5 (2022).
LibreCat | DOI
 
[17]
2022 | Book Chapter | LibreCat-ID: 33003
Development of a Modified Punch Test for Investigating the Failure Behavior in Sheet Metal Materials
M. Böhnke, C.R. Bielak, M. Bobbert, G. Meschut, in: The Minerals, Metals & Materials Series, Springer International Publishing, Cham, 2022.
LibreCat | DOI
 
[16]
2022 | Journal Article | LibreCat-ID: 34572
Experimental and numerical investigation of the influence of multiaxial loading conditions on the failure behavior of clinched joints
M. Böhnke, C.R. Bielak, M. Bobbert, G. Meschut, Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications (2022).
LibreCat | DOI
 
[15]
2022 | Journal Article | LibreCat-ID: 30100
Provision of cross-domain knowledge in mechanical joining using ontologies
C. Zirngibl, P. Kügler, J. Popp, C.R. Bielak, M. Bobbert, D. Drummer, G. Meschut, S. Wartzack, B. Schleich, Production Engineering (2022).
LibreCat | DOI
 
[14]
2022 | Book Chapter | LibreCat-ID: 34210
Development of a Numerical 3D Model for Analyzing Clinched Joints in Versatile Process Chains
C.R. Bielak, M. Böhnke, M. Bobbert, G. Meschut, in: The Minerals, Metals & Materials Series, Springer International Publishing, Cham, 2022.
LibreCat | DOI
 
[13]
2022 | Journal Article | LibreCat-ID: 30962
Numerical investigation of a friction test to determine the friction coefficients for the clinching process
C.R. Bielak, M. Böhnke, M. Bobbert, G. Meschut, Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications (2022).
LibreCat | DOI
 
[12]
2022 | Journal Article | LibreCat-ID: 30963
Numerical and experimental identification of fatigue crack initiation sites in clinched joints
L. Ewenz, C.R. Bielak, M. Otroshi, M. Bobbert, G. Meschut, M. Zimmermann, Production Engineering 16 (2022) 305–313.
LibreCat | DOI
 
[11]
2022 | Journal Article | LibreCat-ID: 34069
A Review on the Modeling of the Clinching Process Chain - Part I: Design Phase
B. Schramm, S. Martin, C. Steinfelder, C.R. Bielak, A. Brosius, G. Meschut, T. Tröster, T. Wallmersperger, J. Mergheim, Journal of Advanced Joining Processes 6 (2022).
LibreCat | DOI
 
[10]
2022 | Journal Article | LibreCat-ID: 34068
A Review on the Modeling of the Clinching Process Chain - Part II: Joining Process
B. Schramm, J. Friedlein, B. Gröger, C.R. Bielak, M. Bobbert, M. Gude, G. Meschut, T. Wallmersperger, J. Mergheim, Journal of Advanced Joining Processes (2022).
LibreCat | DOI
 
[9]
2022 | Journal Article | LibreCat-ID: 29951 | OA
Numerical investigation of the clinched joint loadings considering the initial pre-strain in the joining area
S. Martin, C.R. Bielak, M. Bobbert, T. Tröster, G. Meschut, Production Engineering (2022).
LibreCat | DOI | Download (ext.)
 
[8]
2021 | Conference Paper | LibreCat-ID: 20807 | OA
Further development of a numerical method for analyzing the load capacity of clinched joints in versatile process chains
C.R. Bielak, M. Böhnke, M. Bobbert, G. Meschut, in: ESAFORM 2021, n.d.
LibreCat | DOI | Download (ext.)
 
[7]
2021 | Journal Article | LibreCat-ID: 21810
Modeling of Stiffness Anisotropy in Simulation of Self-Piercing Riveted Components
M. Otroshi, G. Meschut, C.R. Bielak, L. Masendorf, A. Esderts, Key Engineering Materials 883 (2021) 35–40.
LibreCat | DOI
 
[6]
2021 | Conference Paper | LibreCat-ID: 21811
Development of a Method for the Identification of Friction Coefficients in Sheet Metal Materials for the Numerical Simulation of Clinching Processes
M.S. Rossel, M. Böhnke, C.R. Bielak, M. Bobbert, G. Meschut, in: Sheet Metal 2021, Trans Tech Publications Ltd, 2021, pp. 81–88.
LibreCat | DOI
 
[5]
2021 | Journal Article | LibreCat-ID: 25556 | OA
Concept development of a method for identifying friction coefficients for the numerical simulation of clinching processes
M. Böhnke, M.S. Rossel, C.R. Bielak, M. Bobbert, G. Meschut, The International Journal of Advanced Manufacturing Technology (2021).
LibreCat | DOI | Download (ext.)
 
[4]
2021 | Journal Article | LibreCat-ID: 34227
Development of a Method for the Identification of Friction Coefficients in Sheet Metal Materials for the Numerical Simulation of Clinching Processes
M.S. Rossel, M. Böhnke, C.R. Bielak, M. Bobbert, G. Meschut, Key Engineering Materials 883 (2021) 81–88.
LibreCat | DOI
 
[3]
2021 | Conference Paper | LibreCat-ID: 34222
Influence of rivet length on joint formation on self-piercing riveting process considering further process parameters
F. Kappe, C.R. Bielak, V. Sartisson, M. Bobbert, G. Meschut, in: ESAFORM 2021, University of Liege, 2021.
LibreCat | DOI
 
[2]
2020 | Journal Article | LibreCat-ID: 20678
Numerical analysis of the robustness of clinching process considering the pre-forming of the parts
C.R. Bielak, M. Böhnke, R. Beck, M. Bobbert, G. Meschut, Journal of Advanced Joining Processes. (2020).
LibreCat | DOI
 
[1]
2020 | Conference Abstract | LibreCat-ID: 20344 | OA
Development of a numerical method for analyzing the robustness of clinching in versatile process chains
C.R. Bielak, M. Böhnke, M. Bobbert, G. Meschut, in: Material Science and Engineering Congress - MSE 2020, n.d.
LibreCat | Files available
 
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31 Publications

Mark all

[31]
2025 | Conference Paper | LibreCat-ID: 59878
Experimental and numerical investigation of the influence of rolling-induced sheet metal deformation on SPR joints
M.C. Schlichter, Ö. Harabati, J.-P. Ludwig, M. Böhnke, C.R. Bielak, M. Bobbert, G. Meschut, in: Materials Research Proceedings, Materials Research Forum LLC, Paestum, 2025.
LibreCat | DOI
 
[30]
2025 | Conference Paper | LibreCat-ID: 60002
Cross-process damage modeling: A process-chain case study of clinching and self-pierced riveting for aluminum connections
Ö. Harabati, C.R. Bielak, M. Böhnke, M.C. Schlichter, M. Brockmeier, M. Bobbert, G. Meschut, in: Materials Research Proceedings, Materials Research Forum LLC, 2025.
LibreCat | DOI
 
[29]
2025 | Conference Paper | LibreCat-ID: 60440
Simulation of the joining process of graded hardened multi-range capable rivets
P.K. Holtkamp, C.R. Bielak, M. Bobbert, G. Meschut, in: Materials Research Proceedings, Materials Research Forum LLC, 2025.
LibreCat | DOI
 
[28]
2024 | Journal Article | LibreCat-ID: 57742
Development of a friction model for the numerical simulation of clinching processes
M. Böhnke, C.R. Bielak, R. Beck, M. Bobbert, G. Meschut, Friction (2024).
LibreCat | DOI
 
[27]
2023 | Conference Paper | LibreCat-ID: 43090
Numerical analysis of failure modeling in clinching process chain simulation
C.R. Bielak, M. Böhnke, J. Friedlein, M. Bobbert, J. Mergheim, P. Steinmann, G. Meschut, in: Materials Research Proceedings, Materials Research Forum LLC, 2023.
LibreCat | DOI
 
[26]
2023 | Conference Paper | LibreCat-ID: 43462
A calibration method for failure modeling in clinching process simulations
M. Böhnke, C.R. Bielak, J. Friedlein, M. Bobbert, J. Mergheim, P. Steinmann, G. Meschut, in: Materials Research Proceedings, Materials Research Forum LLC, 2023.
LibreCat | DOI
 
[25]
2023 | Book Chapter | LibreCat-ID: 52454
Experimental and Numerical Investigation of Clinched Joints Under Shear Tensile Loading at High Strain Rates
M. Böhnke, C.R. Bielak, M. Bobbert, G. Meschut, in: Lecture Notes in Mechanical Engineering, Springer Nature Switzerland, Cham, 2023.
LibreCat | DOI
 
[24]
2023 | Conference Paper | LibreCat-ID: 43463
Influence of plastic orthotropy on clinching of sheet metal
J. Friedlein, C.R. Bielak, M. Böhnke, M. Bobbert, J. Mergheim, P. Steinmann, G. Meschut, in: Materials Research Proceedings, Materials Research Forum LLC, 2023.
LibreCat | DOI
 
[23]
2023 | Book | LibreCat-ID: 55960
Methodenentwicklung zur Verbesserung der Schädigungsmodellierung in der numerischen 3D-Belastungssimulation mechanischer Fügeverfahren unter Berücksichtigung der fügeinduzierten Vorbeanspruchung
M.S. Rossel, G. Meschut, C.R. Bielak, M. Otroshi, Methodenentwicklung zur Verbesserung der Schädigungsmodellierung in der numerischen 3D-Belastungssimulation mechanischer Fügeverfahren unter Berücksichtigung der fügeinduzierten Vorbeanspruchung, Europäische Forschungsgesellschaft für Blechverarbeitung e.V., 2023.
LibreCat
 
[22]
2023 | Book Chapter | LibreCat-ID: 52614
Numerical Investigation of the Coupled Friction Behavior in the Clinching Process Chain
C.R. Bielak, M. Böhnke, M. Bobbert, G. Meschut, in: Lecture Notes in Mechanical Engineering, Springer Nature Switzerland, Cham, 2023.
LibreCat | DOI
 
[21]
2022 | Journal Article | LibreCat-ID: 34213
Numerical and experimental identification of fatigue crack initiation sites in clinched joints
L. Ewenz, C.R. Bielak, M. Otroshi, M. Bobbert, G. Meschut, M. Zimmermann, Production Engineering 16 (2022) 305–313.
LibreCat | DOI
 
[20]
2022 | Journal Article | LibreCat-ID: 32413
Experimental and Numerical Investigation on Manufacturing-Induced Pre-Strain on the Load-Bearing Capacity of Clinched Joints
C.R. Bielak, M. Böhnke, M. Bobbert, G. Meschut, Key Engineering Materials 926 (2022) 1516–1526.
LibreCat | DOI
 
[19]
2022 | Journal Article | LibreCat-ID: 31828
Clinching of Aluminum Materials – Methods for the Continuous Characterization of Process, Microstructure and Properties
R. Kupfer, D. Köhler, D. Römisch, S. Wituschek, L. Ewenz, J. Kalich, D. Weiß, B. Sadeghian, M. Busch, J. Krüger, M. Neuser, O. Grydin, M. Böhnke, C.R. Bielak, J. Troschitz, Journal of Advanced Joining Processes 5 (2022).
LibreCat | DOI
 
[18]
2022 | Journal Article | LibreCat-ID: 34215
Clinching of Aluminum Materials – Methods for the Continuous Characterization of Process, Microstructure and Properties
R. Kupfer, D. Köhler, D. Römisch, S. Wituschek, L. Ewenz, J. Kalich, D. Weiß, B. Sadeghian, M. Busch, J.T. Krüger, M. Neuser, O. Grydin, M. Böhnke, C.R. Bielak, J. Troschitz, Journal of Advanced Joining Processes 5 (2022).
LibreCat | DOI
 
[17]
2022 | Book Chapter | LibreCat-ID: 33003
Development of a Modified Punch Test for Investigating the Failure Behavior in Sheet Metal Materials
M. Böhnke, C.R. Bielak, M. Bobbert, G. Meschut, in: The Minerals, Metals & Materials Series, Springer International Publishing, Cham, 2022.
LibreCat | DOI
 
[16]
2022 | Journal Article | LibreCat-ID: 34572
Experimental and numerical investigation of the influence of multiaxial loading conditions on the failure behavior of clinched joints
M. Böhnke, C.R. Bielak, M. Bobbert, G. Meschut, Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications (2022).
LibreCat | DOI
 
[15]
2022 | Journal Article | LibreCat-ID: 30100
Provision of cross-domain knowledge in mechanical joining using ontologies
C. Zirngibl, P. Kügler, J. Popp, C.R. Bielak, M. Bobbert, D. Drummer, G. Meschut, S. Wartzack, B. Schleich, Production Engineering (2022).
LibreCat | DOI
 
[14]
2022 | Book Chapter | LibreCat-ID: 34210
Development of a Numerical 3D Model for Analyzing Clinched Joints in Versatile Process Chains
C.R. Bielak, M. Böhnke, M. Bobbert, G. Meschut, in: The Minerals, Metals & Materials Series, Springer International Publishing, Cham, 2022.
LibreCat | DOI
 
[13]
2022 | Journal Article | LibreCat-ID: 30962
Numerical investigation of a friction test to determine the friction coefficients for the clinching process
C.R. Bielak, M. Böhnke, M. Bobbert, G. Meschut, Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications (2022).
LibreCat | DOI
 
[12]
2022 | Journal Article | LibreCat-ID: 30963
Numerical and experimental identification of fatigue crack initiation sites in clinched joints
L. Ewenz, C.R. Bielak, M. Otroshi, M. Bobbert, G. Meschut, M. Zimmermann, Production Engineering 16 (2022) 305–313.
LibreCat | DOI
 
[11]
2022 | Journal Article | LibreCat-ID: 34069
A Review on the Modeling of the Clinching Process Chain - Part I: Design Phase
B. Schramm, S. Martin, C. Steinfelder, C.R. Bielak, A. Brosius, G. Meschut, T. Tröster, T. Wallmersperger, J. Mergheim, Journal of Advanced Joining Processes 6 (2022).
LibreCat | DOI
 
[10]
2022 | Journal Article | LibreCat-ID: 34068
A Review on the Modeling of the Clinching Process Chain - Part II: Joining Process
B. Schramm, J. Friedlein, B. Gröger, C.R. Bielak, M. Bobbert, M. Gude, G. Meschut, T. Wallmersperger, J. Mergheim, Journal of Advanced Joining Processes (2022).
LibreCat | DOI
 
[9]
2022 | Journal Article | LibreCat-ID: 29951 | OA
Numerical investigation of the clinched joint loadings considering the initial pre-strain in the joining area
S. Martin, C.R. Bielak, M. Bobbert, T. Tröster, G. Meschut, Production Engineering (2022).
LibreCat | DOI | Download (ext.)
 
[8]
2021 | Conference Paper | LibreCat-ID: 20807 | OA
Further development of a numerical method for analyzing the load capacity of clinched joints in versatile process chains
C.R. Bielak, M. Böhnke, M. Bobbert, G. Meschut, in: ESAFORM 2021, n.d.
LibreCat | DOI | Download (ext.)
 
[7]
2021 | Journal Article | LibreCat-ID: 21810
Modeling of Stiffness Anisotropy in Simulation of Self-Piercing Riveted Components
M. Otroshi, G. Meschut, C.R. Bielak, L. Masendorf, A. Esderts, Key Engineering Materials 883 (2021) 35–40.
LibreCat | DOI
 
[6]
2021 | Conference Paper | LibreCat-ID: 21811
Development of a Method for the Identification of Friction Coefficients in Sheet Metal Materials for the Numerical Simulation of Clinching Processes
M.S. Rossel, M. Böhnke, C.R. Bielak, M. Bobbert, G. Meschut, in: Sheet Metal 2021, Trans Tech Publications Ltd, 2021, pp. 81–88.
LibreCat | DOI
 
[5]
2021 | Journal Article | LibreCat-ID: 25556 | OA
Concept development of a method for identifying friction coefficients for the numerical simulation of clinching processes
M. Böhnke, M.S. Rossel, C.R. Bielak, M. Bobbert, G. Meschut, The International Journal of Advanced Manufacturing Technology (2021).
LibreCat | DOI | Download (ext.)
 
[4]
2021 | Journal Article | LibreCat-ID: 34227
Development of a Method for the Identification of Friction Coefficients in Sheet Metal Materials for the Numerical Simulation of Clinching Processes
M.S. Rossel, M. Böhnke, C.R. Bielak, M. Bobbert, G. Meschut, Key Engineering Materials 883 (2021) 81–88.
LibreCat | DOI
 
[3]
2021 | Conference Paper | LibreCat-ID: 34222
Influence of rivet length on joint formation on self-piercing riveting process considering further process parameters
F. Kappe, C.R. Bielak, V. Sartisson, M. Bobbert, G. Meschut, in: ESAFORM 2021, University of Liege, 2021.
LibreCat | DOI
 
[2]
2020 | Journal Article | LibreCat-ID: 20678
Numerical analysis of the robustness of clinching process considering the pre-forming of the parts
C.R. Bielak, M. Böhnke, R. Beck, M. Bobbert, G. Meschut, Journal of Advanced Joining Processes. (2020).
LibreCat | DOI
 
[1]
2020 | Conference Abstract | LibreCat-ID: 20344 | OA
Development of a numerical method for analyzing the robustness of clinching in versatile process chains
C.R. Bielak, M. Böhnke, M. Bobbert, G. Meschut, in: Material Science and Engineering Congress - MSE 2020, n.d.
LibreCat | Files available
 
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