Cellular mechanical metamaterials

Metamaterials are artificial structures with extraordinary properties as result of their internal architecture. We are investigating mechanical metamaterials manufactured by SEBM. We investigate auxetic materials characterized by a negative Poisson’s ratio as well as phononic band gap materials. Structure design rests upon basic knowledge about mechanisms generated by numerical simulation.

• Wormser M., Kiefer DA., Rupitsch S., Körner C.:
  Comparison of Transmission Measurement Methods of Elastic Waves in Phononic Band Gap Materials
  In: Materials (2021)
  ISSN: 1996-1944
  DOI: 10.3390/ma14051133
• Warmuth F.:
  Zellulare mechanische Metamaterialien: Design, Herstellung und Charakterisierung (Dissertation, 2021)
• Wormser M., Adler L., Körner C.:
  Mechanische zellulare Metamaterialien aus Metall durch Selektives Elektronenstrahlschmelzen
  In: DGM (ed.): Materialwissenschaft und Werkstofftechnik: Zellulare Werkstoffe · Zellulare Materialien, 2018, p. 16-24 (Dialog, Vol.2/2018)
• Novak N., Borovinsek M., Vesenjak M., Wormser M., Körner C., Tanaka S., Hokamoto K., Ren Z.:
  Crushing Behavior of Graded Auxetic Structures Built from Inverted Tetrapods under Impact
  In: physica status solidi (b) (2018)
  ISSN: 0370-1972
  DOI: 10.1002/pssb.201800040
• Wormser M., Wein F., Stingl M., Körner C.:
  Design and Additive Manufacturing of 3D Phononic Band Gap Structures Based on Gradient Based Optimization
  In: Materials 10 (2017)
  ISSN: 1996-1944
  DOI: 10.3390/ma10101125
• Wormser M., Warmuth F., Körner C.:
  Evolution of full phononic band gaps in periodic cellular structures
  In: Applied Physics A: Solids and Surfaces (2017), Article No.: 123:661
  ISSN: 0721-7250
  DOI: 10.1007/s00339-017-1278-6
• Warmuth F., Wormser M., Körner C.:
  Single phase 3D phononic band gap material
  In: Scientific Reports (2017), Article No.: 3843
  ISSN: 2045-2322
  DOI: 10.1038/s41598-017-04235-1
• Warmuth F., Adler L., Osmanlic F., Lodes M., Körner C.:
  Fabrication and characterisation of a fully auxetic 3D lattice structure via selective electron beam melting
  In: Smart Materials and Structures 26 (2017), Article No.: 025013
  ISSN: 1361-665X
  DOI: 10.1088/1361-665X/26/2/025013
• Adler L., Warmuth F., Lodes M., Osmanlic F., Körner C.:
  The effect of a negative Poisson's ratio on thermal stresses in cellular metallic structures
  In: Smart Materials and Structures 25 (2016), Article No.: 115038
  ISSN: 1361-665X
  DOI: 10.1088/0964-1726/25/11/115038
• Schwieger W., Thangaraj T., Warmuth F., Warnick KG., Klumpp M., Lodes M., Körner C.:
  Fabrication and pressure drop behavior of novel monolithic structures with zeolitic architectures
  In: Chemical Engineering Journal 288 (2016), p. 223-227
  ISSN: 1385-8947
  DOI: 10.1016/j.cej.2015.11.104
• Körner C., Warmuth F.:
  Phononic band gaps in 2D quadratic and 3D cubic cellular structures
  In: Materials 8 (2015), p. 8327-8337
  ISSN: 1996-1944
  DOI: 10.3390/ma8125463
• Körner C., Liebold Ribeiro Y.:
  A systematic approach to identify cellular auxetic materials
  In: Smart Materials and Structures 24 (2015), Article No.: 025013
  ISSN: 1361-665X
  DOI: 10.1088/0964-1726/24/2/025013
• Liebold Ribeiro Y., Körner C.:
  Phononic band gaps in periodic cellular materials
  In: Advanced Engineering Materials 16 (2014), p. 328-334
  ISSN: 1438-1656
  DOI: 10.1002/adem.201300064
• Klumpp M., Inayat A., Schwerdtfeger J., Körner C., Singer R., Freund H., Schwieger W.:
  Periodic open cellular structures with ideal cubic cell geometry: Effect of porosity and cell orientation on pressure drop behavior
  In: Chemical Engineering Journal 242 (2014), p. 364-378
  ISSN: 1385-8947
  DOI: 10.1016/j.cej.2013.12.060
• Klassen A., Bauereiß A., Körner C.:
  Modelling of electron beam absorption in complex geometries
  In: Journal of Physics D-Applied Physics 47 (2014), Article No.: 065307
  ISSN: 0022-3727
  DOI: 10.1088/0022-3727/47/6/065307
• Schwerdtfeger J., Schury F., Stingl M., Wein F., Singer R., Körner C.:
  Mechanical characterisation of a periodic auxetic structure produced by SEBM
  In: physica status solidi (b) 249 (2012), p. 1347-1352
  ISSN: 0370-1972
  DOI: 10.1002/pssb.201084211
• Schwerdtfeger J., Wein F., Leugering G., Singer R., Körner C., Stingl M., Schury F.:
  Design of Auxetic Structures via Mathematical Optimization
  In: Advanced Materials 23 (2011), p. 2650--2654
  ISSN: 0935-9648
  DOI: 10.1002/adma.201004090
• Mitschke H., Schwerdtfeger J., Schury F., Stingl M., Körner C., Singer R., Robins V., Mecke K., Schröder-Turk G.:
  Erratum: Finding auxetic frameworks in periodic tessellations
  In: Advanced Materials 23 (2011), p. 2669-2674
  ISSN: 0935-9648
  DOI: 10.1002/adma.201190118
• Mitschke H., Schwerdtfeger J., Schury F., Stingl M., Körner C., Singer R., Robins V., Mecke K., Schröder-Turk G.:
  Finding Auxetic Frameworks in Periodic Tessellations
  In: Advanced Materials 23 (2011), p. 2669-2674
  ISSN: 0935-9648
  DOI: 10.1002/adma.201100268
• Inayat A., Schwerdtfeger J., Freund H., Körner C., Singer R., Schwieger W., Freund H.:
  Periodic open-cell foams: Pressure drop measurements and modeling of an ideal tetrakaidecahedra packing
  In: Chemical Engineering Science 66 (2011), p. 2758-2763
  ISSN: 0009-2509
  DOI: 10.1016/j.ces.2011.03.031
• Schwerdtfeger J., Heinl P., Singer R., Körner C.:
  Auxetic cellular structures through selective electron-beam melting
  In: physica status solidi (b) 247 (2010), p. 269-272
  ISSN: 0370-1972
  DOI: 10.1002/pssb.200945513
• Körner C., Schwerdtfeger J., Singer R.:
  Auxetic Cellular Metals
  MetFoam 2009 - 6th International Conference on Porous Metals and Metallic foams (Bratislava, 2. September 2009 - 4. September 2009)
  In: MetFoam 2009 - Proceedings of the 6th International Conference on Porous Metals and Metallic Foams 2009
• Schwerdtfeger J., Heinl P., Singer R., Körner C.:
  Selective Electron Beam Melting: A new way to auxetic cellular structures
  20th Annual International Solid Freeform Fabrication Symposium, SFF 2009 (Austin, TX)
  URL: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84892631091&origin=inward
• Rudolf D., Fink A., Körner C., Freund H.:
  Thermo-Mechanical Study on Auxetic Shape Memory Periodic Open Cellular Structures—Part I: Characterization of Reentrant Geometry and Effective Heat Conductivity
  In: Advanced Engineering Materials (2024)
  ISSN: 1438-1656
  DOI: 10.1002/adem.202401717
• Fink A., Rudolf D., Wahlmann B., Freund H., Körner C.:
  Thermo‐mechanical Study on Auxetic Shape Memory Periodic Open Cellular Structures—Part II: Mechanical and Shape Memory Properties
  In: Advanced Engineering Materials 26 (2024)
  ISSN: 1438-1656
  DOI: 10.1002/adem.202401310