Effect of thin viscoelastic material treatments of the clamping region on dynamic stiffness of the cantilever beams
2013 (English)In: Proceedings of the International Conference on Advanced Manufacturing Engineering and Technologies NEWTECH 2013: Volume 1 / [ed] Andreas Archenti and Antonio Maffei, Stockholm: KTH Royal Institute of Technology, 2013, p. 313-322Conference paper, Published paper (Refereed)
Abstract [en]
Cantilever beams and similar structures are found in machining systems. Often a set of cantilever beams attached to each other on spindle-tool holder and tool holder-cutter interfaces position the cutting edge with respect to the workpiece. Small static stiffness leads to deformations and geometrical errors due to the process forces, while small dynamic stiffness initiates chatter vibrations. Dynamic stiffness of structures could be improved by passive or active damping methods. Passive damping methods are suitable design choices considering their low cost and ease of application. In this paper, the constrained layer damping (CLD) method is compared to the application of viscoelastic damper materials on the clamping region and the resulting improvements are compared in terms of enhancement of damping ratio and dynamic stiffness. The maximum enhancement of dynamic stiffness was 487% using a thick layer of viscoelastic material on the clamping region. The effect of the thickness of the viscoelastic material is also studied which shows a linear increase in dynamic stiffness as the thickness of the viscoelastic layer increases.
Place, publisher, year, edition, pages
Stockholm: KTH Royal Institute of Technology, 2013. p. 313-322
Keywords [en]
Passive Damping, Viscoelastic, Dynamic Stiffness, Work-integrated Learning, WIL
Keywords [sv]
AIL
National Category
Production Engineering, Human Work Science and Ergonomics
Research subject
ENGINEERING, Manufacturing and materials engineering; Work Integrated Learning
Identifiers
URN: urn:nbn:se:hv:diva-5693ISBN: 978-91-7501-892-8 (print)OAI: oai:DiVA.org:hv-5693DiVA, id: diva2:662176
Conference
International Conference on Advanced Manufacturing Engineering and Technologies. NEWTECH 2013. Stockholm, Sweden 27-30 October 2013
Funder
EU, European Research Council2013-11-062013-11-062023-04-14Bibliographically approved