Damping behavior of 3D woven metallic lattice materials

SCRIPTA MATERIALIA

卷:106

Article

Ryan, Stephen M.¹  Szyniszewski, Stefan²  Ha, Seunghyun^3,4  Xiao, Rui⁶  Nguyen, Thao D.⁶  Sharp, Keith W.⁵  Weihs, Timothy P.¹  Guest, James K.³  Hemker, Kevin J.^1,6 

[1] Johns Hopkins Univ, Dept Mat Sci & Engn, Baltimore, MD 21218 USA

[2] Univ Surrey, Dept Civil Engn, Guildford GU2 5XH, Surrey, England

[3] Johns Hopkins Univ, Dept Civil Engn, Baltimore, MD 21218 USA

[4] Korea Maritime & Ocean Univ, Dept Ocean Engn, Seoul, South Korea

[5] Saertex USA LLC, Huntersville, NC USA

[6] Johns Hopkins Univ, Dept Mech Engn, Baltimore, MD 21218 USA

关键词: Damping;    Metallic lattice material;    3-D weaving;    Micro-architected materials;    Design;   

DOI  :  10.1016/j.scriptamat.2015.03.010

来源: Elsevier

【 摘 要 】

Cu and NiCr metallic lattice materials of two different micro-architectures were manufactured with a 3D weaving process. Dynamic mechanical analysis experiments demonstrated that the damping properties of these materials are much greater than their bulk counterparts and were found to have damping loss coefficients comparable to polymers, but with much higher maximum use temperatures. The magnitude of the damping phenomenon is characterized experimentally, and the importance of Coulomb (frictional) damping and inertial damping are investigated using a finite element model. (C) 2015 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

【 授权许可】

Free