TY - JOUR
T1 - Numerical and experimental analysis of additively manufactured particle dampers at low frequencies
AU - Guo, Honghu
AU - Ichikawa, Kazuo
AU - Sakai, Hiroyuki
AU - Zhang, Heng
AU - Zhang, Xiaopeng
AU - Tsuruta, Kenji
AU - Makihara, Kanjuro
AU - Takezawa, Akihiro
N1 - Funding Information:
We would like to thank Shosuke Ohseto for his help on the early stage of this work. This work was partially supported by the JST , A-step, Seeds development type ( JPMJTR192A ).
Publisher Copyright:
© 2021 Elsevier B.V.
PY - 2022/1
Y1 - 2022/1
N2 - Particle damping is an effective method for increasing structural damping and is utilized in many fields. Using laser powder bed fusion (LPBF) additive manufacturing (AM), a new integrated particle damper can be produced by deliberately leaving unfused powder inside the structure. This study focuses on experimentally and numerically investigating the damping mechanism and performance of additively manufactured particle dampers in the low-frequency range (< 100 Hz). A numerical simulation approach based on the discrete element method was developed to predict the damping performance of a particle damper. To reduce the computational cost, a multi-unit particle damper (MUPD) was introduced. A series of particle dampers of 316 L stainless steel with different numbers and sizes of unit cells were built using LPBF. The damping mechanism and performance of additively manufactured MUPDs (AM-MUPD) were studied, the results cross-verified via experiments and simulations, and the effects of unit cell size and number investigated.
AB - Particle damping is an effective method for increasing structural damping and is utilized in many fields. Using laser powder bed fusion (LPBF) additive manufacturing (AM), a new integrated particle damper can be produced by deliberately leaving unfused powder inside the structure. This study focuses on experimentally and numerically investigating the damping mechanism and performance of additively manufactured particle dampers in the low-frequency range (< 100 Hz). A numerical simulation approach based on the discrete element method was developed to predict the damping performance of a particle damper. To reduce the computational cost, a multi-unit particle damper (MUPD) was introduced. A series of particle dampers of 316 L stainless steel with different numbers and sizes of unit cells were built using LPBF. The damping mechanism and performance of additively manufactured MUPDs (AM-MUPD) were studied, the results cross-verified via experiments and simulations, and the effects of unit cell size and number investigated.
KW - Additive manufacturing
KW - Discrete element method
KW - Laser powder bed fusion
KW - Particle damper
KW - Specific damping capacity
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U2 - 10.1016/j.powtec.2021.11.029
DO - 10.1016/j.powtec.2021.11.029
M3 - Article
AN - SCOPUS:85119597560
SN - 0032-5910
VL - 396
SP - 696
EP - 709
JO - Powder Technology
JF - Powder Technology
ER -