Acoustic modeling of micro-lattices obtained by additive manufacturing

被引：55

作者：

Boulvert, Jean ^{[1
,2
,3
]}

Costa-Baptista, Josue ^{[1
]}

Cavalieri, Theo ^{[2
,3
]}

Perna, Maxime ^{[1
]}

Fotsing, Edith Roland ^{[1
]}

Romero-Garcia, Vicente ^{[2
]}

Gabard, Gwenael ^{[2
]}

Ross, Annie ^{[1
]}

Mardjono, Jacky ^{[3
]}

Groby, Jean-Philippe ^{[2
]}

机构：

[1] Polytech Montreal, Mech Engn, LAVA, 2900 Blvd Edouard Montpetit, Montreal, PQ H3T 1J4, Canada

[2] Le Mans Univ, LAUM, UMR CNRS 6613, Ave Olivier Messiaen, F-72085 Le Mans 9, France

[3] Safran Aircraft Engines, F-77550 Moisy Cramayel, France

来源：

APPLIED ACOUSTICS | 2020年 / 164卷

基金：

加拿大自然科学与工程研究理事会;

关键词：

ABSORPTION;

D O I：

10.1016/j.apacoust.2020.107244

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

The acoustic behavior of 3D printed micro-lattices is investigated to assess the impact of defects induced by the Fused Deposition Modeling technique on the parameters of the equivalent fluid medium. It is shown that the manufacturing process leads to three types of non-trivial defects: elliptical filament section, filament section shrinkage and filament surface rugosity. Not considering these defects may lead to acoustic predictions errors such as an underestimation of around 0.1 of the rigid backing absorption coefficient. Inverse characterization of seven homogeneous samples allows to fit the acoustic prediction model considering this kind of defects. (C) 2020 Elsevier Ltd. All rights reserved.

引用

页数：9

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