Design of smart sandwich structures enhanced by multi-functional shear thickening fluids (M-STFs): Anti-vibration and electrical conductivity

被引：10

作者：

Sheikhi, Mohammad Rauf ^{[1
,2
,3
,4
]}

Gurgen, Selim ^{[5
]}

Li, Jian ^{[1
,2
,3
]}

Sofuoglu, Mehmet Alper ^{[6
]}

Hasanzadeh, Mahdi ^{[7
]}

Kushan, Melih Cemal ^{[5
]}

Chen, Zhenmao ^{[4
]}

机构：

[1] Cent South Univ, Dept Civil Engn, Changsha 410075, Peoples R China

[2] Cent South Univ, Sch Traff & Transportat Engn, Key Lab Traff Safety Track, Minist Educ, Changsha 410075, Hunan, Peoples R China

[3] Natl & Local Joint Engn Res Ctr, Safety Technol Rail Vehicle, Changsha 410075, Hunan, Peoples R China

[4] Xi An Jiao Tong Univ, Sch Aerosp Engn, State Key Lab Strength & Vibrat Mech Struct, Shaanxi ERC NDT & Struct Integr Evaluat, Xian 710049, Peoples R China

[5] Erciyes Univ, Dept Aeronaut Engn, Kayseri, Turkiye

[6] Kocaeli Univ, Dept Mech Engn, Kocaeli, Turkiye

[7] Yazd Univ, Dept Text Engn, Yazd, Iran

来源：

COMPOSITE STRUCTURES | 2023年 / 324卷

关键词：

Composite Sandwich Structures; Shear Thickening Fluid; Rheology; Vibration Attenuation; Modal Analysis; Carbon Nanotubes; CARBON NANOTUBES; THERMAL-PROPERTIES; DAMPING PROPERTIES; PARTICLE-SIZE; PERFORMANCE; RESISTANCE; BEHAVIOR; TEMPERATURE; SUSPENSIONS; DAMPER;

D O I：

10.1016/j.compstruct.2023.117520

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

This study investigates a novel concept of integrating multi-functional shear thickening fluids (M-STFs) into the core layer of a sandwich composite consisting of polyvinyl chloride (PVC) foam and aluminum face sheets to enhance the vibration damping of the structure. First, high-performance STF (60 wt% SiO2) was produced and M-STFs were created by gradually adding multi-walled carbon nanotubes (MWCNTs) up to 1.5 wt%. The percolation threshold range was obtained and the effects of increasing MWCNTs up to 1.5 wt% to STF on reducing electrical resistance and improving rheological properties were investigated. Secondly, sandwich structures consisting of aluminum face sheets and PVC foam core layers were made. The smart nanofluids STF and M-STFs were added to sandwich structures through the grooves created in the PVC foam core. Six different configurations were designed to investigate the effects of adding STF and M-STFs on the vibration damping performance of the sandwich structures. The model analysis results showed that the M-STFs integration into the core layer of designed sandwich structures significantly enhances the damping ratio of the structures as well as provides a higher stiffness coefficient. It was observed that the sandwich structure filled with 1.0 wt% MWCNT exhibits the highest damping ratio and stiffness.

引用

页数：12