About this Abstract |
Meeting |
2024 ASC Technical Conference, US-Japan Joint Symposium, D30 Meeting
|
Symposium
|
2024 ASC Technical Conference, US-Japan Joint Symposium, D30 Meeting
|
Presentation Title |
Dynamic Response of Liquid Composite Reinforced Thin-Walled Tube |
Author(s) |
Mingzhe Li, Fuming Yang, Robert McCoy, Weiyi Lu |
On-Site Speaker (Planned) |
Weiyi Lu |
Abstract Scope |
Thin-walled tubes are widely utilized as energy absorption structures in automotive and aerospace applications due to their lightweight, high energy absorption efficiency, and cost-effectiveness. The energy absorption efficiency of thin-walled structures has not been maximized yet because of the deviation between high initial peak force and low mean crushing force. Solid foams fillers have been used to close this gap. Although the resulted composite tubes has improved performance, interfacial failure occurs and the filler-tube wall interaction is weakened during the crushing process.
To tackle this challenge, we have developed a new type of liquid composite (LC) filler, which is composed of hollow glass microspheres and DI water. The crushing behavior of LC-filled tubes has been investigated by quasi-static compression and blunt impact tests. The fluid-like and highly compressible nature of the LC enable stabilized interaction between the liquid composite filler and the tube wall throughout the entire deformation process.
It has been demonstrated that the use of LC filler substantially enhances the specific energy absorption of the thin-walled tube by 43% under both quasi-static compression and blunt impact. This improvement is attributed to the high energy absorption efficiency of the LC, and more importantly the significantly enhanced interaction between the LC filler and the tube wall quantified by a strengthening coefficient of 4.0. This value is considerably higher than those of other solid fillers.
In summary, LC is a superior filler for thin-walled structures and facilitates a paradigm shift in the design of next generation energy absorption composite structures. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |