| 谢志浩1 ，纪健1 ，刘璐璐 1 ，陈伟1 ，赵振华 2 ，罗刚2.多分散相STF-Kevlar缠绕软壁机匣包容性数值仿真[J].航空发动机,2024,50(6):100-106 |
| Numerical Investigation on Containment Capability of Soft-Wall Casing Wrapped withPolydispersed STF-Kevla |
| DOI： |
| Key Words:soft-wall casing containment numerical simulation shear thickening fluid aramid fabric aeroengine |
|
| 摘要点击次数: 639 |
| 全文下载次数: 360 |
| Abstract:The aeroengine soft-wall casing wrapped with aramid fabric (Kevlar) has the advantages of lightweight and strong containment
capability. Aiming at the design of the application aramid fabric impregnated with Shear Thickening Fluid (STF), which has stronger impact
resistance, on an aeroengine soft-wall containment casing, a numerical model of the soft-wall casing wrapped with polydispersed STF-
impregnated Kevlar fabric was established, and numerical investigations on the containment performance of casings of different types, casings
with different layers of fabrics, and under operating conditions with different blade rotational speeds were carried out. The results showed that
the soft-wall casing wrapped with polydispersed STF-impregnated Kevlar fabric has excellent energy absorption capacity, and its unit mass
energy absorption was 57.4% higher than that of pure aluminum alloy casing and 15.2% higher than that of pure Kevlar-wrapped soft-wall cas?
ing. The more layers of the fabric, the better the containment effect of the soft-wall casing. The soft-wall casing wrapped with three layers of
polydispersed STF-impregnated Kevlar fabric can reduce the kinetic energy of the blade by 94.9%. With the increase of rotational speed, the
casing transits from contained to non-contained, and the contact force between the blade and the casing increases. When the non-contained
event occurs, the damage to the inner wall of the aluminum alloy decreases, and the energy absorption decreases. |
| 查看全文 查看/发表评论 下载PDF阅读器 |
|
|
|
