Analysis of Energy Absorption Characteristics of Corrugated/Windowed Double-Tube Composite Structure Filled with Shear Thickening Fluid

Corrugated tubes with a unique corrugated surface are widely used in various engineering applications due to their ability to reduce impact forces. However, the energy absorption capacity of these tubes is limited. To enhance the energy absorption capabilities, a corrugated/windowed double-tube (CWT) composite structure filled with Shear Thickening Fluid (STF) was designed. The energy absorption characteristics of the CWT composite structure filled with STF were investigated through dynamic low-speed compression tests and finite element simulations. The results demonstrated that the CWT composite structure filled with STF exhibited significant energy absorption advantages compared to both single tube structures and empty tube composite structures. Specifically, the CWT composite structure filled with STF at a concentration of 25% showcased the most effective energy absorption performance. Moreover, the filled CWT composite structure demonstrated superior energy absorption when the STF filling volume reached 85% in the dynamic simulations.