Thermal-structural analysis and design has been a key issue in advanced aeronautics and astronautics projects that involve elevated temperatures and extreme environments. For example, in a hypersonic propulsion system, the scramjet should meet "light weight", "thermal protection" and "thermal strength/stiffness" requirements, which call for new challenge to the structural design. The group focuses on research fields including:
- (i) coupling effects and thermal-fluid-structure interaction in high-speed flights and propulsion systems;
- (ii) cellular sandwich structures, light-weight structures and multi-functional design;
- (iii) high temperature materials and structures;
- (vi) structural integrity at extremely severe and high temperature environments;
- (v) thermal effects, shock effects and failure mechanisms when high power laser interaction with matter.
The group is finically supported by Major National Science & Technology Project, National 863 Project, National NSF of China, Major Science & Technology Project of CAS, Instrument Project of CAS, etc.
(1) Coupled thermal-fluid-structure analysis and design of novel light-weight active cooling structures
Figure 1. Design I: Lattice-framed materials (LFMs) sandwich panels as active cooling channel
Figure 2. Design II: LFMs reinforced active cooling panel
(2) Manufacturing of light-weight LFM panels
Figure 3. Manufacturing of LFMs sandwiches and reinforced active cooling panels
(3) Thermal-mechanical tests on LFMs sandwiches
Figure 4. 3-points bending test of LFM structure
Figure 5. Deformation morphology of pores versus strain
Figure 6. Thermal-buckling test of LFM panel, with 3D DIC measurement, high temperature strain gauges and thermal couple gauges
(4) Laser interactive with flying targets
Figure 7. Thermal structural response of a supersonic flying target irradiated with high power laser
Figure 8. Numerical modeling of the laser ablation and morphology evolution, with 2s intervals.