Experimental Design of Microfluidic Visual Camouflage System and Its Flow Characteristics Analysis
An innovative experiment has been proposed to simulate chameleon skin by using a microfluidic visual camouflage system that controls the circulation of colored liquids in the microchannels of a camouflage film to achieve dynamic camouflage.For the camouflage film,nonlinear,hyperelastic materials are prepared,and static mechanical property tests are conducted.Appropriate strain energy density functions are selected to fit the experimental data and obtain reasonable model parameters.Single and bidirectional fluid-structure interaction simulation models are used to compare the liquid flow characteristics of the microfluidic visual camouflage system and the effects of flow rate on pressure and velocity distributions.Experimental tests are conducted to verify the simulation results of liquid flow pressure loss within the microchannels,determine the system's power and provide a reliable basis for designing the microfluidic visual camouflage system.The experiment and simulation analysis of liquid flow in the microchannels effectively expands traditional experimental teaching scenarios and diversifies the forms of experimental teaching.