Interaction between underwater explosion shock wave and composite laminates
Composite materials have excellent characteristics such as lightweight and high strength.They have extens-ive potential applications in the fields of ship structure safety and lightweight.Using acoustic-structure coupling method to make a numerical analysis model for the interaction between underwater explosive shock wave and carbon fiber-reinforced epoxy resin-based composite laminates.It investigates the interaction between shock wave and composite structure,elucid-ates the mechanism of underwater explosive energy distribution,and verifies the reliability of the acoustic-structure coupling progressive damage analysis method.On this basis,the influence of laminate thickness and structural materials on the inter-action relationship was studied.The research results indicate that when explosive shock waves act on a composite laminate,31％of the shock wave energy distributes through damage and vibration in the target plate,while 69％of the en-ergy reflects back into the water under the elastic effect of the target plate;As the thickness of the composite laminates in-creases,the proportion of reflected energy gradually increases,while the proportion of absorbed energy decreases,resulting in reduced internal damage and deformation of the plate.Under the same underwater explosive shock loading,the composite laminates exhibit superior impact resistance compared to equally massed 5A06 aluminum and Q235 steel.
underwater explosion shock wavecomposite laminatesinteraction relationshipenergy distribution mechanism
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