Influence of Weakening Grooves on Explosive Separation of Carbon Fiber Woven Composite Plates

To improve energy utilization efficiency and reduce shock hazards in explosive separation processes for carbon fiber woven composites, this study introduces an innovative separation method that uses symmetrical rectangular weakening grooves prefabricated on both sides of the composite panels, combined with linear shaped-charge cutting techniques. Through integrated numerical simulation and experimental validation, this research utilizes Autodyn simulation software to investigate jet formation states, composite material velocities, and energy variation trends across different explosive separation configurations. Comparative analysis of simulation outputs and experimental measurements elucidates how rectangular weakening grooves and composite groove structures, optimized based on linear jet development characteristics, influence the explosive separation performance of composite material plates. Results demonstrate that the proposed explosive separation method can effectively separate composite materials while preventing extensive delamination during the impact process. The composite groove configuration optimizes jet expansion space, markedly enhancing jet velocity and penetration capacity while minimizing fragment impact on adjacent components.