Study on impulse-driven release dynamics and near-field load characteristics of gas-encapsulated drops

Key Points

• The study examines how the eccentricity of gas-encapsulated drops affects their dynamics and hydrodynamic loads during impulse-driven release processes.
• Used a solid-fluid coupling numerical model to analyze the release dynamics of gas-encapsulated drops under shock wave effects.
• Investigated the interaction between drops and an elastic sheet, focusing on variations in drop eccentricity.
• Analyzed the stages of gas shell collapse, interface collision, and jet ejection with experimental simulations.
• Gas-encapsulated drops experience multiple stages including gas shell collapse and rebound, resulting in a double peak in load characteristics.
• First peak generated by jet impact, while second peak induced by gas layer rebound, deepening plastic damage.
• Higher pressure loads, energy absorption, and equivalent plastic strain produced in the central region compared to single bubbles.