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Release-type radial wall motion in a hollow rod–lumped mass system: A three-mode theory for axial impact
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DOI：10.1016/j.ijimpeng.2026.105874.png)
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Abstract
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• A 3-mode theory for hollow rods incorporates release-type wall motion. • An effective shear correction factor is calibrated via force equilibrium. • Lateral inertia is decoupled into overall wall motion and thickness distortion components. • Lumped mass gives large stain increase and a delayed strain peak.
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