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Dynamic instability in curved beams postprint

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Abstract: This study investigates the nonlinear variation of dynamic instability and strength drop in plastic curved beams with initial configurations and lateral pulse velocity parameters.It is found that the dynamic jump instability of curved beams leads to significant strength loss,where the maximum height in the initial configuration plays a crucial role in its buckling instability.Lateral pulse velocity is one of the main factors causing dynamic instability and strength degradation in curved beams.The viscous damping coefficient has minimal impact on the system's maximum strength and the overall time for instability,but a smaller viscous damping coefficient can lead to extreme instability of the system.These findings are significant for the design and optimization of curved beam structures,revealing the buckling instability mechanism of curved beams and their important relationship with structural parameters.

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[V1] 2025-02-13 13:59:43 ChinaXiv:202502.00092V1 Download
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