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<p>Directed energy laser weapons are susceptible to vibration and environmental factors, thus making vibration damping essential. Accurate beam control is crucial for maximizing energy impact on the target and ensuring effective damage to its structure. This study proposes the implementation of stable flex mounts (SFM)-52011-55 isolators to mitigate vibrations and fatigue in the housing structure of the laser beam generator. Static analysis is conducted to check the sensitivity of the boundary conditions. Modal analysis is then conducted to obtain natural frequencies and mode shapes of the housing structure. Random vibration analysis is performed, considering power spectral density (PSD) inputs in accordance with MIL-STD-810G. A specific method is applied to obtain an equivalent static load corresponding to the dynamic PSD input. Results indicate that the von Mises stress obtained using the equivalent static load method closely matches the results from the dynamic PSD inputs.</p>

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Structural and random vibration analyses of laser beam generators with isolators for vibration damping

  • 期刊论文

  • 发表日期：

    2025年8月13日

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  • Hyoseon Jang,
  • Hyunggwi Song,
  • Dongjun Kim,
  • Hwanseong Jeong,
  • Baik Jin Kim

摘要

Directed energy laser weapons are susceptible to vibration and environmental factors, thus making vibration damping essential. Accurate beam control is crucial for maximizing energy impact on the target and ensuring effective damage to its structure. This study proposes the implementation of stable flex mounts (SFM)-52011-55 isolators to mitigate vibrations and fatigue in the housing structure of the laser beam generator. Static analysis is conducted to check the sensitivity of the boundary conditions. Modal analysis is then conducted to obtain natural frequencies and mode shapes of the housing structure. Random vibration analysis is performed, considering power spectral density (PSD) inputs in accordance with MIL-STD-810G. A specific method is applied to obtain an equivalent static load corresponding to the dynamic PSD input. Results indicate that the von Mises stress obtained using the equivalent static load method closely matches the results from the dynamic PSD inputs.