RESEARCH PAPER
Resonance-Induced Ballistic Premature Detonation in Fuzes: Mul-ti-Evidence Diagnosis and Assembly-Based Vibration Suppression
1
Science and Technology on Electromechanical Dynamic Control Laboratory, Beijing Institute of Technology, China
Submission date: 2025-11-26
Final revision date: 2025-12-24
Acceptance date: 2026-02-18
Online publication date: 2026-03-11
Corresponding author
Guanglin He
Science and Technology on Electromechanical Dynamic Control Laboratory, Beijing Institute of Technology, No. 5 Zhongguancun South Street, Haidian District,, 100081, beijing, China
Science and Technology on Electromechanical Dynamic Control Laboratory, Beijing Institute of Technology, No. 5 Zhongguancun South Street, Haidian District,, 100081, beijing, China
KEYWORDS
TOPICS
ABSTRACT
This study investigates premature detonation failures in an 82 mm grenade fuze using a multiscale framework combining fault tracing, time-frequency analysis, finite element simulation, and modal testing. After eliminating software, hardware, and environmental pathways through fault tree analysis, structural dynamic anomalies were identified as the primary failure mechanism. Time-frequency analysis revealed failures occurring between 34.59 and 35.17 seconds, coinciding with the turbine generator's excitation band of 1160–1240 Hz. Simulations predicted a local bending modal frequency of 1216 Hz, validated experimentally at 1204.10 Hz (0.98% deviation). The third-order mode showed high sensitivity to assembly parameters, with frequency variations reaching 271.5 Hz. A dual-side washer configuration shifted the modal frequency to 985.9 Hz and reduced response amplitudes by 56.44%. Optimized wave springs stabilized frequencies between 987.2 and 1064.6 Hz with 39.39% additional amplitude reduction. Field testing of 40 units validated the "stiffness regulation–interface dissipation" strategy
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| eISSN: | 2956-3860 |
| ISSN: | 1507-2711 |
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