Strength Analysis And Structure Optimum Design Of Fin-stabilited Sabot Discarded Penetrator

This thesis presents theoretic analysis, numerical simulation and calculational studies on dynamic launching strength and vibration analysis during launching and structure optimization design of 30 fin-stabilited sabot-discarded penetrator.A finite element method model of three-dimension strength and vibration analysis for a fin-stabilited sabot-discarded penetrator is established. Using ANSYS software, calculate the strength of fin-stabilited sabot-discarded penetrator during launching, and optimize construction of the projectile body for fin-stabilited sabot-discarded penetrator, giving satisfactory results.By the finite element method model, Natural frequency and vibration model of some project fin-stabilitde sabot-discarded penetrator during launching are calculated and analyzed.Based on the gas pressure distribution and its variation during launching, the vibration graph of the projectile are calculated under transient response. According to the calculation results of dynamic strength analysis and vibration responses, the probable reason of the in-bore accident for fin-stabilited sabot-discarded penetrator is analyzed.The research achievement provides valuable theory and advanced engineering method for engineering design, manufacture, improve and accident analysis of fin-stabilited sabot-discarded penetrator, and it has higher practical value to improve quality and efficiency of design, and reduce design cost for fin-stabilited sabot-discarded penetrator.