基于分支结构的弹体模态特性分析

Model Analysis of Projectile Based on Branching Structure

对于具有大展弦比弹翼的弹体结构,简单的质点-梁结构模型已经不能有效模拟其模态行为,计算结果偏大,且会发生模态缺失。本文建立带分支结构的集中质点-梁模型。经过计算分析以及试验对比表明带分支结构的质点-梁模型能较好的模拟具有大展弦弹翼的弹体模态。

The model characteristics of structure were directly related to the quality of product development.The simple particle-beam model cannot simulate the modal behavior of the large ratio projectile wing.The result is often too large and the modal missing will occur.A lumped particle-beam model with branching structure was established in the paper.The results of calculation and experiments show that the particle-beam model with branching structure can simulate the modal of the body with large wing.