基于Taguchi方法的复合材料易碎盖结构参数设计

Design for structure parameters of composite frangible cover based on Taguchi's method

为获得冲破性能稳定的复合材料易碎盖,对影响其性能的主要结构参数进行了分析研究。采用Taguchi试验设计方法,分析了结构参数薄弱区高度、内外侧搭接高度及厚度对易碎盖冲破性能的影响规律。结合信噪比、极差分析和指标趋势分析,比较了不同结构参数及因素水平对冲破性能的影响程度,获得了最优薄弱区结构参数组合。结果表明,薄弱区高度对易碎盖冲破性能影响最为显著,内外侧布条搭接高度及厚度对冲破性能影响较小;薄弱区高度为18 mm、内外侧布条搭接高度分别为4 mm和5 mm、搭接厚度分别为0.1 mm和0.2 mm时,易碎盖的冲破性能最接近设计目标;Taguchi方法分析结果与试验结果吻合,验证了该方法的准确性和有效性。

In order to obtain a composite frangible cover with stable failure performance, the main structural parameters were analyzed and researched.The influence of structural parameters such as height of weak zone, height and thickness of inside and outside lapped layers on failure performance of the composite cover was studied by using Taguchi experiment design method.By analysis of signal-to-noise ratio, range analysis and index trend, the effect degree of different structure parameters and factor levels on failure performance were compared and the optimal parameter combination of weak zone structure was obtained.The results show that height of weak zone has significant influences on failure properties of the frangible cover and that the heights and thicknesses of the lapped layers have small effects on them.The failure pressure is most close to the design target when the height of weak zone is 18 mm,and the heights of inside and outside lapped layers are 4 mm and 5 ram,and the thicknesses are 0.1 mm and 0.2 mm respectively.The accuracy and effectiveness of Taguchi method were verified by the experimental results.