摘要
采用有限元方法,分析了不同形状与厚度的硅橡胶均压层对半豆荚杆先进拉挤成型时接触压力分布的影响,并以离散系数评价压力分布均匀性的优劣.结果表明：在5 ～50mm厚度范围内,无论增加等距面硅橡胶的垂向厚度还是平移面硅橡胶的竖向厚度,压力分布的离散系数均呈现出先减小后增大的变化趋势,模具型面上接触压力的均匀性先提高后降低;采用竖向厚度为10mm的平移面硅橡胶,模具型面上的接触压力分布最均匀,压力分布的离散系数最小,仅为0.8％.
The effects of different shapes and thicknesses of silicone rubber on the contact pressure distribution during advanced pultrusion processing for half lentieular tube were studied using finite element method, and the dispersion coefficient was used to evaluate the uniformity of the contact pressure. The results indicate that the dispersion coefficient decreases and then increases with the increase of vertical thickness of offset surface silicone rubber or vertical thickness of translated surface silicone rubber at the thickness range from 5mm to 50ram, which means the uniformity of the contact pressure improves initially and then declines. Also when the vertical thickness of translated surface silicone rubber is 10mm, the dispersion coefficient is the lowest, only 0.8% , which indicates that the contact pressure is the most uniform.
出处
《航空材料学报》
EI
CAS
CSCD
北大核心
2015年第6期20-26,共7页
Journal of Aeronautical Materials
基金
上海航天科技创新基金(SAST201471)
装备预先研究项目(61701080602)
关键词
半豆荚杆
先进拉挤
热压模具
硅橡胶
接触压力
有限元分析
half lenticular tube
advanced pultrusion
hot-pressing mold
silicone rubber
contact pressure
finite element analysis
