摘要
该文采用有限段法建立了降落伞拉直过程的动力学模型 .在模型中将伞绳和伞衣离散为若干个绳段 ,各绳段假设为质量集中在端点的阻尼弹簧 ,各绳段结点的运动由作用在相应绳段上的气动阻力及张力来决定 .该模型可以预测降落伞拉直过程中的“绳帆”现象 .利用该模型研究高空突风对降落伞拉直过程的影响 。
A finite element approach is used in which both suspension lines and canopy are modeled as mass damper spring.The motion of each node is determined by the tensile and aerodynamic force acting on the structural segment represented by the node.This model can predict the “LineSail” of parachute deployment.The model has been verified by comparison with experiment data and used to investigate the influence of pilot area on “Linesail”.
出处
《弹道学报》
CSCD
北大核心
2003年第1期31-36,共6页
Journal of Ballistics
