摘要
在考虑着陆场地面弹塑性特点的情况下,建立了返回舱垂直着陆过程的弹塑性接触模型。数值分析结果表明,返回舱的着陆过程与地面土壤的物理性质有很大关系,在相同的弹性模量下,土壤的极限应力越大,则着陆过载最大值就越大,着陆过程中的能量损失就越小,返回舱的"跳跃"现象越明显。
Considering the landing field＇s elastic-plastic characteristic,a model which took the capsule＇s vertical landing as an elastic-plastic contact problem was established.The numerical simulation indicated that the soil＇s bearing capability played an important role during the capsule＇s landing,with the same Young＇s modulus and Poisson＇s ratio： when the soil＇s bearing capability increases,the capsule gets bigger acceleration,less energy loss and higher bounce.
出处
《国防科技大学学报》
EI
CAS
CSCD
北大核心
2010年第6期93-99,共7页
Journal of National University of Defense Technology
基金
国家部委资助项目(2009HK10015)
关键词
返回舱
着陆场地面
弹塑性接触
极限应力
capsule
landing field
elastic-plastic contact
bearing capability
