The analysis in this paper have been verified by experiment firstly , the structure and mechanical characteristics of sliding - plug door are described in this paper . secondly , on the base of the study of the work condition and limited load , the dynamic load - time curve is created . and then the finite element model of sliding - plug door is built by using material equivalent 本文首先總結和探討了塞拉門的結構特點和力學特性;然后探討了塞拉門的極限工況,即列車交會壓力波的作用形式,建立了簡化的作用于塞拉門上的動力學載荷曲線;其次研究了復雜形狀復合材料層合板結構的建模方法,采用物理等效方式減小了計算規(guī)模,建立了復合材料門板的有限元模型,并對各種設定的載荷形式進行了數(shù)值模擬。