本文係針對膠膜式氣囊，採用ANSYS/LS-DYNA有限元素分析軟體，模擬氣囊充氣完畢後之穩態分析。首先，在0.10秒內以均勻壓力施加於氣囊作為負載，並分析不同密度網格分割分析網格密度對氣囊數值計算的影響，以確立網格分割數。其次，使用細繩連結成網狀，進一步模擬膠膜式氣囊特有之網狀結構，並分析氣囊厚度與網狀結構中細繩斷面積對氣囊結構應力分布與氣囊充氣後高度的影響。
　　為探討網狀結構密度對於膠膜式氣囊之影響，分別就氣囊中心點等效應力與其位移進行分析，其次探討在氣囊上半部θ方向與r方向之周圍網狀結構密度對接合處之影響，接下來將於氣囊上、下半部同時以r方向之網狀結構補強對氣囊中心點與周圍接合處作探討。最後選一個具有高密度之r方向補強之網狀結構以驗證所得之結果。

　　This thesis mainly aims at plastic film airbag, and simulates the steady state after the airbag inflated by using a finite element analysis software, ANSYS/LS-DYNA. Firstly, apply uniform pressure on the airbag surface as the inflating loading within 0.01 second, and analyze the effect of the variance of the net structure density to assure mesh density. Then link cables as the net structure and analyze the effect of airbag thickness and cable section diameter on the distribution of airbag stress and the inflated elevation.
　　In order to further discuss the effect of the net structure density, the displacement and von Mises stress of the center of the upper partition of airbag is respectively analyzed. Comparing the net structure’s reinforcing in the θ direction with the r direction, it is clear that the reinforcing net structure in r direction is much more useful than inθ direction. Further more, analyzing the high density net structure with reinforcing in r direction to verify the result.

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