仪表板气囊静态点爆试验典型失效形式研究

Research on the Typical Failure Forms of the Instrument Panel Airbag Static Explosion Test

摘要: 针对仪表板气囊静态点爆试验过程中，仪表板表皮飞出、仪表板上体碎裂、气囊支架铰链碎裂、气囊囊袋破孔，四种典型失效形式进行分析讨论。结果表明：对于发泡仪表板，提高表皮的性能、表皮与泡沫层的粘接力，可避免表皮飞出，增加气囊支架铰链止断筋的宽度会缓解铰链断裂。对于硬质仪表板，上体存在吸能结构可降低气囊门撞碎上体的风险。增加囊袋织物密度和基布层数，会降低囊袋破孔的几率。

Abstract: The instrument panel skin flying out, the instrument panel body fragmentation, the airbag bracket hinge fragmentation, and the airbag bag rupture in the instrument panel airbag static explosion test are analyzed and discussed. The results show that for the foamed instrument panel, improving the performance of the skin and the adhesion between the skin and the foam layer can prevent the skin from flying out, and increasing the width of the airbag bracket hinge stop ribs will relieve the hinge fracture. For hard instrument panels, an energy-absorbing structure on the upper body can reduce the risk of the airbag door smashing the upper body. Increasing the fabric density of the pouch and the number of base fabric layers will reduce the probability of pouch holes.