本文關(guān)鍵詞： 空氣襯墊 充氣壓力 薄膜變形 緩沖性能 沖擊試驗　出處：《振動與沖擊》2016年20期 　論文類型：期刊論文

【摘要】：為分析充氣壓力對空氣襯墊緩沖防護(hù)性能的影響,綜合空氣墊薄膜材料的拉伸變形和氣室的壓縮變形,建立了空氣墊的沖擊壓縮力學(xué)模型。分析表明增大充氣壓力的總體效果是將使氣墊的動剛度、承受的沖擊載荷下降。原因是增大充氣壓力將使氣墊薄膜在沖擊過程的拉伸變形增大,氣墊的體積比V0/Vt減小,而體積比在動剛度模型中是比充氣壓力更高階的項。結(jié)合空氣墊的彈性變形吸能機(jī)理分析,表明氣墊薄膜的彈性變形可延長沖擊載荷作用時間和吸能時間,從而提高空氣墊的緩沖防護(hù)性能。對不同充氣壓力和氣室寬度的空氣墊,用7.5 kg的重錘進(jìn)行沖擊試驗,結(jié)果表明:在不超過薄膜彈性限值的前提下,增大氣墊的充氣壓力可降低氣墊承受的沖擊載荷峰值,提高氣墊的緩沖防護(hù)性能,充氣壓力每增加20 k Pa,沖擊載荷峰值降低10%以上。
[Abstract]:In order to analyze the effect of inflatable pressure on the cushion and protection performance of air cushion, the tensile deformation of air cushion film and the compression deformation of air chamber were synthesized. The impact compression mechanics model of air cushion is established. The analysis shows that the overall effect of increasing inflatable pressure is to make the dynamic stiffness of air cushion. The reason is that the inflatable pressure will increase the tensile deformation of the air cushion film during the impact process, and the volume of the air cushion will decrease compared with V _ 0 / V _ t. The volume ratio is a higher order term than the inflatable pressure in the dynamic stiffness model. Based on the analysis of the energy absorption mechanism of the elastic deformation of the air cushion, it is shown that the elastic deformation of the air cushion film can prolong the impact load action time and the energy absorption time. So as to improve the cushioning and protection performance of air cushion. The impact test of air cushion with 7.5 kg weight hammer with different inflatable pressure and chamber width shows that: under the condition that the elastic limit of film is not exceeded, Increasing the inflatable pressure of the air cushion can reduce the peak value of the impact load and improve the cushion and protection performance of the air cushion. The peak value of the impact load decreases by more than 10% for every 20 kPA increase of the inflating pressure.
【作者單位】： 哈爾濱商業(yè)大學(xué)輕工學(xué)院;北京塔西爾懸架科技有限公司;哈爾濱卷煙廠;
【基金】：黑龍江省教育廳科學(xué)技術(shù)研究項目(12521130);黑龍江省教育廳研究生創(chuàng)新基金項目(YJSCX2011-179HSD)
【分類號】：TB485.2

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本文編號：1496056