【摘要】：為可靠獲取爆炸沖擊波超壓參數(shù),設(shè)計(jì)一種鋁箔薄膜結(jié)構(gòu)進(jìn)行實(shí)驗(yàn)。通過控制材料狀態(tài)、結(jié)構(gòu)頻率特性等參數(shù),使其滿足一定毀傷準(zhǔn)則,建立力學(xué)模型對其進(jìn)行分析。利用激波管裝置對薄膜變形進(jìn)行標(biāo)定,并將激波反射載荷轉(zhuǎn)換為入射壓,采用最小二乘法進(jìn)行線性擬合,得到薄膜最大變形撓度與激波入射壓峰值之間關(guān)系。結(jié)果表明,可通過鋁箔薄膜最大變形撓度反映爆炸場中0.05~0.35 MPa范圍內(nèi)的入射沖擊波超壓,為沖擊波測試工程應(yīng)用提供新的途徑。
[Abstract]:In order to obtain the explosion shock wave overpressure parameters, an aluminum foil film structure was designed. By controlling the parameters of material state and structure frequency characteristic, the damage criterion is satisfied, and the mechanical model is established to analyze it. The film deformation was calibrated by shock tube device, and the shock wave reflection load was converted into incident pressure. The linear fitting was carried out by using the least square method. The relationship between the maximum deformation deflection of the film and the peak incident pressure of the shock wave was obtained. The results show that the maximum deformation deflection of the aluminum foil film can reflect the overpressure of the incident shock wave in the range of 0. 05 ~ 0. 35 MPa in the explosion field, which provides a new way for the engineering application of shock wave testing.
【作者單位】： 西安近代化學(xué)研究所;南京理工大學(xué)機(jī)械工程學(xué)院;
【基金】：國家自然科學(xué)基金(11372143)
【分類號】：TJ01;O384

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