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沖擊波壓力傳感器寄生效應(yīng)抑制方法研究

發(fā)布時間:2018-12-16 11:31
【摘要】:戰(zhàn)斗部爆炸沖擊波測試技術(shù)是戰(zhàn)斗部威力評價的重要研究內(nèi)容,也是目標(biāo)毀傷效果評估的重要依據(jù)。在評價戰(zhàn)斗部毀傷效應(yīng)時,必須對沖擊波壓力進(jìn)行有效測試。本文基于爆炸場寄生效應(yīng)對壓電式壓力傳感器測量沖擊波造成的寄生輸出,開展了沖擊波壓力傳感器寄生效應(yīng)抑制方法研究。在分析爆炸場機(jī)械沖擊和振動產(chǎn)生機(jī)理的基礎(chǔ)上,建立沖擊波壓力傳感器振動力學(xué)模型。基于沖擊和振動對不同環(huán)境下沖擊波壓力測試造成的影響,分別設(shè)計了地面反射壓測量傳感器安裝組件和壁面反射壓測量傳感器安裝組件,通過理論建模和數(shù)值仿真分析該安裝組件的抑制效果;利用ANSYS Workbench平臺仿真,探討了安裝組件在沖擊載荷和振動載荷下的抑制效果,完成了安裝組件隔振材料的選型;開展力錘敲擊模擬實驗,分析了安裝組件抑制機(jī)械沖擊的性能。在分析爆炸場熱沖擊產(chǎn)生機(jī)理的基礎(chǔ)上,提出了一種在傳感器敏感面涂抹硅脂的隔熱方法,通過理論計算和熱力學(xué)仿真,確定了具有最佳抑制效果的隔熱層厚度;通過熱水沖擊模擬實驗,分析涂抹硅脂的抑制性能。最后,基于所采用的寄生效應(yīng)抑制措施,開展爆炸場沖擊波壓力測試試驗,通過對實測信號的數(shù)據(jù)處理與分析,探討抑制措施的合理性。試驗結(jié)果表明,本文所設(shè)計的可抑制沖擊和振動的傳感器安裝組件及采用的隔熱方法是有效的,具有實際應(yīng)用價值,為提高戰(zhàn)斗部沖擊波壓力測試結(jié)果可靠性提供了一種有效的方法。
[Abstract]:The explosive shock wave test technology is an important research content of warhead power evaluation, and is also an important basis for target damage evaluation. When evaluating warhead damage effect, shock wave pressure must be tested effectively. Based on the parasitic effect of explosion field on measuring the parasitic output of shock wave by piezoelectric pressure sensor, the suppression method of parasitic effect of shock wave pressure sensor is studied in this paper. On the basis of analyzing the mechanism of mechanical shock and vibration in explosion field, the vibration dynamic model of shock wave pressure sensor is established. Based on the effect of shock and vibration on shock wave pressure measurement in different environments, the installation assembly of ground reflection pressure sensor and wall reflection pressure measurement sensor are designed, respectively. Through theoretical modeling and numerical simulation, the suppression effect of the assembly is analyzed. By using ANSYS Workbench platform simulation, the restraining effect of installation components under impact load and vibration load is discussed, the type selection of vibration isolation material is completed, the simulation experiment of force hammer beating is carried out, and the performance of mechanical shock suppression of installation components is analyzed. Based on the analysis of the mechanism of thermal shock in the explosion field, a method of coating silicon grease on the sensitive surface of the sensor is proposed. The thickness of the thermal insulation layer with the best inhibition effect is determined by theoretical calculation and thermodynamic simulation. Through hot water impact simulation experiment, the inhibition performance of applying silicone grease was analyzed. Finally, based on the parasitic effect suppression measures adopted, the shock wave pressure test of explosion field is carried out, and the rationality of the suppression measures is discussed through the data processing and analysis of the measured signals. The experimental results show that the sensor assembly designed in this paper, which can suppress shock and vibration, and the heat insulation method used in this paper are effective and have practical application value. It provides an effective method to improve the reliability of shock wave pressure test results of warhead.
【學(xué)位授予單位】:南京理工大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2017
【分類號】:TP212

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