本文關(guān)鍵詞： 引信 磁流變液 延期解除保險機構(gòu) 延期解除保險時間 流場分析　出處：《南京理工大學(xué)》2011年碩士論文　論文類型：學(xué)位論文

【摘要】：磁流變液延期解除保險機構(gòu)將磁流變液應(yīng)用于引信延期解除保險機構(gòu)中,具有安全性高,解除保險可靠性高,延期解除保險時間可調(diào),結(jié)構(gòu)簡單等優(yōu)點。但目前對引信磁流變液延期解除保險機構(gòu)的研究還處在理論探索階段,且存在設(shè)計理論不完善,磁流變液材料易發(fā)生沉淀現(xiàn)象等問題。 采用理論分析、數(shù)值仿真和實驗驗證相結(jié)合的方法,對磁流變液在引信延期解除保險中的應(yīng)用進行了以下幾方面研究： 1.在先前研究的基礎(chǔ)上,通過理論分析與計算,設(shè)計并加工了引信磁流變液延期解除保險機構(gòu)樣機。 2.根據(jù)磁流變液流體動力學(xué)理論,建立了引信磁流變液延期解除保險機構(gòu)延期解除保險時問數(shù)學(xué)模型,得出了機構(gòu)的延期解除保險時間公式。同時運用Ansys軟件仿真分析了延期解除保險時間公式的正確性。仿真結(jié)果表明：該公式可以作為機構(gòu)設(shè)計時的參考公式。 3.針對磁流變液的沉淀性問題,結(jié)合引信使用環(huán)境對磁流變液的要求以及本機構(gòu)的特點,提出幾種提高磁流變液沉淀穩(wěn)定性的措施,并對商用磁流變液進行改進,配制出新的磁流變液,試驗結(jié)果表明配制的磁流變液很好地解決了沉淀穩(wěn)定性問題,適用于該引信磁流變液延期解除保險機構(gòu)。 4.設(shè)計并完成了機構(gòu)樣機的靜態(tài)試驗與動態(tài)試驗。靜態(tài)試驗研究機構(gòu)的安全性能與解除保險可靠性能。采用自制的試驗測試系統(tǒng),研究了彈丸轉(zhuǎn)速、泄流孔徑、磁流變液參數(shù)、溫度對機構(gòu)延期解除保險時間的影響規(guī)律,試驗結(jié)果表明影響規(guī)律與理論及仿真分析結(jié)果一致。按照蘭利法設(shè)計了動態(tài)試驗方案,完成了機構(gòu)動態(tài)試驗。試驗結(jié)果表明：在1959年式130毫米加農(nóng)榴彈炮發(fā)射環(huán)境下,機構(gòu)的延期解除保險距離大于100m,機構(gòu)的安全性、可靠性、延期解除保險距離符合設(shè)計要求。 最后,對本文研究工作進行了總結(jié),介紹了論文完成的主要工作和創(chuàng)新點,并對未來研究工作進行了展望。
[Abstract]:The magnetorheological fluid delay release insurance mechanism applies the magnetic rheological fluid to the fuze delay release insurance mechanism, which has the advantages of high safety, high reliablity and adjustable delay release time. However, the research on the delayed release mechanism of fuze magnetorheological fluid (MRF) is still in the stage of theoretical exploration, and the design theory is not perfect and the magneto-rheological fluid materials are prone to precipitate. With the combination of theoretical analysis, numerical simulation and experimental verification, the application of magnetorheological fluid in fuze deactivation is studied as follows:. 1. On the basis of the previous research, the prototype of the magnetorheological fluid (MRF) deactivation mechanism for fuze is designed and manufactured by theoretical analysis and calculation. 2. According to the theory of magnetorheological fluid hydrodynamics, the mathematical model of delay release of fuze magnetorheological fluid is established. At the same time, the correctness of the delay release time formula is analyzed by using Ansys software. The simulation results show that the formula can be used as the reference formula for mechanism design. 3. Aiming at the precipitation problem of magnetorheological fluid, combined with the requirement of fuze environment to MRF and the characteristics of the mechanism, several measures to improve the stability of MRF precipitation are put forward, and the commercial MRF is improved. A new magnetorheological fluid is prepared. The experimental results show that the prepared magnetorheological fluid solves the problem of precipitation stability well and is suitable for the fuze magnetorheological fluid delay release mechanism. 4. The static and dynamic tests of the prototype of the mechanism are designed and completed. The safety and reliability of the mechanism are studied by static test. The rotational speed of the projectile, the diameter of discharge and the parameters of the magnetorheological fluid are studied by using the self-made test system. The effect of temperature on the delay release time of the mechanism is studied. The experimental results show that the influence law is consistent with the theoretical and simulation results. The dynamic test scheme is designed according to Langley's method. The dynamic test of the mechanism has been completed. The test results show that under the environment of 130mm cannon-howitzer launched on 1959, the delay release distance of the mechanism is more than 100m, and the safety, reliability and the distance of the delayed release of the mechanism meet the design requirements. Finally, this paper summarizes the research work, introduces the main work and innovation of the paper, and prospects the future research work.
【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】：2011
【分類號】：TH112

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