本文選題：扁平繞帶式爆炸容器 + 數(shù)值模擬�。� 參考：《太原科技大學(xué)》2011年碩士論文

【摘要】：扁平繞帶式爆炸容器是一種新型結(jié)構(gòu)爆炸容器,它的主要結(jié)構(gòu)是薄內(nèi)筒和筒外以一定角度交錯(cuò)纏繞的鋼帶,這種離散化的結(jié)構(gòu)形式,使扁平繞帶式爆炸容器在材料加工、生產(chǎn)成本、生產(chǎn)效率等方面具有整體式爆炸容器無(wú)法比擬的優(yōu)勢(shì)。扁平繞帶式爆炸容器的鋼帶層存在間隙,這些間隙是天然的泄壓孔,在爆炸沖擊載荷下鋼帶層之間的摩擦和間隙的變化能夠產(chǎn)生良好的吸能效果,這作用也是整體式爆炸容器不具備的。 本文以扁平繞帶式爆炸容器的爆炸加載實(shí)驗(yàn)為依據(jù),建立了具有較高精度的扁平繞帶式爆炸容器有限元分析模型,分析了不同裝藥形狀下繞帶容器的動(dòng)力特性,探討了應(yīng)變率效應(yīng)、摩擦、軸向尺寸、繞帶和內(nèi)殼厚度比對(duì)繞帶容器抗爆特性的影響。研究結(jié)果表明,在爆炸沖擊載荷作用下繞帶容器爆心環(huán)面的變形以塑性變形為主,其軸向變形不明顯,繞帶容器的爆心環(huán)面和封頭頂心位置受到較強(qiáng)的沖擊,在殼體和封頭連接處存在應(yīng)力集中現(xiàn)象;裝藥形狀會(huì)對(duì)繞帶容器的動(dòng)力特性產(chǎn)生顯著的影響;強(qiáng)沖擊作用下扁平繞帶式爆炸容器會(huì)產(chǎn)生明顯的應(yīng)變率效應(yīng),這種作用會(huì)隨著沖擊作用的加強(qiáng)而加強(qiáng);摩擦作用對(duì)繞帶容器抗爆性能的提高效果是非常顯著的;適當(dāng)?shù)臏p小繞帶容器的軸向尺寸對(duì)繞帶容器的抗爆性能影響較小;通過(guò)選取合適的材料和調(diào)整繞帶和內(nèi)殼厚度比能夠使繞帶容器具有整體式爆炸容器的無(wú)法比擬的抗爆效果。
[Abstract]:The flat wound band explosive vessel is a new type of structure explosion container. Its main structure is the thin inner tube and the steel strip intertwined with a certain angle outside the tube. This discrete structure makes the flat wound explosive container be processed in the material. Production cost, production efficiency and other aspects of integrated explosion container incomparable advantages. There are gaps in the steel strip layer of the flat wound belt explosive vessel. These gaps are natural pressure relief holes. The friction between the steel belt layers and the change of the gap under the explosion impact load can produce good energy absorption effect. This effect is also not available in integral explosive containers. Based on the explosion loading experiment of the flat wound explosive vessel, a high precision finite element analysis model of the flat wound explosive vessel is established in this paper. The dynamic characteristics of the strip wound vessel with different charge shapes are analyzed. The effects of strain rate effect, friction, axial dimension, ratio of winding strip to inner shell thickness on the anti-explosion characteristics of the winding vessel are discussed. The results show that plastic deformation is the main deformation of the annular surface of the detonation center of the belt vessel under the action of explosion impact load, but its axial deformation is not obvious. The torus of the detonation center and the position of the sealing center of the belt vessel are strongly impacted. There is stress concentration at the junction of shell and head, the shape of charge has a significant effect on the dynamic characteristics of the wound vessel, and the strain rate effect of the flat wound belt explosive vessel is obvious under the strong impact. This effect will be strengthened with the strengthening of the impact action, the effect of friction on the anti-explosion performance of the winding vessel is very significant, and the appropriate reduction of the axial size of the winding vessel has little effect on the anti-explosion performance of the winding vessel. By selecting suitable materials and adjusting the ratio of winding and inner shell thickness, the winding vessel has the incomparable anti-explosion effect of integral explosive vessel.
【學(xué)位授予單位】：太原科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2011
【分類號(hào)】：TH49

【引證文獻(xiàn)】

相關(guān)碩士學(xué)位論文 前1條

1 孫賓;扁平繞帶式爆炸容器有限元分析[D];太原科技大學(xué);2012年

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本文編號(hào)：1801504