基于光纖光柵傳感的火炮關重件應變測試研究
發(fā)布時間:2018-05-30 23:02
本文選題:火炮 + 應變; 參考:《南京大學》2016年碩士論文
【摘要】:對火炮關鍵部件與重要部件(簡稱關重件)的動態(tài)應變過程研究是提高火炮性能的重要方法之一,準確的測試出火炮發(fā)射關重件瞬時應變大小,可以為火炮武器系統(tǒng)的結構強度與剛度設計和疲勞損傷分析提供重要參考依據(jù)。傳統(tǒng)的有限元分析法由于對火炮實際結構進行了部分簡化,很難對整個裝配體系進行分析,而且這種計算結果常常因為無法提供測試結果對比而缺乏說服力,而基于電阻應變片的測試方法很容易受到溫度、濕度等環(huán)境因素的影響,并且電阻應變片和電橋電路很容易受到電磁干擾影響,該測試方法只適合于一般環(huán)境的測量,在惡劣、復雜環(huán)境的測量難以獲得準確的結果。本文通過研究基于光纖光柵傳感的應變測試方法,首次提出利用光纖光柵傳感技術進行火炮關重件應變測試;诠饫w光柵傳感設計并開展萬能實驗機拉伸實驗、等強度懸臂梁實驗和應變與溫度的分離測量實驗,通過對比基于電阻應變片、基于數(shù)字圖像和基于光纖傳感的三種應變測試方法的實驗結果,驗證了光纖傳感技術在應變測量領域的可行性與準確性。在此基礎上開展霍普金森壓桿超高速應變測試和開展某火炮樣機實彈射擊關重件動態(tài)應變測試,完成了不確定度評定,驗證了光纖光柵應變測試數(shù)據(jù)的準確性與測試方法的優(yōu)越性。本文首次在國內利用基于光纖光柵傳感的應變測試方法開展火炮關重件動態(tài)應變測試,不僅為火炮武器系統(tǒng)的結構強度與剛度設計和疲勞損傷分析提供重要參考依據(jù),同時突破了傳統(tǒng)應變片測試方法的抗干擾難題,為電磁炮等具有較強電磁干擾源的武器裝備關重件應變測試提供了創(chuàng)新方法,豐富了火炮應變測試的技術手段。
[Abstract]:The study on the dynamic strain process of the key components and important parts of the artillery is one of the most important methods to improve the performance of the artillery. The accurate measurement of the instantaneous strain size of the gun launches the closed parts can provide an important reference for the structural strength and stiffness design and fatigue damage analysis of the artillery weapon system. It is difficult to analyze the whole assembly system because of the partial simplification of the actual structure of the artillery, and the results are often lack of persuasion because of the inability to provide test results. And the resistance strain gauge based testing method is easily affected by temperature, humidity and other environmental factors, and the resistance strain gauge. The electric bridge circuit is easily affected by electromagnetic interference. The test method is only suitable for the general environment measurement, and it is difficult to obtain accurate results in the harsh and complex environment measurement. In this paper, the strain test of the artillery heavy parts is first proposed by fiber Bragg grating sensing technology by studying the strain testing method based on Fiber Bragg grating sensing. Based on the fiber Bragg grating sensing design, the tensile experiment of the universal experimental machine, the experiment of the equal strength cantilever beam experiment and the separation of strain and temperature are carried out. By comparing the experimental results based on the resistance strain gauge, digital image and fiber sensing based three strain testing methods, the fiber sensing technology is verified in the field of strain measurement. On the basis of the feasibility and accuracy, the Hopkinson compression rod ultra high speed strain test and the dynamic strain test of a gun prototype real bullet are carried out, the uncertainty evaluation is completed, and the accuracy of the fiber grating strain test data and the superiority of the test method are verified. The first time in this paper is based on Fiber Bragg grating in China. The dynamic strain test of the artillery heavy parts is carried out by the sensor strain testing method. It not only provides important reference for the structural strength and stiffness design and fatigue damage analysis of the artillery weapon system, but also breaks through the anti interference problem of the traditional strain gauge test method, and is a heavy part with strong electromagnetic interference source, such as electromagnetic cannon. Strain testing provides an innovative way to enrich the technical means of gun strain testing.
【學位授予單位】:南京大學
【學位級別】:碩士
【學位授予年份】:2016
【分類號】:TJ306;TP212
【參考文獻】
相關期刊論文 前10條
1 楊玉良;秦俊奇;狄長春;孫也尊;馬亮星;;實彈射擊與炮口沖擊條件下炮架動態(tài)應力測試分析[J];火炮發(fā)射與控制學報;2015年03期
2 程世虎;徐國權;;光纖光柵傳感技術在露天礦邊坡監(jiān)測的應用[J];銅業(yè)工程;2015年04期
3 劉繼權;;光纖光柵在開關柜溫度監(jiān)測中的應用研究[J];電工技術;2013年04期
4 董娟娟;余成發(fā);汪萍;;專色油墨配色的顏色測量和不確定度評定[J];長春教育學院學報;2013年01期
5 柯志鵬;;電阻應變測量論述[J];科技風;2012年11期
6 李亞東;鄭堅;賈長治;唐平建;;基于隨機響應面法的扭力軸疲勞壽命仿真預測[J];系統(tǒng)仿真學報;2011年09期
7 唐正宗;梁晉;肖振中;郭成;;用于三維變形測量的數(shù)字圖像相關系統(tǒng)[J];光學精密工程;2010年10期
8 宮經寬;劉樾;;光纖傳感器及其應用技術[J];航空精密制造技術;2010年05期
9 王寶元;陳順德;周發(fā)明;衡剛;郭e,
本文編號:1957193
本文鏈接:http://www.lk138.cn/kejilunwen/zidonghuakongzhilunwen/1957193.html
最近更新
教材專著