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地震體驗(yàn)裝置液壓系統(tǒng)設(shè)計(jì)研究畢業(yè)設(shè)計(jì)-wenkub

2023-07-12 14:04:21 本頁面
 

【正文】 行業(yè)中發(fā)揮著極其重要的作用,成為702所的一項(xiàng)重要產(chǎn)品。本課題所研究設(shè)計(jì)的是整個(gè)地震體驗(yàn)裝置的液壓系統(tǒng)。考慮到液壓裝置有的這些優(yōu)點(diǎn),就目前地震模擬振動(dòng)臺(tái)大都采用液壓驅(qū)動(dòng)方式,所以還是比較有效率的。 地震體驗(yàn)裝置是利用裝置的運(yùn)動(dòng)對(duì)模擬地面上的運(yùn)動(dòng)的模擬,在這個(gè)過程中,進(jìn)行結(jié)構(gòu)或模型的動(dòng)力特性和動(dòng)力反應(yīng)的試驗(yàn)。 我們國(guó)家地大物博,所以在地震發(fā)生的比率相對(duì)較大,例如在喜馬拉雅一地中海地震帶和環(huán)太平洋地震帶上,地震活動(dòng)活躍,發(fā)生地震頻率較大。 我們?cè)趯?duì)地震原理研究過程中,一般需要到模擬試驗(yàn)臺(tái)上進(jìn)行驗(yàn)證和優(yōu)化的工作,地震體驗(yàn)裝置就為我們提供了很好的方法和手段?,F(xiàn)在利用地震模擬振動(dòng)臺(tái)對(duì)模型和理論進(jìn)行驗(yàn)證和優(yōu)化是公認(rèn)的最能模擬真實(shí)的地震發(fā)生環(huán)境的舉措之一。而過度開采過石油的地層像泄了氣的皮球一樣會(huì)萎縮、塌陷,板塊與板塊間的平衡性被破壞所產(chǎn)生相應(yīng)的條件反射,結(jié)果必然會(huì)導(dǎo)致頻繁地出現(xiàn)地震、地陷等自然災(zāi)害。 地震核變成因論:地震是地幔中核變的及時(shí)效應(yīng)在地殼上的表象。它就像龍卷風(fēng)、海嘯、冰凍等天然災(zāi)害一樣,是地球上經(jīng)常發(fā)生的一種自然災(zāi)害。超級(jí)地震指的是震波極其強(qiáng)烈的大地震。地球,可分為三層。希望大家能夠了解我的設(shè)計(jì)研究。為了考慮到體驗(yàn)者的安全,提振體驗(yàn)系統(tǒng)的水平加速度比真正的地震要小得多,這樣可以防止體驗(yàn)者摔倒。湖北理工學(xué)院 畢業(yè)設(shè)計(jì)(論文)地震體驗(yàn)裝置液壓系統(tǒng)設(shè)計(jì)研究摘要 地震體驗(yàn)系統(tǒng)是利用一套激振系統(tǒng)來模擬地震的裝置,憑借地震的波形()和頻率()以及其他的相關(guān)參數(shù),在一維方向上把地震的模擬效果進(jìn)行比較精確模擬,讓地震體驗(yàn)的人們體驗(yàn)地震發(fā)生時(shí)所獲得的感受和感應(yīng)。 地震體驗(yàn)系統(tǒng)也可以采用伺服螺旋機(jī)構(gòu)的電液伺服閥作為激振器核心, 利用電液伺服制器進(jìn)行全數(shù)字制, 振動(dòng)臺(tái)架結(jié)構(gòu)選擇非減震以及減震兩種體驗(yàn)?zāi)J?能夠?qū)崟r(shí)顯示采集的地震波形和頻率, 并依靠地震震感程度選取合適的地震參數(shù)。 關(guān)鍵詞:地震,電液伺服控制系統(tǒng),控制閥1RESEARCH ON DESIGN OF HYDRAULIC SYSTEM FOR THE EARTHQUAKEEXPERIENCED SYSTEMABSTRACT The seismic experience system is a set of excitation system to simulate seismic devices, by virtue of the earthquake waveform () and frequency () and other relevant parameters, accurate simulation of the direction of the onedimensional simulation of the effect of the earthquake, earthquake experiencepeople to experience the feelings of the earthquake. Secondly, the design of the antishake mode can also be used to verify the effect of different damping materials or structures for earthquake seismic. The earthquake experience systems allow people to experience magnitude earthquake experience to eliminate the fear of earthquakes, learn selfhelp earthquake. In order to take into account the experience of safety, boost the experience level acceleration is much smaller than the real earthquake, which prevents the experience of those who fall. Earthquake experience system also can be used the servo screw hydraulic servo valve as the exciter core, the use of electrohydraulic servo system for alldigital system, vibration rig structure to select nonshock absorption and cushioning two experiential model can be displayed in real timethe seismic waveform and frequency, and rely on the degree of earthquake was felt in selecting the appropriate seismic parameters. Earthquake experience can be a true representation of a vibration direction of seismic waves to create the atmosphere of a real earthquake experience. Finally, due to the bined effect of servo valve, the nonlinear effects and stand the test piece, the earthquake experience device is essentially a very plicated nonlinear system. For a better understanding of the principle of his work, using a series linearization method, my thesis in the sophisticated equipment makeup of the electrohydraulic servo shaking table and it works on the basis of the earthquake experience relevant a mathematical model to further adjust and optimize a series of visions and perspectives. I hope you can understand my design studies. KEY WORDS:Earthquake, Electrohydraulic servo control, Digital valve2目錄地震體驗(yàn)裝置液壓系統(tǒng)設(shè)計(jì)研究 1摘要 1ABSTRACT 2目錄 3符號(hào)說明 5第一章緒論 7 7 7 8 9 9 12 13 14第二章液壓系統(tǒng)功能原理設(shè)計(jì) 15 15 16 17 18 19 21第三章 液壓泵和電機(jī),液壓缸和閥的選取 22 22 22 24 24 26 27 29 29第四章總結(jié)與展望 30 30 30參考文獻(xiàn) 31致謝 32 符號(hào)說明名稱符號(hào)名稱符號(hào)滾動(dòng)摩擦系數(shù)機(jī)械效率加速度a工作壓力活塞桿外徑d流量q液壓固有頻率液壓缸的行程L材料的屈服點(diǎn)σS液壓缸壁厚δ缸筒徑向變形△D缸筒材料泊桑系數(shù)γ缸筒的爆裂壓力Pe焊縫拉應(yīng)力σ焊縫底徑D2焊接效率η閥芯臺(tái)階半徑r弓形重疊面積A0蓄能器容量V液壓泵的流量液壓橋流速增益流量增益閥芯位移小孔半徑閥芯質(zhì)量速度系數(shù)液壓缸總?cè)莘e阻尼比總泄露技術(shù)重力加速度g臺(tái)架及負(fù)載總質(zhì)量m油源壓力液壓缸內(nèi)經(jīng)D液壓缸有效工作面積A泄露系數(shù)K油壓的體積彈簧模量Eh材料的拉壓強(qiáng)度液壓缸外徑缸筒發(fā)生完全塑性變形壓力閥芯初始重疊面積的弓形高度缸筒耐壓實(shí)驗(yàn)壓力缸筒材料彈性模數(shù)E液壓缸底部厚度缸底材料許用應(yīng)力液壓缸輸出的最大推力閥芯重疊面積的弓形高度h螺旋槽升角β閥芯的轉(zhuǎn)動(dòng)角位移θ油液損失系數(shù)2D閥芯末端面積流量/壓力系數(shù)作用在活塞上的外負(fù)載力液壓伺服螺旋機(jī)構(gòu)的阻尼比活塞和負(fù)載的粘性阻尼系數(shù) 第一章緒論地震,又稱地動(dòng)、地振動(dòng),是地球上經(jīng)常發(fā)生的一種自然現(xiàn)象。中心層是地核,地核主要是由鐵元素組成;中間是地幔;外層是地殼??墒堑卣鸬陌l(fā)生率大概在10%~20%之間,其
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