本文選題：Winkler地基 + Euler-Bernoulli多層簡(jiǎn)支梁　； 參考：《北京交通大學(xué)》2014年碩士論文

【摘要】：摘要：當(dāng)今能源日漸缺乏,電能相當(dāng)寶貴,長(zhǎng)距離低壓電網(wǎng)的電力損耗驚人,尋找新能源已成國(guó)際熱點(diǎn)問(wèn)題之一。無(wú)線傳感器以其價(jià)格低廉、安裝方便、耐用的特點(diǎn),廣泛應(yīng)用于土木工程與軍事領(lǐng)域的監(jiān)測(cè)中,但其發(fā)展需求更持久的供能。作為傳統(tǒng)供能方式的電池,有著體積大、壽命短、環(huán)境污染嚴(yán)重等缺陷,同時(shí)還需定期更換,這對(duì)于遠(yuǎn)距離長(zhǎng)時(shí)間供能的無(wú)線傳感器來(lái)說(shuō)是不方便、不經(jīng)濟(jì)的,所以迫切需要一種新的供能方式。從環(huán)境中獲取能量為道路設(shè)備和無(wú)線傳感節(jié)點(diǎn)供電已是當(dāng)今能源研究的熱點(diǎn),環(huán)境中的可用能源很多：太陽(yáng)能、風(fēng)能、振動(dòng)或噪聲等,而利用壓電效應(yīng)俘獲環(huán)境中的機(jī)械振動(dòng)能是一較高效的俘能方式。本文利用壓電效應(yīng),俘獲由車(chē)輛運(yùn)動(dòng)產(chǎn)生的路面變形能,研究一種適用于道路的壓電俘能器,為公路沿線設(shè)備和無(wú)線傳感器提供能量。 本文將壓電俘能器埋置于路面中俘獲道路變形能,共分為四章：第一章給出課題背景和意義；第二章介紹研究理論與方法；第三章針對(duì)柔性俘能器,基于Euler-Bernoulli梁理論,忽略壓電材料剛度,將公路簡(jiǎn)化為Winkler地基上多層等截面簡(jiǎn)支梁,路面運(yùn)動(dòng)車(chē)輛分別簡(jiǎn)化為移動(dòng)集中荷載和移動(dòng)分布線荷載,采用振型疊加法理論計(jì)算出路面結(jié)構(gòu)的動(dòng)力響應(yīng),并應(yīng)用正壓電效應(yīng)獲得柔性壓電俘能器的電壓與功率輸出,并用ANSYS模擬驗(yàn)證對(duì)比分析；第四章將柔性壓電俘能器換為剛性壓電俘能器,結(jié)果表明理論模型中忽略俘能器剛度存在誤差,于是考慮壓電材料剛度對(duì)路面結(jié)構(gòu)剛度的影響,將公路簡(jiǎn)化為Winkler地基上多層變截面梁,基于多段梁理論和壓電理論,計(jì)算出路面結(jié)構(gòu)動(dòng)力響應(yīng)及俘能器俘能輸出,并用ANSYS模擬驗(yàn)證對(duì)比分析。 通過(guò)本文的理論探討,為將來(lái)的壓電俘能器選型及道路中壓電俘能器應(yīng)用提供了一定的借鑒。
[Abstract]:Absrtact: nowadays, the energy is scarce, the electric energy is very precious, and the power loss of the long distance low voltage power network is amazing. Finding new energy has become one of the hot issues in the world. Wireless sensor is widely used in civil engineering and military field monitoring because of its low price, convenient installation and durable characteristics, but its development needs more lasting energy supply. As a traditional power supply method, the battery has many disadvantages, such as large size, short life, serious environmental pollution and so on. At the same time, it needs to be replaced regularly, which is not convenient and economical for the wireless sensor with long energy supply at long distance. So there is an urgent need for a new way of supplying energy. Getting energy from the environment to power road equipment and wireless sensor nodes has become a hot topic of energy research today. There are many available energy sources in the environment: solar, wind, vibration or noise, etc. It is a more efficient way to capture the mechanical vibration energy in the environment by using the piezoelectric effect. In this paper, a piezoelectric energy capture device, which is suitable for the road, is studied by using the piezoelectric effect to capture the road deformation energy caused by the movement of the vehicle. It provides energy for the equipment and wireless sensor along the highway. In this paper, the piezoelectric energy capture device is buried in the road surface to capture the deformation energy of the road. It is divided into four chapters: the first chapter gives the background and significance of the topic; the second chapter introduces the research theory and methods; the third chapter, for the flexible energy capture device, based on the Euler-Bernoulli beam theory, Neglecting the stiffness of piezoelectric material, the highway is simplified as a simple beam with multi-layer and equal cross-section on Winkler foundation, and the moving vehicle is simplified as moving concentrated load and moving distributed linear load respectively. The dynamic response of pavement structure is calculated by using the mode superposition method. The voltage and power output of the flexible piezoelectric energy capture are obtained by using the positive piezoelectric effect, and the ANSYS simulation is used to verify the comparison and analysis. In chapter 4, the flexible piezoelectric energy capture is replaced by a rigid piezoelectric energy capture. The results show that there is no error in the stiffness of the energy capture device in the theoretical model. Therefore, considering the influence of piezoelectric material stiffness on the stiffness of pavement structure, the highway is simplified as a multi-layer variable section beam on Winkler foundation, based on the theory of multi-section beam and piezoelectric theory. The dynamic response of pavement structure and the output of energy capture are calculated and compared with ANSYS simulation. Through the theoretical discussion in this paper, it provides some reference for the selection of piezoelectric energy capture device in the future and the application of piezoelectric energy capture device in road.
【學(xué)位授予單位】：北京交通大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類(lèi)號(hào)】：U416.2;TM619

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 胡洪平;高發(fā)榮;薛歡;胡元太;;低頻螺旋狀壓電俘能器結(jié)構(gòu)性能分析[J];固體力學(xué)學(xué)報(bào);2007年01期

2 胡元太;蔣樹(shù)農(nóng);薛歡;;壓電俘能器結(jié)構(gòu)及其力/電耦合作用分析[J];固體力學(xué)學(xué)報(bào);2010年05期

3 闞君武;唐可洪;邵承會(huì);朱國(guó)仁;鄭曉培;;壓電液壓馬達(dá)的性能分析與測(cè)試[J];哈爾濱工程大學(xué)學(xué)報(bào);2010年08期

4 ;A low frequency piezoelectric power harvester using a spiral-shaped bimorph[J];Science in China(Series G:Physics,Mechanics & Astronomy);2006年06期

5 唐可洪;闞君武;任玉;王淑云;朱國(guó)仁;邵承會(huì);;壓電發(fā)電裝置的功率分析與試驗(yàn)[J];吉林大學(xué)學(xué)報(bào)(工學(xué)版);2009年06期

6 宋一凡;陳榕峰;;基于路面不平整度的車(chē)輛振動(dòng)響應(yīng)分析方法[J];交通運(yùn)輸工程學(xué)報(bào);2007年04期

7 翁大馨;簡(jiǎn)支彈簧地基梁及板計(jì)算[J];成都科技大學(xué)學(xué)報(bào);1994年06期

8 鄭小平,王尚文,陳百屏;彈性地基無(wú)限長(zhǎng)梁動(dòng)力問(wèn)題的一般解[J];應(yīng)用數(shù)學(xué)和力學(xué);1991年07期

9 孫春華;杜建紅;汪紅兵;尚廣慶;;路面振動(dòng)壓電俘能器的性能分析[J];壓電與聲光;2013年04期

10 蔣樹(shù)農(nóng);郭少華;李顯方;;單壓電片懸臂梁式壓電俘能器效能分析[J];振動(dòng)與沖擊;2012年19期

，

本文編號(hào)：1944491