本文選題：平板氧傳感器 + 溫度場(chǎng)��； 參考：《儀表技術(shù)與傳感器》2016年07期

【摘要】：設(shè)計(jì)了利用鈰基儲(chǔ)氧材料作為固態(tài)儲(chǔ)氧參比層的新型平板式濃差型汽車氧傳感器的多層結(jié)構(gòu),采用APDL建立其參數(shù)化有限元模型,通過熱傳導(dǎo)分析,對(duì)加熱器進(jìn)行優(yōu)化設(shè)計(jì)。對(duì)優(yōu)化模型施加階躍電壓,通過對(duì)電熱耦合場(chǎng)模擬顯示:t=4 s時(shí),傳感器活性區(qū)域溫度均達(dá)到工作溫度(300℃)以上,t=63 s時(shí),各層溫度趨于穩(wěn)定,其中t=5 s時(shí),各層溫度梯度最大。熱力耦合結(jié)果顯示:各層最大等效應(yīng)力先增大再縮小,最后趨于穩(wěn)定,在t=5 s時(shí),各層熱應(yīng)力值最大,但均小于相應(yīng)溫度下的斷裂強(qiáng)度。
[Abstract]:The multilayer structure of a new type of plate oxygen sensor for automobile using cerium based oxygen storage material as the solid oxygen storage reference layer is designed. The parameterized finite element model of the sensor is established by APDL, and the heater is optimized by heat conduction analysis. By applying the step voltage to the optimized model, the electrothermal coupling field simulation shows that when the temperature of the active region of the sensor reaches above 300 鈩，

本文編號(hào)：2021876