本文選題：減振復(fù)合板 + 損耗因子　； 參考：《華東理工大學(xué)》2013年碩士論文

【摘要】：減振復(fù)合板是由金屬板材與阻尼層復(fù)合而成,因此既具有金屬基材高強(qiáng)度的特性,又具有高分子聚合物特有的高阻尼性的特點(diǎn)。采用減振復(fù)合板進(jìn)行減振降噪,在現(xiàn)代機(jī)械設(shè)備和工程結(jié)構(gòu)中得到了越來越廣泛的應(yīng)用。因此,研究減振復(fù)合板的動(dòng)力學(xué)特性具有重要意義。 本文在對粘彈性材料的基本特性進(jìn)行分析的基礎(chǔ)上,對減振復(fù)合板開展了實(shí)驗(yàn)研究。根據(jù)國家標(biāo)準(zhǔn)GB/T16406-1996和美國材料與試驗(yàn)學(xué)會標(biāo)準(zhǔn)ASTME756-98中對粘彈性復(fù)合結(jié)構(gòu)的性能測試要求,自主開發(fā)了一套測試系統(tǒng)。分別采用自由梁法和懸臂梁法對減振復(fù)合板試樣進(jìn)行了動(dòng)力學(xué)性能分析,其測試結(jié)果具有較好的一致性。在此基礎(chǔ)上,對不同的厚度比、溫度及不同阻尼層材料成分對減振復(fù)合板動(dòng)力學(xué)性能的影響進(jìn)行了研究。測試結(jié)果對減振復(fù)合板減振性能的評價(jià)具有重要意義,為減振復(fù)合板的合理開發(fā)及運(yùn)用提供了依據(jù)。 運(yùn)用有限元法對減振復(fù)合板進(jìn)行了數(shù)值分析。根據(jù)減振復(fù)合板的特性參數(shù),采用參數(shù)化建模方法在ANSYS中建立與實(shí)驗(yàn)試樣相應(yīng)的有限元模型。應(yīng)用模態(tài)應(yīng)變能法分析了不同阻尼層厚度對復(fù)合板固有頻率及損耗因子的影響,并運(yùn)用ANSYS一階方法對減振復(fù)合板的厚度進(jìn)行優(yōu)化分析,得出了最佳目標(biāo)函數(shù),為減振復(fù)合板的合理設(shè)計(jì)提供一定的指導(dǎo)。
[Abstract]:The damping composite plate is composed of metal plate and damping layer, so it not only has the characteristics of high strength of metal substrate, but also has the characteristic of high damping characteristic of polymer.It is widely used in modern mechanical equipment and engineering structures to reduce vibration and noise by using damping composite plate.Therefore, it is of great significance to study the dynamic characteristics of the damping composite plate.Based on the analysis of the basic properties of viscoelastic materials, an experimental study on vibration absorption composite plates is carried out in this paper.According to the requirements of the national standard GB/T16406-1996 and the American Society of Materials and testing Standard ASTME756-98 for testing the properties of viscoelastic composite structures, a test system was developed.The dynamic properties of the composite plate were analyzed by the free beam method and the cantilever beam method, respectively, and the test results were in good agreement.On this basis, the effects of different thickness ratio, temperature and material composition of damping layer on the dynamic properties of damping composite plate were studied.The test results are of great significance to the evaluation of the vibration absorption performance of the damping composite plate and provide the basis for the rational development and application of the damping composite plate.The finite element method is used to analyze the vibration absorption composite plate.According to the characteristic parameters of the damping composite plate, the finite element model corresponding to the experimental sample is established in ANSYS by the parametric modeling method.The influence of different damping layer thickness on the natural frequency and loss factor of composite plate is analyzed by using modal strain energy method. The optimum objective function is obtained by using ANSYS first order method to optimize the thickness of damping composite plate.It provides some guidance for the reasonable design of damping composite plate.
【學(xué)位授予單位】：華東理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2013
【分類號】：TB535.1

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本文編號：1761300