The dma results show that the resulting complex damping materials have no transition peak split , but possess broad and continuous damping functional area Dma測試結(jié)果表明,所制得的復(fù)合阻尼材料不分峰,具有寬而連續(xù)的阻尼功能區(qū)。
Dual principle is discussed while complex constitutive theory is used . the numerical solution stability of differential equations with complex damping is analyzed 討論了運用復(fù)阻尼理論時應(yīng)遵循的對偶原則,分析了含復(fù)阻尼系統(tǒng)運動方程數(shù)值解的穩(wěn)定性。
Besides , the paper further touched the research on the relationship of crystallization - melting , transitionrelaxati - on and compatibility with damping properties of polysiloxane / polyacrylate complex damping materials 對聚二甲基硅氧烷聚丙烯酸酯復(fù)合阻尼材料的結(jié)晶與熔融,轉(zhuǎn)變與松弛,以及相容性與阻尼性能關(guān)系進行了研究討論。
After damping dynamic model and controllable model for the composite structure are established according to the constitutive equation of magnetorheologcal - fluid , fluid mechanics and electromagnetism , the complex damping model is simplified utilizing magnetorheological behavior for structure design , and harmonization of semi - active structure and passive structure can be realized by using optimal design 針對其復(fù)合結(jié)構(gòu),根據(jù)磁流變流體的本構(gòu)方程、流體力學(xué)和電磁場理論建立阻尼特性模型和可控性能模型,并應(yīng)用磁流變特性將復(fù)雜的阻尼性能模型進行簡化以利于結(jié)構(gòu)設(shè)計,同時依據(jù)優(yōu)化設(shè)計方法實現(xiàn)了半主動和被動結(jié)構(gòu)的協(xié)調(diào)一致。
The main research works and conclusions of this thesis are listed as follows . the dynamic analysis model of elastic mechanism system with damping alloy parts is deduced based on the relationship between stress and strain of the material , also the analysis model under viscous damping model , complex damping model , nonlinear damping model and viscous - elastic damping model is put forward using the finite element method 本文的主要研究工作及結(jié)論如下:從材料應(yīng)力應(yīng)變本構(gòu)關(guān)系出發(fā),導(dǎo)出了滯變阻尼模型、復(fù)阻尼模型、非線性阻尼模型、粘彈性阻尼模型下的有限單元分析模型,進而給出了含阻尼合金構(gòu)件彈性連桿機構(gòu)系統(tǒng)動力學(xué)模型。