减震论文翻译

1、减震论文翻译作者:日期:介绍传统阻尼动力振动减振器简称DVA或调谐质量阻尼器简称TMD,其基本原理是在通过在主系 统上增加一个附加子结构，即吸振器，来这是一种在辅助弹簧质点系统之间添加了一个阻尼 减震器在质量m和主要质量M如图1所示。它的基本功能是在系统启动和停止时，降低共振 时，主要质量的振动振幅，达到减振的效果。这是rahm在1 911年发明的。同时在19 28 年，Ormondroyd和Den Hartog指出，DVA的阻尼有一个最佳值的最小化应用系统共振的 振幅响应。像这样的优化准则被称为匕优化。Den Hartog的不动点理论是常用来确定最 优调谐的频率和阻尼比的DVA附加到应用振动

2、系统 为了增加DVA的应用，Cra ndal 1 a nd Mark提出的另一个优化原则当随机激励作用到主系统时，安装了吸振器主系统整个频响 曲线下的面积最小，即输入主系统的能量最小，被称为H2动力减振器的优化。当振动系统受到随机激励，比如风荷载代替谐波激励时，H2动力减振器的优化比H”优化效果更好。Th e exac t so 1u ti on of the H2 o ptim i zati on fo r the t r ad i t i o na l DVA attach e d to an und am ped p r ima r y system was der iv e d by

3、W a r b urton 5 and Asami e t al. 6.H2的精确解的优化传统DVA附加到一个主系统无阻尼被W arburton派生5 和A s ami et al。6。oA s am i also derive d wi t h o ther r ese archers 7 the analytica 1 soluti onsto HN and H 2 optimiz a tion p roblems of t he trad i tio n a 1 DVA atta c he d to da mpe d s d of systems.oAsami还与其他研究人员7导出的分析

4、s olutionst o HN和H2优化问题传统DVA附加阻 尼应用系统。oCheung and Wong 8 derived t he HN a nd H2 optimum p aramete r s of the t r adi ti on a l DVA f o r suppre ss ing vibra t i o n s i n pl at e s .张黄和8导出环和H2最优参数的传统DVA抑制振动的盘子。oTh e re are s e ve r al no n-t r aditional co nfigu r a t ions of dynam i c vibr a ti on

5、 absor b e r s rep o rte d t o have b e 11 er vibration suppr e ssion per f orma nce th an the traditional d e sign o f DVA. o有一些非传统的配置的动态振动吸收报道有更好的振动抑制DVA的性能比传统的设计。Some e x amples of non-tra d it io nal DVA are s e ries T MD 9, p a r a lle 1 m u 11 ip l e TMD s 1 0, mu 1 tideg r ee-o f -fr ee dom T

6、MDs 11 and t h r ee- o r four-e 1 em e nt TMDs 12.一些非传统的例子DVA系列TMD 9,并行多个TMDs10,多自由度TMDs11和城三种T MDs1 2。A variant de sign o f the damp ed dynamic vibration absorber as sh own in. Fig. 1 b was prop ose d b y Ren 13, and Liu and Liu 14 r ecen t ly.o阻尼动力减振器的设计一个变佑如图1所示b是由任正非提出13,和刘翔，刘翔最近1 4。B a sed on t

7、he fixed po i nts the ory, the HN optimum tuning paramete r s of such a v i bra t i o n ab s orber ha s be e n derive d ana 1 yt i ca 1 l y fo r su p p ressing the re son a n t vibrati on of a sdo f system subjec ted t o fo r ce e xc i tat i o n 15 or ca us e d by g roun d mo tions 1 6 .基于不动点理论，HN最佳

8、调优参数的减震器派生分析了抑制共振振动的应用受到力激发 15或引起的地面运动16。oIt has b een p r oved t h at t he HN opt i m i zed non t r a d iti o n al a b s or b e r c an resul t i n a larger reduc ti on of the r esonant v ibrat i o n amplitud e o f the pri mar y m a s s than t h e t rad i t i ona 1 dam ped dyn a m i c a b s o rbe r.

9、已经证明,HN优化非传统吸收减少会导致更大的主共振振幅的质量比传统阻尼减震器。In t his article, the H2 o p tim u m tuni ng frequ e n c y and d a mp i ng o f a d a mped dynamic vibrat i on a b sorber o f n on -t r adit i ona 1 f orm a s show n i n Fig.1b have been derived f or mini mizing the mean square moti o n o f a s ingle- d e gree-o

10、f-free d om syste m under r ando m f orc e excitation.o在这篇文章中,H2最优调谐频率和阻尼的阻尼动力减振器的非传统形式所示Fig.1b派生了 最小化均方随机力激励下的单自由度系统的运动。oTo the authors k n ow 1 edg e, there i s no re s e arch report foun d i n litera t ure on this t opi c .作者的知识，没有关于这一主题的研究报告发现在文学。oIt is sh own t h at the pro pos e d ab s or b er

11、 can always pro vide a l a rg e r suppre s s i on o f the me a n s q u a re m o tion of t h e primary s tr uc ture under rand om f orc e excit ation than th e t raditiona 1 absorb e r if it s pa rame ters are o ptim i zed acc ordi n g to th e pro ced u re as d e scri be d i n Sec t ion 3 of thi s a

12、r t i c1 e.结果表明该吸收器可以提供一个更大的抑制均方运动随机力激励下的主结构比传统吸收器 如果根据过程参数优化本文的第三节所述。oThese local mini mum and max imum of tuning ratios would not exist i f.oThe d i men si on 1 ess mean square motion (.) contours of the prim ary mass M of Mode 1 B i s cal c ulate d according to Eq. (8) with ma s s ratio u=0.1 and

13、 the r e sul ts are pl o tted i n Fig. 3.o无因次平均平方运动()轮廓模型的主要质量M B的计算根据情商。(8)与质量比u = 0.1 和结果绘制在图3。No g 1 ob a l minim u m o f mean sq u ar e moti on exi s ts and the local m i nimum and ma xi mum point s o f t he mean sq u are motion o f mass M are m a rke d i n Fig.3 for i 1 lustra ti on. Eq.(10)is

14、also plot ted i n Fig.3 to s how the optimum damp ing ratio (.) for any chosen freq u ency rati o (.) of the v a rian t DVA leading t o the min imummea ns qu a remo tiono f the mass M o f M o del B. 11 canb e seeni n Fig.3tha t thevariationof th e mean square mot i on is relatively small at any po i

15、 n t on the d otte d line i n F i g. 3 and it means small va r ia t ion of frequen cy ratio o r d ampin g ra t io of t he DVAwou 1d not c a u se ab ig chang e ofthemean s quare motion oftheprimary mass M inMode1 B. Onthe other ha n d,the v a ri ati on of th e mean square m o tion i s relat i vel y h

16、i gh er at t he minimum po i nt in Fi g 2 for th e ca s e o f Mod e1 A. The mean square mo tion con tours of the primary mass M o f Mode 1 B i s c alculate d acco r di ng to Eq. (8) with mass ratio u=0. 2 a nd t he r esult s a re plotted in Fig. 4 for i llust r at i on. o不存在全球最小均方运动和局部最小值和最大值点的平均平方运

17、动质量M标记在图3 i 1 lust ra tion. Eq。(10)也在图3展示策划的最优阻尼比()对任何选择的频率比率()变 体DVA导致最小均方运动模型的质量M B .它可以看到在图3的变化均方运动是相对较 小的在任何时候在图3中的虚线，这意味着小DVA的频率比和阻尼比的变化不会引起大的变 化的平均平方运动模型的主要质量M B .另一方面,均方运动是相对较高的变异在最小点在图 2中模型的均方运动轮廓模型的主要质量M B的计算根据情商。(8)与质量比u = 0.2和图 4中的结果绘制插图。B. As predicted i n t he t heor etic a l a n a lys

18、i s b e for e , no lo ca l mini m u m or maxim um of the m e an s q uare m o tion e xi st s and the mea n square moti on of t he prima r y mass M decrea se s as frequ e ncy r a ti o or d am p in g ratio increa s e s .oEq。(10)也绘制在图4显示最优阻尼比()对任何选择的频率比率()变体DVA导致的最 小均方运动质量M模型b .预测的理论分析,没有当地最低或最高的均方运动存在和

19、均方运动 的主要质量降低频率比和阻尼比增加。oIn p r a ctic e, an as-hi g h- a spos si bl e frequency ra t i o of the DVA s ho ul d be cho s en and th e corres p ond ing dam ping ratio o f the DVA is s hown by t h e dotted line in Figs. 3 and 4 fo r u = 0 .1 and 0.2, respectively, 1 e ad ing to t he min i mum me an square

20、 moti o n of th e prim a ry mass M. espec t ivel y. oThe mass ratio o f the DVA in prac t ice i s about 10- 30%.A s shown i n Fig. 5 the pro posed DVA ca n provid e 35% o r more r eduction of means quare motion of the primary mass M i f the freque n cy ratioischo s enfort he p r oposed DVA. oIn Fig.

21、 6, it showsthat 60%o r more r ed ucti o n of mean s quarem oti on of the pr imar ymass M ifthe frequency ra t i o 3 i s ch osen.I n gen e ral, ifisch os ent obe l ar ger th an one and th e dampin grat i o and mass r at io u a r e kept co n stant,E q . (8) s h ows t ha t the me a n sq u a r e mo t i

22、on of the m a ss M of model B decreas e s as in c r e ases.It i s t h erefore a n as-h ig has-po s si bl e v alue of (.) is re c ommen d ed to be cho se n s u ch th a t a practica l minimum of mean sq u a re m otio n (.)o f the mass M of model B can be a c hieved.o因此as-h igh-a s -possible值()的建议选择这样一

23、个实际的最小均方运动()质量M的模 型可以实现。C on c l u siono结论oT he H 2 op t imum parame t ers of a non-traditional DVA attached to a s do f primary system is derived for minimizin g the m e an square motion of a sdof sy s tem unde r r a ndom f o rce exc i t at io n .o非传统DVA的H2最优参数附加到一个主系统应用推导最小化均方应用系统在随机力激励下 的运动。It ha

24、s been shown that t he perform an c e of the variant DVA ca n be b e tter than t he ordinary one if t he frequency and damping rat i os o f the DVA a re c ho s en properly.已经表明，变异DVA的性能可以比普通如果DVA的频率和阻尼比是正确选择。oTo the author s knowledge, there is no r esea r ch r ep or t found in li t e r ature on t h

25、is to p i c .o作者的知识，没有关于这一主题的研究报告发现在文学。No g loba l o ptimum tu ni ng c on d i ti o n exists i n the propo s e d absor b e r and it is recommen d e d t ha t a h i gh tu ni n g f r e qu e ncy ra t i o be u s ed i f pos si b le .不存在全球最佳优化条件提出了吸收器和建议高调谐频率比如果可能的话。Th e bes t va l u e of damping rat i o a

26、f ter selecting t h e tu n ing fre q uency rat i o i s der i v e d and s tated in Eq. (10). o阻尼比的最佳值后选择调谐频率比派生和Eq。( 10)。The opt i mall y tu n ed va r iant DVA a dds both d amp ing and s tif f nes s to the pr imary structure in compa r iso n with the traditiona l DVA and the refor e the mi t ig a tio

27、n of structu r al vibration su bj ecte d to external for c e i s m o re signi f i ca nt for this varian t d yna mic vib r ation absor ber.经过调优的变体DVA增加阻尼和刚度的主要结构与传统DVA相比因此结构振动受到外力的 缓解是更重要的变体动力减振器。oThe comparison revealed th at mode 1 B p r o vid e s a 60 more p er c ent o f red u ction of mea n squ are motion o f t he prima r y mass M t han th e o pt i mized mod e l A if the f r eq u enc y ra t io o f the mo d el B is c h o sen t