A new equivalent plate modeling technique for composite wing structures is developed in the present work 因此,本文發(fā)展了一種新的復(fù)合材料翼面結(jié)構(gòu)等效板建模技術(shù)。
It is easily seen that problem ( 1 . 0 ) formally degenerates from a fourth order plate model toward a second order membrane problem when e decreases from 1 to zero 0 )從一個(gè)四階板模型逐漸退化為一個(gè)二階彈性膜問(wèn)題,因此如果某種有限元方法對(duì)( 1
New type of mr damper is designed and made based on the quasi - static model , so called parallel - plate model of mr dampers , which has the advantage of high dynamic range and stable performance 本文在mr阻尼器的準(zhǔn)靜態(tài)力學(xué)模型基礎(chǔ)上,設(shè)計(jì)制作了新型mr阻尼器,該阻尼器具有適用范圍廣,性能穩(wěn)定的特點(diǎn)。
This paper designs the icicle - iced plate model based on the ice - covered insulators and makes an investigation in artificial climate chamber by using corocam iv + and data acquisition card and so on 本文根據(jù)絕緣子覆冰后傘裙邊緣的冰凌特征設(shè)計(jì)了冰柱-冰板間隙模型,利用紫外線成像儀和數(shù)據(jù)采集卡等設(shè)備,在人工氣候室內(nèi)對(duì)該間隙模型進(jìn)行了試驗(yàn)研究。
According to actual performance of rigid and flexible surface layer , visco - elastic model and elastic plates model are adopted to respectively simulate flexible and rigid surface , and the foundation is considered as transversal isotropic elastic body 基于面層的實(shí)際特征,分別采用粘彈性模型和彈性薄板模型模擬剛性和柔性面層,地基則采用了本文所探討的地基模型。
First , the repeated structural analyses for static and dynamic characteristics are needed in the integrated optimization of composite wing structures . in this situation , the finite element model ( fem ) is time - consuming , while the continuum equivalent plate model ( epm ) is more efficient and often used 首先,復(fù)合材料翼面結(jié)構(gòu)綜合優(yōu)化設(shè)計(jì)需要反復(fù)進(jìn)行結(jié)構(gòu)靜力和動(dòng)力特性分析,如果采用有限元模型( finiteelementmodel ,簡(jiǎn)稱fem ) ,則其工作量太大。
In the thesis , sand packed glass plate model was applied to physical simulation of the macroscopic throats forming mechanism , studied effects of these factors as sedimental characteristics , petrophysical property , production process etc . on the forming of macroscopic throats 摘要?jiǎng)佑锰钌安AО迥P蛯?duì)疏松砂巖油層大孔道形成機(jī)理進(jìn)行物理模擬,探討了沉積特徵、油層物性、開(kāi)發(fā)過(guò)程等因素對(duì)大孔道形成的影響,歸納了大孔道形成的因素模型及大孔道形成過(guò)程中的產(chǎn)量壓力特徵。