Dynamic behavior and buckling analysis of thin rectangular plate rotating around its symmetrical axis 軸對(duì)稱勻速轉(zhuǎn)動(dòng)狀態(tài)下矩形薄板的動(dòng)態(tài)特性與屈曲分析
( 5 ) a fingerprint classification method based on singular points and central symmetrical axis is presented and realized ( 5 )給出并實(shí)現(xiàn)了基于奇異點(diǎn)和指紋中心對(duì)稱軸的指紋分類方法。
If sufficient singular points can be extracted from fingerprint image , then classify fingerprint mainly based on singular points . otherwise classify fingerprint based on central symmetrical axis 如果能提取出足夠的奇異點(diǎn),則主要根據(jù)奇異點(diǎn)進(jìn)行分類,否則利用指紋中心對(duì)稱軸進(jìn)行分類。
Simplified theories are also presented for curved beams with commonly used sections , such as i - shape , channel and h section without any symmetrical axis . linear analysis is also performed in combination with finite element method 其后就常見的截面形式(單軸對(duì)稱工字形、槽形和無(wú)對(duì)稱軸的形截面) ,對(duì)所提出的曲梁理論進(jìn)行簡(jiǎn)化,并結(jié)合有限元方法求解曲梁的線性問題。
They can be found in circular cast houses of blast furnace , in oil - sealed dry gasholders and in workshops with curved cranes . cross sections of these curved members are of various types , such as il - shaped , i - shaped , channel , box and h section without any symmetrical axis 曲線梁在工業(yè)和民用建筑中也常有應(yīng)用,在高爐環(huán)形出鐵場(chǎng)、干式煤氣柜內(nèi)部結(jié)構(gòu)以及某些有工藝要求的廠房?jī)?nèi),常需采用不同截面形式的環(huán)形曲梁。