Dynamic behavior and buckling analysis of thin rectangular plate rotating around its symmetrical axis 軸對(duì)稱(chēng)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(chēng)軸的指紋分類(lèi)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(lèi),否則利用指紋中心對(duì)稱(chēng)軸進(jìn)行分類(lèi)。
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(jiàn)的截面形式(單軸對(duì)稱(chēng)工字形、槽形和無(wú)對(duì)稱(chēng)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(wèn)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。
The strength of convergent shock was enhanced in cylindrical and spherical geometries than in planar geometry . the bubble became more wide and big and the spike became more narrow and long . it showed in spherical implosion that the spike close to the symmetrical axis grew faster than the ring one away from the symmetrical axis 第四,利用lared一s程序模擬柱和球幾何內(nèi)爆過(guò)程中rt不穩(wěn)定性增長(zhǎng),表明收縮幾何效應(yīng)對(duì)內(nèi)爆過(guò)程中不穩(wěn)定性的增長(zhǎng)有重要影響,柱和球幾何中聚心沖擊波的強(qiáng)度大于平面情況,氣泡變得更加寬而大,而尖頂變得更加細(xì)而長(zhǎng)。
Based on the research of influenced parameters on constant and varying depth solid web box girder before , the shear lag aroused by the parameters including width - span ratio , outstanding flange on base slab and the position of the tendons are further studied . the investigation show that shear lag values diminish along with the decease of width - span ratio and the departure from the symmetrical axis of anchor position , but outstanding flange is contrary to the former 在前人對(duì)等截面、變截面實(shí)腹箱梁剪力滯效應(yīng)影響參數(shù)研究的基礎(chǔ)上,本文進(jìn)一步對(duì)腹板開(kāi)孔的連續(xù)箱梁的寬跨比、底板翼緣伸出以及預(yù)應(yīng)力錨固位置改變等參數(shù)對(duì)箱梁剪力滯的影響進(jìn)行研究。