The main contents include : 1 . the mechanics performances of geometrically similar slabs under static load on the same elastic foundation are similar, according to the analysis of slabs with similitude laws and tests of soil stress under rigid pavements with different size ratios . 2 主要內(nèi)容包括:1、根據(jù)靜力荷載下不同相似比的剛性路面板下的土壓力測(cè)試結(jié)果,結(jié)合應(yīng)用相似理論對(duì)彈性地基板所作的分析,指出同一場(chǎng)地土上幾何尺寸相似的彈性地基板在靜載下的力學(xué)性能相似。
The work presented in this thesis is part of the research project-similitude laws and nondestructive diagnosis on concrete pavements, which is supported by china national science foundation . 9 slabs were tested to failure with factors of slab thickness, size ratio of geometrically similar slabs and loading place taken into account 本課題在國(guó)家自然科學(xué)基金項(xiàng)目“混凝土路面板相似理論與損傷診斷研究”(批準(zhǔn)號(hào)59978015)資助下,進(jìn)行了不同厚度、不同幾何相似比的9塊剛性路面板的試驗(yàn)研究。
The physical and mathematical models are founded . numerical simulation of marangoni convection in the liquid bridge and gas channel was performed by employing the primitive variable method and using galerkin finite element method, which is applied for discretization of non-dimensional governing equations and boundary conditions . the relationship between the suppressing status of mc in the liquid bridge and the inlet gas velocity or the channel width is obtained, and the suppressing status of some kinds of marangoni numbers ( ma ) or size ratios of liquid bridge a is analyzed 采用原始變量法,用galerkin有限單元法對(duì)無(wú)量綱控制方程及邊界條件進(jìn)行離散后,數(shù)值模擬了微重力條件下半浮區(qū)硅熔體及氣體流道內(nèi)的marangoni對(duì)流,得出了無(wú)量綱氣流沖刷速度及流道寬度變化和熔體內(nèi)熱毛細(xì)對(duì)流抑制程度的關(guān)系,進(jìn)而分析了不同的無(wú)量綱參數(shù)ma數(shù)和不同熔體幾何尺寸比a下熱毛細(xì)對(duì)流抑制情況。