共搜索到2138条信息，每页显示10条信息，共214页。用时：0小时0分0秒548毫秒
; 文章编号:1672-7207(2016)10-3575-07 The design and research of anti-freezing solar flat plate collector with phase change energy storage layer ZHAO Jing1, WANG Zhiping1, 2, WANG... University of Technology, Lanzhou 730050, China) Abstract: A new anti-freezing solar flat plate collector was designed, which added the energy storage layer of phase change between heat absorbing plate......
真空平板玻璃封边残余应力的研究 缪宏1,王明友1,张瑞宏1,张剑锋1 (1.扬州大学机械工程学院,扬州,225009) 摘要:以实验室制样的真空平板玻璃为基础,用电测法对真空平板玻璃封边结构进行了残余应力场研究,成功测试出了封边残余应力场的分布.采用数值分析法对真空平板玻璃封边残余应力场进行了分析,采用有限元法分析已建立的数学模型,得出了其应力分布规律,并得出理论计算与试验结果基本一致的结果.探讨封边料的线膨胀系数对真空玻璃残余应力的影响,同时分析封边应力耦合对真空玻璃残余应力分布的影响,以残余应力作为评估真空玻璃失效的基本参量,揭示残余应力强度与弹性模量之间的关系,创立一种基于残余应力的真空平板玻璃失效计算新方法,为真空玻璃封边残余应力的许容值分析提供理论基础. 关键词:真空平板玻璃; 风荷载; 有限元分析; vacuum; flat glass; wind loading......
-water nanofluid flow over an expanding flat plate with non-uniform heat source DOGONCHI A S1, CHAMKHA Ali J2, 3, HASHEMI-TILEHNOEE M1,SEYYEDI S M1, RIZWAN-UL-HAQ4, GANJI D D5 1. Department of Mechanical...-heterogeneous reactions and thermal radiation on magneto- hydrodynamic Cu-water nanofluid flow over an expanding flat plate with non-uniform heat source [J]. Journal of Central South University, 2019, 26(5......
: The structures of flat blades were improved considering two ways of reducing the rake angle of the flat blade and adding horizontal plate, and the blades improved by the two ways were regarded... structure is replaced by simple ones in condition of different blades’ structures with similar blade-edge with only considering cutting resistance. Key words: flat blade; dead zone; blade-edge; soil......
线性4-node flat shell element with drilling degrees of freedom for nonlinear analysis of plates and shellsWEN Ying, DAI Gonglian, ZENG Qingyuan(School of Civil Engineering, Central South University... solution and/or numerical results obtained by other researchers and present predictions. Meanwhile, these examples demonstrate efficiency and robustness of the 4-node flat shell element for determining......
粒状贝氏体对10CrNiMoV球扁钢力学性能的影响陈雪慧1,杨才福1,张倩1,苏航1,张永权1(1.北京市钢铁研究总院结构材料研究所)摘 要:研究了粒状贝氏体对10CrNiMoV球扁钢力学性能的影响.结果表明,热轧或正火连续冷却过程中,形成了大量的粒状贝氏体,显著降低了钢的韧性.热轧直接回火后,粒状贝氏体得到一定程度的分解,改善了钢的低温韧性,-40℃冲击功可达46 J.经过正火加回火处理后,粒状贝氏体得到了充分的分解,低温韧性显著提高,-40℃冲击功达到144J.关键词:10CrNiMoV球扁钢......
by two infinite vertical flat plates in presence of magnetic field and thermal radiation using Galerkin method Peyman MAGHSOUDI1, Gholamreza SHAHRIARI2, Hamed RASAM2, Sadegh SADEGHI2 1. School... two infinite vertical flat plates in the presence of magnetic field and thermal radiation. Initially, a similarity transformation is used to convert momentum and energy conservation equations......
; tidal flat system; Late Permian; eastern Yunnan and western Guizhou; [全文内容正在添加中] ......
aggregates, five different-size flat and elongated (F&E) coarse aggregates were glued into two specimens by epoxy resin, respectively, and slice images were obtained by X-ray CT, then the aggregates... of the present manual measurement. Key words: coarse aggregate; flat and elongated (F&E) aggregate; X-ray CT; digital image processing; fuzzy c-means clustering; overlap area method; spherical harmonics 1......
......
