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tolerance of a gamma titanium- aluminide alloy[J]. Procedia Engineering, 2011, 10: 3677-3682. [16] HARDING T S, JONES J W. Evaluation of a threshold-based model of the elevated-temperature fatigue......
. Thermoelectric nanostructures: from physical model systems towards nanograined composites[J]. Advanced Energy Materials, 2011, 1: 713-731. [16] LI Jing-feng, LIU Wei-shu, ZHAO Li-dong, ZHOU Min. High......
process parameters used in this study are given in Table 3. USPT was implemented on the as-welded specimens. The USPT device (model number: HJ III) invented by Tianjin University is composed of a high-power...). A Vickers microhardness tester (model: HVA-10A) was used to measure the hardness distribution in the peened zone along the depth direction. The applied load was 50 g, and it was applied for 10 s. 3......
material model approach and proposed that stable flow is ensured if following inequality satisfies (2......
扰链路2).实际上,由于认知用户接收通常并不对准卫星且GEO卫星轨道高度高达35 786 km,因此,卫星对认知用户信号接收的影响基本可以忽略;而卫星地面用户则有可能处在认知用户的有效通信范围内,因此为了避免认知用户信号发射会对授权用户接收的影响,认知用户需要感知授权用户信道占用状态. 图1 卫星认知通信网络模型 Fig. 1 Network model......
散. 2) 混凝土单拱波双曲拱桥.根据回弹法测试结果,混凝土等级取C35,据现场观察,主拱,腹拱,立柱,桥面板,拱波均为混凝土结构.对该桥主拱,腹拱,立柱,桥面板采用2节点空间梁单元进行离散,拱波采用板单元进行离散. 图4 单拱波双曲拱桥有限元模型 Fig. 4 FEM model of double arch bridge with single arch tile 3......
reaction kinetics model[J]. Journal of University of Science and Technology Beijing, 2006, 28(10): 912-916. [8] 刘欣伟, 冯雅丽, 李浩然, 蔡震雷, 杨志超. 镁离子浓度对氧化亚铁硫杆菌生长动力学的影响[J]. 中国有色金属学报, 2012, 22(8): 2353-2359......
数量和导波反射系数之间的关系,因此,对管道模型的边界条件进行简化.加载时,管道模型的内外都设为真空,对管道的非激发端面施加固定约束. 针对所建模型,采用ANSYS瞬态动力学模块中完全瞬态分析法进行超声导波检测数值模拟. 图2 管道模型示意图 Fig. 2 Schematic diagram of pipe model 2.2 导波激励与接收 在管道左端部激励纵......
, 韩九强, 何波, 等. 融合边缘特征的马尔可夫随机场模型及分割算法[J]. 西安交通大学学报, 2014, 48(2): 14-19. XU Shengjun, HAN Jiuqiang, HE Bo, et al. A region Markov random field model with integrated edge feature and image segmentation......
MapReduce模型的生物量遥感并行反演方法研究[J]. 干旱区资源与环境, 2013, 27(1): 130-136. FU Tianxin, LIU Zhengjun, YAN Haowen. Remote sensing retrieval method for biomass based on MapReduce parallel model[J]. Journal of Arid Land......