苑士华
作者: Wang, Xue1;Zhou, Junjie1,2;Liao, Wenbo1;Yuan, Shihua1 (1Beijing Inst Technol, Sch Mech & Vehicles, Beijing 100081, Peoples R China.;2Beijing Inst Technol, Inst Frontier Technol, Beijing 250101, Peoples R China.)
出处: COATINGS 2024 Vol.14 No.7
关键词: TURBULENT-FLOW; ROUGHNESS; DNS
摘要: This study employs computational fluid dynamics (CFD) simulations to investigate the effect of wall roughness on linear loss in circular pipelines. It ...
发明人: 吴维,韦春辉,李铁,成乐,罗振琨,苑士华
申请人: 北京理工大学
申请号: 202410617379.4
申请日期: 2024.05.17
摘要: 本发明涉及轴承技术领域,特别是涉及一种对称双轴承负载无关损失测试试验台,包括透明油池,透明油池内设置有测试主体,测试主体连通有润滑系统,润滑系统与透明油池相连通,测试主体传动连接有驱动系统,驱动系统设置在透明油池外,透明油池远离驱动系统的一侧设置有相机,透明油池、测试主体、润滑系统电性连接有采集系统 ...
发明人: 吴维,韦春辉,成乐,李铁,罗振琨,苑士华
申请人: 北京理工大学
申请号: 202410560649.2
申请日期: 2024.05.08
摘要: 本发明涉及湿式离合器技术领域,公开了一种低带排转矩湿式离合器钢片,包括钢片本体,与摩擦片相对运动;若干凹凸结构,若干所述凹凸结构沿周向等间距设置在所述钢片本体上,所述凹凸结构包括外径凹凸部和内径凹凸部,所述外径凹凸部和所述内径凹凸部分别设置在所述钢片本体外径和内径上,且所述外径凹凸部和所述内径凹凸部 ...
发明人: 吴维,韦春辉,李铁,成乐,罗振琨,苑士华
申请人: 北京理工大学
申请号: 202410582787.0
申请日期: 2024.05.11
摘要: 本发明公开一种高传递效率湿式离合器钢片,涉及湿式离合器技术领域,钢片为环形体,其至少一个表面上均匀分布有若干顺时针通槽和逆时针通槽;各顺时针通槽均为连通钢片内周侧和外周侧的顺时针抛物线,顺时针通槽的一端设于内周侧形成内槽口,另一端设于外周侧形成外槽口;各逆时针通槽均为连通钢片内周侧和外周侧的逆时针抛 ...
作者: Wei, Chunhui1, 2; Wu, Wei1; Wang, Yunduo1; Nelias, Daniel2; Yuan, Shihua1 (1National Key Laboratory of Vehicular Transmission, Beijing Institute of Technology, Room 412, Building 9, Beijing; 100081, China;2INSA-Lyon, CNRS, UMR5259, LaMCoS, University Lyon, F-69621, France)
出处: International Journal of Heat and Mass Transfer 2024
作者: Li, Xiaolong1;Li, Wei1;Hu, Tianyi1;Yuan, Shihua1;Zhang, Yucheng1;Li, Cheng1;Cai, Liang1;Sakai, Tatsuo2;Imran Lashari, Muhammad1;Hamid, Usama1; (1School of Mechanical Engineering, Beijing Institute of Technology, Beijing, 100081, China;2College of Science and Engineering, Ritsumeikan University, Kusatsu, 5258577, Japan)
出处: Theoretical and Applied Fracture Mechanics 2023 Vol.123
摘要: Asymmetric load tests with stress ratio of 0.1 at 25 °C, 750 °C and 1000 °C were performed to investigate the high-cycle and very-high-cycle fatigue p ...
作者: Wei Li;Xiaolong Li;Chuanwen Sun;Rui Sun;Tianyi Hu;Shuowen Wang;Shihua Yuan;Wen Zhang;Muhammad Imran Lashari (1School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China;2Refractory Materials Research Central, Northwest Institute for Non-Ferrous Metal Research, Xi\'an, 710016, China)
出处: Materials Characterization 2023 Vol.201 P112960
关键词: Selective-laser-melted superalloy;Elevated temperature;Subsurface fatigue cracking;Microstructure characteristics;Dislocation structures
摘要: Subsurface fatigue cracking behavior related to microstructure characteristics at 650 °C of a selective-laser-melted as-deposited superalloy was exper ...
作者: Li, Xiaolong1;Li, Wei1;Hu, Tianyi1;Yuan, Shihua1;Zhang, Yucheng1;Li, Cheng1;Cai, Liang1;Sakai, Tatsuo2;Lashari, Muhammad Imran1;Hamid, Usama1; (1 Beijing Inst Technol, Sch Mech Engn, Beijing 100081, Peoples R China. ;2 Ritsumeikan Univ, Coll Sci & Engn, Kusatsu 5258577, Japan.)
出处: THEORETICAL AND APPLIED FRACTURE MECHANICS 2023 Vol.123
关键词: MINIMUM ENERGY FORMALISM; NICKEL-BASED SUPERALLOY; SLIP BAND MODEL; DEFORMATION MECHANISMS; BASE SUPERALLOY; TEMPERATURE; INITIATION; FAILURE; CREEP; SOLIDIFICATION
摘要: Asymmetric load tests with stress ratio of 0.1 at 25 degrees C, 750 degrees C and 1000 degrees C were performed to investigate the high-cycle and very ...
作者: 刘坤1;,吴维1;,杜长虹2;,卢国成2;,苑士华1; (1北京理工大学;2重庆长安汽车股份有限公司)
出处: 2023中国汽车工程学会年会暨展览会 国家自然科学基金(L1864210) 2023
会议录: 2023中国汽车工程学会年会论文集(2)
关键词: 电驱动系统;机电-刚柔耦合;逆变器开关;振动特性
摘要: 为分析逆变器功率元件开关对电驱动系统传动机构的影响,建立了驱动电机-两级斜齿轮-壳体机电和刚柔耦合的解析模型,将径向电磁力以外部激励的形式参与到系统动力学方程中。搭建了电驱动系统试验台验证了模型的准确性,分析了零件刚度和空间阶数对振动响应的影响。结果表明:1倍开关频率谐波组和2倍开关频率谐波组在轴承 ...
发明人: 吴维,段仪征,侯潇男,苑士华
申请人: 北京理工大学
申请号: 202311149361.8
申请日期: 2023.09.07
摘要: 本发明公开了基于二维插值反演的轴向柱塞泵配流副温度原位测试系统,包括:包括硬件子系统和软件子系统,硬件子系统与软件子系统通过串口进行通信;硬件子系统,用于采集传感器信号;软件子系统包括基础配置模块,用于设置基础参数,并利用基础参数将传感器信号传输至通道选择模块;通道选择模块,用于选择需要采集传感器信 ...