北京理工大学机械与车辆学院是国内知名的机械类专业学院,综合实力处于国内同类高校前列,部分研究方向达到国际先进水平,建院以来为我国国民经济和国防工业培养了大批杰出人才。学院下设车辆工程系、热能与动力工程系、制造工程系、交通工程系、机电科学基础部、工程训练中心、学科基础实验中心、学院办公室等单位。学院现... [详细]
作者: 符丽,杨策,胡晨星,耿开贺 (北京理工大学机械与车辆学院)
出处: 工程热物理学报 2022 第43卷 第3期 P669-678
关键词: 离心压气机;失速预测;流动稳定性;模态分解
摘要: 本文以带有蜗壳的离心压气机为研究对象,首先采用压缩动态模态分解方法对叶轮失速扰动结构进行提取和分析;其次,基于线性稳定性理论,建立叶轮入口z–θ圆柱面的二维稳定性分析方法,对失速诱发的流动失稳扰动传播进行研究。结果表明,由叶片前缘溢流引起的失速扰动可以分解为四种形式:基本流场扰动、叶频和转频引起的扰 ...
作者: 田北晨,刘涛涛,吴钦,黄彪 (北京理工大学机械与车辆学院)
出处: 兵工学报 2022 第43卷 第3期 P586-598
关键词: 跨介质飞行器;滑跳;砰击载荷;运动特性
摘要: 受生活中水漂现象的启发,跨介质飞行器广泛采用灵活机动的滑跳运动模式,大大提高了海战武器的突防能力。基于数值模拟方法研究具有复杂构型的跨介质飞行器触水滑跳运动特性,重点分析入水参数对跨介质飞行器静水面的近水面滑跳运动过程影响。研究结果表明:针对所提跨介质飞行器,近水面滑跳运动可分为稳定滑跳阶段及水面滑 ...
作者: Yong Wang1;Xiaolin Wang1;Jie Chen2;Gangxiang Li1;Houlin Liu1;Wei Xiong1; (1Research Center of Fluid Machinery Engineering and Technology, Jiangsu University, Zhenjiang 212013, China;2School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China)
出处: Engineering Failure Analysis 2022 Vol.138 P106303
关键词: Centrifugal pump;Solid-liquid two-phase flow;Sand particles mixing;Dynamic characteristic;Wear
摘要: The river water has a high sand content and the characteristics of mixed distribution of sand particles with different diameters. The effect of sand p ...
作者: Junda Ma;Guoxin Wang;Jinzhi Lu;Shaofan Zhu;Jingjing Chen;Yan Yan (School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China EPFL SCI-STI-DK, Station 9, CH 1015 Lausanne, Switzerland COMAC BATRI, Beijing 102211, China School of Economics, Fudan University, Shanghai 200433, China School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China)
出处: Applied Sciences 2022 Vol.12 No.3067 P3067
关键词: MBSE;cost analysis;static analysis;dynamic analysis development process;KARMA language
摘要: With the increasing complexity of aircraft development programs, the development processes of aircraft and their subsystems are continuously becoming ...
作者: Hao GONG,Jianhua LIU,Huihua FENG (School of Mechanical Engineering,Beijing Institute of Technology)
出处: Chinese Journal of Aeronautics 2022 第35卷 第2期 P47-61
关键词: Anti-loosening;designs;Anti-loosening;structures;Bolted;joints;Loosening;failure;Preload;test
摘要: Threaded fasteners naturally tend to loosen under vibration,impact,or alternating thermal load.Various anti-loosening methods or strategies are widely ...
作者: Du Yimin;Shi Lingling;Zhai Xiang;Gong Hanqing;Zhang Zhijing (School of Mechanical Engineering, Beijing Institute of Technology School of Mechanical Engineering, Beijing Institute of Technology Beijing Institute of Electronic System Engineering School of Mechanical Engineering, Beijing Institute of Technology School of Mechanical Engineering, Beijing Institute of Technology)
出处: MATEC Web of Conferences 2022 Vol.355 P02029
关键词: ontology construction;knowledge extract;assembly case ontology
摘要: The actual product assembly process mainly relies on manual assembly by workers, and the personal experience of workers is difficult to effectively re ...
作者: Yan Kangjie;Huang Weiqing;Zuo Zhengxing;Liu Jinxiang;Ren Peirong;Hu Dingyun;Zhao Chengzhang (School of Mechanical Engineering, Beijing Institute of Technology School of Mechanical Engineering, Beijing Institute of Technology School of Mechanical Engineering, Beijing Institute of Technology School of Mechanical Engineering, Beijing Institute of Technology School of Mechanical Engineering, Beijing Institute of Technology China North Engine Research Institute(Tianjin) School of Mechanical Engineering, Beijing Institute of Technology)
出处: MATEC Web of Conferences 2022 Vol.355 P01003
摘要: In view of the non-uniform distribution of mechanical properties of cast aluminum alloy cylinder head, the mechanical properties evaluation and micros ...
作者: 刘春辉,任宏斌 (安徽科技学院机械工程学院;北京理工大学机械与车辆学院)
出处: 储能科学与技术 2022 第11卷 第2期 P667-672
关键词: 动力电池;荷电状态;电池管理系统;主动均衡
摘要: 动力电池单体容量不一致会导致动力电池组在充放电过程中失去平衡,影响动力电池组的使用效果,降低动力电池组的使用寿命。为了解决这一难题,本工作设计了一种基于荷电状态(SOC)值的主动均衡电池管理系统。该电池管理系统利用安时积分法估计动力电池组中各电池单体的SOC值,在此基础上计算动力电池组的SOC平均值 ...
作者: 郝文美,张立伟,蔡娇,杨瑞,修三木 (北京理工大学机械与车辆学院;北京交通大学电气工程学院;交通部水运科学研究院)
出处: 电工技术学报 2022 第8期
关键词: 感应电能传输;线圈设计优化;输出功率;效率
摘要: 无网受流列车作为一种新型城市轨道交通车辆,摆脱了传统的架空接触网,借助耦合线圈进行电能传输,耦合线圈作为重要的传输媒介,其配置与布局既要与应用目标车型相匹配,又要保证感应电能传输系统的传输性能及稳定性。基于此,该文首先提出一种适用于实际工程应用的耦合线圈设计及配置方法,从硬件设计的角度出发,综合考虑 ...
作者: 徐先纯,郝娟,郭灿志,肖定国 (北京理工大学机械与车辆学院;江苏大学机械工程学院)
出处: 中国测试 2022 第48卷 第2期 P14-20
关键词: 超声检测;声谐振;界面脱粘;有限元
摘要: 针对多层粘接材料深层界面脱粘检测问题,使用超声谐振检测法进行研究。基于弹簧质量模型分析超声谐振检测的基本原理。在有限元软件中建立某构件二界面脱粘的声谐振检测模型,得到不同大小缺陷以及无缺陷条件下的检测信号,计算得出模型的谐振频率曲线,分析比较典型谐振频率下信号的衰减程度。使用超声谐振检测仪对置有不同 ...