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Darui Wang, Hongmin Sun, Wei Liu, Zhenhao Shen, Weimin Yang
《化学科学与工程前沿(英文)》 2020年 第14卷 第2期 页码 248-257 doi: 10.1007/s11705-019-1853-9
关键词: hierarchical ZSM-5 zeolite protective desilication piperidine radial mesopores benzene alkylation
Shoujun CHEN, Qiang LI, Qi AN,
《机械工程前沿(英文)》 2010年 第5卷 第3期 页码 302-307 doi: 10.1007/s11465-010-0018-9
关键词: conic threaded connections interference fit radial stress deformation finite element analysis (FEA)
Different manipulation mode analysis of a radial symmetrical hexapod robot with leg–arm integration
《机械工程前沿(英文)》 2022年 第17卷 第1期 页码 8-8 doi: 10.1007/s11465-021-0664-0
关键词: leg–arm integration hexapod robot fixed coordinated manipulation mobile manipulation
Comparison of optimal capacitor placement methods in radial distribution system with load growth and
Veera Venkata Satya Naryana MURTY, Ashwani KUMAR
《能源前沿(英文)》 2013年 第7卷 第2期 页码 197-213 doi: 10.1007/s11708-013-0249-7
关键词: load growth load models reactive power compensation radial distribution system power loss index (PLI) power loss sensitivity (PLS) index vector (IV)
A total torque index for dynamic performance evaluation of a radial symmetric six-legged robot
Kejia LI, Xilun DING, Marco CECCARELL
《机械工程前沿(英文)》 2012年 第7卷 第2期 页码 219-230 doi: 10.1007/s11465-012-0320-9
This article focuses on the dynamic index and performance of a radial symmetric six-legged robot. At first the structure of the robot is described in brief and its inverse kinematics is presented. Then the dynamic model is formulated as based on the Lagrange equations. A novel index of total torque is proposed by considering the posture of the supporting legs. The new index can be used to optimize the leg’s structure and operation for consuming minimum power and avoiding unstable postures of the robot. A characterization of the proposed six-legged robot is obtained by a parametric analysis of robot performance through simulation using the presented dynamic model. Main influences are outlined as well as the usefulness of the proposed performance index.
An efficient stochastic dynamic analysis of soil media using radial basis function artificial neural
P. ZAKIAN
《结构与土木工程前沿(英文)》 2017年 第11卷 第4期 页码 470-479 doi: 10.1007/s11709-017-0440-8
关键词: stochastic analysis random seismic excitation finite element method artificial neural network frequency domain analysis Monte Carlo simulation
《机械工程前沿(英文)》 2023年 第18卷 第3期 doi: 10.1007/s11465-023-0763-1
关键词: UVSRR system radial electromagnetic type vibration suppression performance simulation engineering application
Wanghui BU, Zhenyu LIU, Jianrong TAN, Jin CHENG
《机械工程前沿(英文)》 2011年 第6卷 第4期 页码 463-467 doi: 10.1007/s11465-011-0225-z
The shield machine is a heavy construction machine for tunnel excavation, and the segment erector is an important subsystem of the shield machine. It is difficult to achieve precise control in the 6-DOF (degree of freedom) erector in the 2-DOF 5-bar radial mechanism. Hence, this paper proposes a redundantly actuated PRPRP radial mechanism for the segment erector. When the redundant actuator is unlocked, the radial mechanism is able to adjust its posture, which has two degrees of freedom. On the other hand, when the redundant actuator is locked or produces enough pre-tightening tensile force, the PRPRP mechanism can ensure the synchronization of the two driving hydraulic cylinders along the radial direction based on the mechanical structure, which has one degree of freedom. The redundant actuator also facilitates the equal application of two flexural torques at the hydraulic cylinders; thus, preventing the overload of a single cylinder.
关键词: redundant actuation parallel mechanisms five-bar mechanisms segment erectors shield machines
一种基于变异算子与淘汰重组机制的改进GWO及其应用 Article
Xiao-qing ZHANG, Zheng-feng MING
《信息与电子工程前沿(英文)》 2017年 第18卷 第11期 页码 1705-1719 doi: 10.1631/FITEE.1601555
堆积床相变储热系统中径向孔隙率振荡分布对热性能的影响 Article
刘红兵, 赵长颖
《工程(英文)》 2021年 第7卷 第4期 页码 515-525 doi: 10.1016/j.eng.2020.05.020
由于具有较高的储热能力和传热速率,堆积床相变储热被认为是一种很有潜力的储热方法。在堆积床中,壁面效应会影响相变胶囊的填充结构,从而引起径向孔隙率的振荡。本研究建立了一个基于球体实际堆积过程的三维堆积床相变储热模型,以描述径向孔隙率的振荡分布,并分析了其内部的流动和传热情况。通过在堆积床中沿径向不同位置截取圆柱面,揭示了相变胶囊的排列与径向孔隙率之间的对应关系。径向孔隙率的振荡分布导致换热流体速度呈不均匀分布,因此相变材料的径向温度分布和液相分数分布进一步受到影响。此外,本文讨论了不同的无量纲参数(如管与胶囊的直径比、雷诺数和史蒂芬数)对换热流体和相变材料径向特性的影响。结果表明,不同的直径比对应于不同的径向孔隙率分布。此外,随着直径比的增加,在壁面附近区域换热流体速度显著变化,而中心区域换热流体速度的不均匀性将减小。雷诺数和史蒂芬数对换热流体的相对速度分布有轻微影响,而更高的雷诺数可导致速度成比例地提高,史蒂芬数的增加可加快堆积床相变储热系统的储热过程。
《化学科学与工程前沿(英文)》 2023年 第17卷 第4期 页码 387-394 doi: 10.1007/s11705-022-2250-3
关键词: self-activation zinc organic salts abundant mesopores symmetric supercapacitor liquid electrolyte
Chuangnian Zhang, Ying Dong, Jing Gao, Xiaoli Wang, Yanjun Jiang
《化学科学与工程前沿(英文)》 2021年 第15卷 第5期 页码 1296-1311 doi: 10.1007/s11705-020-2034-6
关键词: silica nanoflower antigen delivery cancer immunotherapy nanovaccine
张俊艳,魏连伟,韩文秀,邵景力,崔亚丽,张建立
《中国工程科学》 2004年 第6卷 第8期 页码 74-78
水文地质参数识别问题是水文地质学上的一个难题。针对传统水文地质参数识别方法的局限性,提出了水文地质参数识别的径向基函数(RBF )神经网络方法,并通过算例验证了它的可行性与有效性,实现了水文地质参数的自动识别,提高了计算效率,比BP神经网络具有更好的参数识别效果。
关键词: 地下水 水文地质参数 径向基函数(RBF)神经网络 BP神经网络
《医学前沿(英文)》 2022年 第16卷 第2期 页码 227-239 doi: 10.1007/s11684-021-0896-8
关键词: cannabidiol depression radial neural stem cells neurogenesis
Zhenhao Wei,Tengfei Xia,Minghui Liu,Qingsheng Cao,Yarong Xu,Kake Zhu,Xuedong Zhu
《化学科学与工程前沿(英文)》 2015年 第9卷 第4期 页码 450-460 doi: 10.1007/s11705-015-1542-2
关键词: aromatics ZSM-5 alkaline treatment dealumination desilication mesopores methanol
标题 作者 时间 类型 操作
Hierarchical ZSM-5 zeolite with radial mesopores: Preparation, formation mechanism and application for
Darui Wang, Hongmin Sun, Wei Liu, Zhenhao Shen, Weimin Yang
期刊论文
Calculation method of radial stress and deformation on conic threaded connections with interference fit
Shoujun CHEN, Qiang LI, Qi AN,
期刊论文
Different manipulation mode analysis of a radial symmetrical hexapod robot with leg–arm integration
期刊论文
Comparison of optimal capacitor placement methods in radial distribution system with load growth and
Veera Venkata Satya Naryana MURTY, Ashwani KUMAR
期刊论文
A total torque index for dynamic performance evaluation of a radial symmetric six-legged robot
Kejia LI, Xilun DING, Marco CECCARELL
期刊论文
An efficient stochastic dynamic analysis of soil media using radial basis function artificial neural
P. ZAKIAN
期刊论文
Radial electromagnetic type unbalance vibration self-recovery regulation system for high-end grinding
期刊论文
A redundantly actuated PRPRP radial mechanism in the segment erector of a shield machine for synchronization
Wanghui BU, Zhenyu LIU, Jianrong TAN, Jin CHENG
期刊论文
Hierarchical porous carbon derived from one-step self-activation of zinc gluconate for symmetric supercapacitors with high energy density
期刊论文
Cannabidiol prevents depressive-like behaviors through the modulation of neural stem cell differentiation
期刊论文