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车华军,陈南,殷国栋
《中国工程科学》 2009年 第11卷 第9期 页码 81-86
以某型轿车底盘为研究对象,采用虚拟样机软件ADAMS建立整车多体动力学仿真模型;结合汽车操纵稳定性的客观定量评价标准,建立了直接生成操纵稳定性评价值的ADAMS函数;用ADAMS软件结合正交试验方法对整车操纵稳定性进行了虚拟正交优化设计。虚拟样机技术在车辆操纵稳定性参数正交优化中的应用,不仅使仿真模型与集中质量模型相比提高了精度,还分析出整车操纵稳定性的主要零部件影响因素,得到了最优的一组设计方案。由于是直接对具体零部件的优化,整个设计过程适于在企业中应用。
秦书玉,秦伟瀚
《中国工程科学》 2003年 第5卷 第10期 页码 52-55
应用正交设计优化煤层注水工艺参数的组合,对地质条件稳定的煤层是实现最佳注水效果的一种较好的方法。但是,对于地质条件不断变化的煤层,采用该方法,其效果不一定能满足注水工程要求。为此,针对地质因素为不稳定状态下的煤层及影响煤层注水的地质因素既有定性变量又有定量变量的特征,提出利用数量化理论与正交设计2种方法确定注水工艺参数的最优组合,并进行了工程试验优化研究。试验结果表明,此法节省注水试验工程量,接近实际工程要求。
蔡安辉,刘永刚,孙国雄
《中国工程科学》 2003年 第5卷 第7期 页码 67-71
用不同的L9(34)正交实验方案结果作为训练学习样本集,对BP神经网络预测应用过程的策略进行了探讨,结果表明:完备的正交实验样本集是基本训练学习单元,在完备的正交实验样本集上添加或减少样本数量,所预测的结果是不可靠的;在同一类型、同一实验的条件下,完备的信息量大的正交实验样本集,能以很高的精度预测完备的信息量小的正交实验样本集;提出了一条新的实验设计思路——通过实验得出一个完备的正交实验样本集,通过计算机用BP神经网络就可以把与已知样本集有相同影响因素和水平的所有样本的值以相当高的精度预测出来,从而大大节省时间和劳力。
Improved analytical model for residual stress prediction in orthogonal cutting
null
《机械工程前沿(英文)》 2014年 第9卷 第3期 页码 249-256 doi: 10.1007/s11465-014-0310-1
The analytical model of residual stress in orthogonal cutting proposed by Jiann is an important tool for residual stress prediction in orthogonal cutting. In application of the model, a problem of low precision of the surface residual stress prediction is found. By theoretical analysis, several shortages of Jiann’s model are picked out, including: inappropriate boundary conditions, unreasonable calculation method of thermal stress, ignorance of stress constraint and cyclic loading algorithm. These shortages may directly lead to the low precision of the surface residual stress prediction. To eliminate these shortages and make the prediction more accurate, an improved model is proposed. In this model, a new contact boundary condition between tool and workpiece is used to make it in accord with the real cutting process; an improved calculation method of thermal stress is adopted; a stress constraint is added according to the volume-constancy of plastic deformation; and the accumulative effect of the stresses during cyclic loading is considered. At last, an experiment for measuring residual stress in cutting AISI 1045 steel is conducted. Also, Jiann’s model and the improved model are simulated under the same conditions with cutting experiment. The comparisons show that the surface residual stresses predicted by the improved model is closer to the experimental results than the results predicted by Jiann’s model.
关键词: residual stress analytical model orthogonal cutting cutting force cutting temperature
Machinability of damage-tolerant titanium alloy in orthogonal turn-milling
Tao SUN, Lufang QIN, Junming HOU, Yucan FU
《机械工程前沿(英文)》 2020年 第15卷 第3期 页码 504-515 doi: 10.1007/s11465-020-0586-2
关键词: orthogonal turn-milling damage-tolerant titanium alloy tool life and failure machined surface integrity machinability
A new performance evaluation method and its application in fin-tube surface design of small diameter
Jufang FAN, Weikun DING, Zhigeng WU, Yaling HE, Wenquan TAO, Yongxin ZHENG, Yifeng GAO, Ji SONG
《能源前沿(英文)》 2011年 第5卷 第1期 页码 59-68 doi: 10.1007/s11708-010-0132-8
关键词: performance evaluation orthogonal design small-diameter tube
Singularity loci of an orthogonal spherical two-degree-of-freedom parallel mechanism
Jialun YANG, Feng GAO,
《机械工程前沿(英文)》 2009年 第4卷 第4期 页码 379-385 doi: 10.1007/s11465-009-0075-0
关键词: 2-DOF orthogonal spherical parallel mechanism singularity loci self-motions
Variable eccentric distance-based tool path generation for orthogonal turn-milling
Fangyu PENG,Wei WANG,Rong YAN,Xianyin DUAN,Bin LI
《机械工程前沿(英文)》 2015年 第10卷 第4期 页码 352-366 doi: 10.1007/s11465-015-0361-y
This study proposes an algorithm for maximizing strip width in orthogonal turn-milling based on variable eccentric distance. The machining error model is first established based on the local cutting profile at the contact line. The influencing factors of the strip width are then investigated to analyze their features and determine an optimizing strategy. The optimized model for maximum machining strip width is formulated by adopting a variable eccentric distance. Hausdorff distance and Fréchet distance are introduced in this study to implement the constraint function of the machining error in the optimized model. The computing procedure is subsequently provided. Simulations and experiments have been conducted to verify the effectiveness of the proposed algorithm.
关键词: orthogonal turn-milling variable eccentric distance local cutting profile machining strip-width maximization
Design and stability analysis of continuous skew tied-arch bridge over Bin Jiang River
YU Jiancheng, TONG Hao, HUANG Wei
《结构与土木工程前沿(英文)》 2008年 第2卷 第1期 页码 37-42 doi: 10.1007/s11709-008-0004-z
关键词: out-plane buckling unremarkable crossbeam stability analytical orthogonal
史小红
《中国工程科学》 2012年 第14卷 第3期 页码 108-112
提出了一种采用双正交复序列的高效扩频调制与解调方法(DoCS)。输入数据比特流被分割为长度为M的组,每组的M比特作为输入码字,从2M-2个长度为L的DoCS序列中选择一条序列进行发送,被选中的序列以QPSK方式调制在载波上,实现扩频通信。文中还提出了一种前向相位校正(FPC)方法来解决该系统中收发两端的载波同步问题。
Development and road performance of clear asphalt with high transparency and adhesion
《结构与土木工程前沿(英文)》 2023年 第17卷 第2期 页码 238-255 doi: 10.1007/s11709-022-0898-x
关键词: light-colored asphalt pavement orthogonal test road performance spectral reflectance silane-coupling agent
New computational treatment of optical wave propagation in lossywaveguides
Jian-xin ZHU,Guan-jie WANG
《信息与电子工程前沿(英文)》 2015年 第16卷 第8期 页码 646-653 doi: 10.1631/FITEE.1400406
关键词: Adjoint operator Orthogonal Chebyshev Pseudospectral method Dirichlet-to-Neumann map
Precision control system of two-DOF stage with linear ultrasonic motor
ZHANG Hanlei, SHI Yunlai, ZHAO Chunsheng
《机械工程前沿(英文)》 2008年 第3卷 第4期 页码 421-425 doi: 10.1007/s11465-008-0063-9
关键词: settling position accuracy PI control control algorithm orthogonal
Extraction and biodegradation of ginkgolic acids from
Qi LI, Wei SUN, Yan JIANG, Fuliang CAO, Guibin WANG, Linguo ZHAO
《农业科学与工程前沿(英文)》 2017年 第4卷 第4期 页码 465-472 doi: 10.15302/J-FASE-2017181
关键词: biodegradation extraction ginkgolic acid laccase orthogonal method
Novel seed-assisted synthesis of indium tin oxide submicro-cubes and their resistivity
《化学科学与工程前沿(英文)》 2023年 第17卷 第5期 页码 557-569 doi: 10.1007/s11705-022-2249-9
关键词: indium tin oxide submicro-cubes resistivity seed-assisted coprecipitation method orthogonal experiment
标题 作者 时间 类型 操作
Machinability of damage-tolerant titanium alloy in orthogonal turn-milling
Tao SUN, Lufang QIN, Junming HOU, Yucan FU
期刊论文
A new performance evaluation method and its application in fin-tube surface design of small diameter
Jufang FAN, Weikun DING, Zhigeng WU, Yaling HE, Wenquan TAO, Yongxin ZHENG, Yifeng GAO, Ji SONG
期刊论文
Singularity loci of an orthogonal spherical two-degree-of-freedom parallel mechanism
Jialun YANG, Feng GAO,
期刊论文
Variable eccentric distance-based tool path generation for orthogonal turn-milling
Fangyu PENG,Wei WANG,Rong YAN,Xianyin DUAN,Bin LI
期刊论文
Design and stability analysis of continuous skew tied-arch bridge over Bin Jiang River
YU Jiancheng, TONG Hao, HUANG Wei
期刊论文
New computational treatment of optical wave propagation in lossywaveguides
Jian-xin ZHU,Guan-jie WANG
期刊论文
Precision control system of two-DOF stage with linear ultrasonic motor
ZHANG Hanlei, SHI Yunlai, ZHAO Chunsheng
期刊论文
Extraction and biodegradation of ginkgolic acids from
Qi LI, Wei SUN, Yan JIANG, Fuliang CAO, Guibin WANG, Linguo ZHAO
期刊论文