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Minimum-Modified Debye-Hückel Theory for Size-Asymmetric Electrolyte Solutions with Moderate Concentrations

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Chinese Journal of Chemical Physics 2023年第5期36卷 553-560,I0001,I0002页

作者： tiejun xiao Yun Zhou Guizhou Provincial Key Laboratory of Computational Nano-Material Science Guizhou Synergetic Innovation Center of Scientific Big Data for Advanced Manufacturing TechnologyGuizhou Education UniversityGuiyang 550018China

A minimum-modified Debye-Hückel(DH)theory for electrolytes with size asymmetry is ***-pared with the conventional DH theory,the minimum-modified DH theory only introduces an extra surface charge density to capture the electrostatic effect of the size asymmetry of the electrolytes and hence facilitates a boundary element method for electrostatic potential *** theory can distinguish the electrostat-ic energies and excess chemical potentials of ions with the same sizes but opposite charges,and is applied to a binary primitive electrolyte solution with moderate electrostatic *** with the hyper-netted chain theory,the validity of this modified DH theory demonstrates significant improvement over the conventional DH theory.

关键词： Electrolyte solution Size-asymmetry Debye-Hückel theory Electrostatic ener-gy Chemical potential

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基于PCI总线的数据采集接口的研究与实现

微计算机信息 2007年第3S期23卷 93-95页

作者：纪勇肖铁军江苏大学江苏镇江212013

目前部分基于X86体系结构平台的测试仪器已经采用了PCI板卡设备来控制整个测试电路的运行、采集测试数据,因此在PCI板卡上的本地总线与数据采集电路之间需要设计接口电路。本文在分析PCI9054接口控制器的基础上,研究和设计了一种实用的... 详细信息

目前部分基于X86体系结构平台的测试仪器已经采用了PCI板卡设备来控制整个测试电路的运行、采集测试数据,因此在PCI板卡上的本地总线与数据采集电路之间需要设计接口电路。本文在分析PCI9054接口控制器的基础上,研究和设计了一种实用的数据采集接口电路并在现场可编程门阵列器件内部得以实现。实际测试表明能够很好的完成对本地总线的控制、本地中断的处理、数据传输等功能。

关键词： PCI9054 数据采集中断现场可编程逻辑阵列

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边界扫描测试技术在硬件实验中的应用

微计算机信息 2007年第23期23卷 279-281页

作者：赵蕙肖铁军江苏大学计算机科学与通信工程学院镇江212013

本文提出将广泛用于测试领域的边界扫描技术应用在基于FPGA的计算机硬件实验课程中,利用边界扫描技术解决FPGA的配置和测试两大关键问题。在PC机上编写边界扫描主控器的C语言代码,驱动计算机并口对FPGA的TAP引脚进行控制,验证了使用边... 详细信息

本文提出将广泛用于测试领域的边界扫描技术应用在基于FPGA的计算机硬件实验课程中,利用边界扫描技术解决FPGA的配置和测试两大关键问题。在PC机上编写边界扫描主控器的C语言代码,驱动计算机并口对FPGA的TAP引脚进行控制,验证了使用边界扫描方法的正确性。

关键词：边界扫描硬件实验 FPGA TAP

Plastic flow and interfacial bonding behaviors of embedded linear friction welding process:Numerical simulation combined with thermophysical experiment

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Chinese Journal of Aeronautics 2025年第1期38卷 87-98页

作者： tiejun MA Zhenguo GUO Xiawei YANG Junlong JIN Xi CHEN Jun TAO Wenya LI Achilles VAIRIS Liukuan YU State Key Laboratory of Solidification Processing Shaanxi Key Laboratory of Friction Welding TechnologiesNorthwestern Polytechnical UniversityXi'an 710072China Aeronautical Key Laboratory for Welding and Joining Technologies AVIC Manufacturing Technology InstituteBeijing 100024China Mechanical Engineering Department University of West AtticaAthens 12241Greece Mathematic and Physic Department Xianjiaotong-liverpool UniversitySuzhou 215123China

In this study,a new linear friction welding(LFW)process,embedded LFW process,was put forward,which was mainly applied to combination manufacturing of long or overlong loadcarrying titanium alloy structural components in *** interfacial plastic flow behavior and bonding mechanism of this process were investigated by a developed coupling EulerianLagrangian numerical model using software ABAQUS and a novel thermo-physical simulation method with designed embedded hot compression *** addition,the formation mechanism and control method of welding defects caused by uneven plastic flow were *** results reveal that the plastic flow along oscillating direction of this process is even and *** the direction perpendicular to oscillation,thermo-plastic metals mainly flow downward along welding interface under coupling of shear stress and interfacial pressure,resulting in the interfacial plastic zone shown as an inverted“V”*** upward plastic flow in this direction is relatively weak,and only a small amount of flash is extruded from top of ***,the wedge block and welding components at top of joint are always in un-steady friction stage,leading to nonuniform temperature field distribution and un-welded *** to the results of numerical simulation,high oscillating frequency combined with low pressure and small amplitude is considered as appropriate parameter selection scheme to improve the upward interfacial plastic flow at top of joint and suppress the un-welded *** results of thermo-physical simulation illustrate that continuous dynamic recrystallization(CDRX)induces the bonding of interface,accompanying by intense dislocation movement and creation of many low-angle grain *** the interfacial bonding area,grain orientation is random with relatively low texture density(5.0 mud)owing to CDRX.

关键词： Embedded linear friction welding Plastic flow Interfacial bonding behavior Numerical simulation Thermo-physical simulation Temperature field Dynamic recrystallization

面向LwIP的Nios Ⅱ网络驱动程序开发

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微计算机信息 2008年第5期24卷 36-38页

作者：时建雷肖铁军江苏大学计算机学院江苏镇江212013

本文介绍了以DM9000AE作为网络控制器的嵌入式系统以太网通信功能的实现方法。系统设计采用DE2作为开发平台。该系统基于Nios Ⅱ软核处理器,以太网控制器使用DM9000AE;运行μC/OS-Ⅱ操作系统,加载网络协议LwIP。本文研究DM9000AE的初始... 详细信息

本文介绍了以DM9000AE作为网络控制器的嵌入式系统以太网通信功能的实现方法。系统设计采用DE2作为开发平台。该系统基于Nios Ⅱ软核处理器,以太网控制器使用DM9000AE;运行μC/OS-Ⅱ操作系统,加载网络协议LwIP。本文研究DM9000AE的初始化、数据包收发的软件编程算法,重点分析LwIP的网络接口驱动层设计。开发了DM9000AE在LwIP下的驱动程序,完成LwIP在DM9000AE芯片上的移植。最后,通过开发通信软件来测试系统的通信功能。

关键词： Nios Ⅱ LwIP DM9000AE 网络驱动程序

Bulging Performance and Quality Control of Aluminum Alloy Tailor-welded Overlapping Sheets Based on Interface Friction

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Journal of Wuhan University of Technology(Materials Science) 2025年第1期40卷 258-264页

作者： GAO tiejun GAO Bowen LI Weijie ZHANG Jiabin College of Aerospace Engineering Shenyang Aerospace UniversityShenyang 110136China Shenyang Aerospace Xinguang Group Co.L td. Shenyang 110043China

In order to solve the problem of poor formability caused by different materials and properties in the process of tailor-welded sheets forming,a forming method was proposed to change the stress state of tailor-welded sheets by covering the tailor-welded sheets with better plastic properties overlapping *** the same time,the interface friction effect between the overlapping and tailor-welded sheets was utilized to control the stress magnitude and further improve the formability and quality of the tailor-welded *** this work,the bulging process of the tailor-welded overlapping sheets was taken as the research *** alloy tailor-welded overlapping sheets bulging specimens were studied by a combination of finite element analysis and experimental *** results show that the appropriate use of interface friction between tailor-welded and overlapping sheets can improve the formability of tailor-welded sheets and control the flow of weld seam to improve the forming *** increasing the interface friction coefficient on the side of tailor-welded sheets with higher strength and decreasing that on the side of tailor-welded sheets with lower strength,the deformation of the tailor-welded sheets are more uniform,the offset of the weld seam is minimal,the limit bulging height is maximal,and the forming quality is optimal.

关键词： tailor-welded sheets overlapping sheet bulging interface friction weld seam stress

Linux Gadget框架的研究及在USB程控中的应用

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计算机测量与控制 2013年第7期21卷 2011-2014页

作者：陈刚肖铁军郭林江苏大学计算机学院江苏镇江212013

分析了嵌入式仪器的程控功能,针对常用的程控方式效率低、成本高、使用不方便等问题,提出了基于Linux的仪器使用USB程控的设计方案;研究了USB协议及Linux Gadget框架体系结构,指出Gadget框架的UDC驱动层与Gadget驱动层存在直接关联的不... 详细信息

分析了嵌入式仪器的程控功能,针对常用的程控方式效率低、成本高、使用不方便等问题,提出了基于Linux的仪器使用USB程控的设计方案;研究了USB协议及Linux Gadget框架体系结构,指出Gadget框架的UDC驱动层与Gadget驱动层存在直接关联的不足之处,提出了改进方法,基于Gadget框架开发了USB程控驱动及程控程序,并成功应用于基于S3C2440+Linux的半导体特性测试仪器;通过连续发送数据对USB程控程序进行测试,结果表明:USB程控程序在3000kbits/s的传输速率下,数据传输准确,系统运行稳定,USB程控比串口、GPIB及网络程控更方便和高效,可以更有效地发挥嵌入式仪器中程控功能的作用。

关键词：程控仪器 USB Linux Gadget S3C2440