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4091.微型电动观光车底盘结构分析与优化
[汽车制造业] [2014-03-24]
We finished the miniature electric touring car chassis structure finite element analysis.Mainly for the miniature electric touring car chassis uniform rectilinear driving condition,the distribution of deformation and stress analysis,According to the above data to optimize the chassis structure,and verified the rationality.
关键词：汽车；微型车；电动观光车；底盘；优化分析
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4092.烫印过程中DP钢发动机罩的结构分析和质量预测
[汽车制造业,黑色金属冶炼和压延加工业] [2014-03-24]
In the paper,it took the hot stamping process of DP steel engine hood for example and took DP800 as object of research.The forming limit,variation of major strain,minor strain and thickness,as well as the potential equality defects were analyzed by using eta/DYNAFORM software.The research results show that duplex steel plate can meet the performance requirements of car engine dumping plank forming,which offers theory basis for the production of similar parts.
关键词：钢铁；应变分析；发动机罩；烫印
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4093.X65钢压力管焊接接头断裂韧性的统计分布分析
[黑色金属冶炼和压延加工业] [2014-03-24]
It is important for the design engineer to realize that scatter and variability of materials properties are inevitable and must be dealt with appropriately.The program,which plays an important role in structure reliability analysis,can be used to determine the probability statistic distribution of the mechanical properties.The calculated results indicate that the weld fracture toughness of the X65 pressure pipe steel can either accord with normal distribution,lognormal distribution or weibull distribution,but the optimum fitting distribution of the fracture toughness cδc is weibull distribution.
关键词：钢铁；随机分布；断裂韧性；X65钢压力管；计算机分析
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4094.基于可拓工程的车身理想基本模型获得的变截面方法
[汽车制造业] [2014-03-24]
Through obtaining the solutions for conflict problem in the auto-body styling aerodynamic design cooperating extension engineering, a variable cross-section method based on aero dynamic theoretical model to obtain ideal basic shape for car body is proposed.A theory model based on aerodynamics is developed.In addition, a generation method for a series of ideal basic bodies with favorable aerodynamic characteristics is developed, which enables the generation of these basic bodies by a variable cross-section method.This method is finally realized and it is shown in the evaluation that it is a new way for the auto-body styling design based on whole shape optimization.
关键词：汽车；车身模型；变截面；可拓工程
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4095.V型防烟火自动阀的故障模式分析
[黑色金属冶炼和压延加工业] [2014-03-24]
Current V-shaped stainless steel pyrovalve initiators have rectified many of the deficiencies of the heritage Y-shaped aluminum design. However, a credible failure mode still exists for dual simultaneous initiator (NSI) firings in which low temperatures were detected at the booster cap and less consistent ignition was observed than when a single initiator was fired. In order to asses this issue, a numerical framework has been developed for predicting the flow through pyrotechnically actuated valves.
关键词：钢铁；v型不锈钢；故障模式；烟火装置；调节阀；计算流体动力学
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4096.高铬钢辊在锻造退火状态的微观结构分析
[黑色金属冶炼和压延加工业] [2014-03-24]
This paper investigates the annealed microstructure of a new high chrome steel for roiler,using methods of SEM、DES、XRD and hardness tests.The results show that the spheroidizing annealed high chromium steel is constitutive of ferrite and globular cementite,and the microstructure is relatively reasonable.But there are disadvantage characters such as small holes in the vicinity of the grain boundary,and residual lamellar pearlite exists in local area.In this paper,generation mechanisms of these characters are explained,and prevention methods are given for the weakness of the high chorme steel for roller.
关键词：钢铁；高铬钢辊；球化退火；微观结构
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4097.通过提高成碳减小高分子材料的可燃性——总结报告
[黑色金属冶炼和压延加工业,有色金属冶炼和压延加工业,化学原料和化学制品制造业] [2014-03-24]
One weak aspect of synthetic polymer materials compared with steel and other metals is that these materials are combustible under certain conditions. Thus, the majority of polymer-containing end products must pass some type of regulatory test to assure public safety from fire. The main objective of this research is to apply combined effects of a catalyst in a clay-based polymer nanocomposite to enhance formation of char from a resin to form a protective layer consisting of char enhanced clay network during burning.
关键词：钢铁；高分子；碳化；可燃性；复合材料
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4098.智能电动汽车电机速度控制器设计与实施
[汽车制造业] [2014-03-24]
Motor operates as the power source of the vehicles,which is one of the most important parts in the vehicle system.This paper is going to find out the speed control method of the DC motor of Golf electrical cars from both theory and practice.A virtual instrument,which produces the Pulse Width Modulation (PWM) signal,is developed with LabVIEW to control the motor speed.This smart motor speed controller differs from the traditional mechanical control of DC motor in daily life,and is instructive and significant as a new speed control method of vehicle motor.
关键词：汽车；智能电动车；电机；速度控制器；PWM
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4099.基于摄像传感器的智能汽车控制系统设计与实现
[汽车制造业] [2014-03-24]
In this paper we propose a intelligent vehicle system design with MK60NS12VMD100 as the micro-controller unit and CMOS image sensor to obtain image information of the track.Our proposed comparator circuit instead of an A/D conversion to obtain the binary image enables us to achieve a bigger field of view and a higher processing speed.A unique algorithm to extract track information and to successfully extract the black guide line is devised.We also design a PID closed-loop control to adjust the rotate speed of driving electromotor and direction of steering electromotor.The results indicate that our design proposal is feasible.The intelligent vehicle could successfully achieve a high speed,while maintaining an excellent stability.
关键词：汽车；智能汽车；ARM处理器；传感器；路线跟踪；PID
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4100.基于电磁技术的智能汽车系统
[汽车制造业] [2014-03-24]
Introduce Fressscale MC9S12XS256 as the core control unit of the self-tracing smart car system.Fast and accurate information extracting and processing is the guarantee of the sensitive smart car quickly moving along the track.To the smart car system based on electromagnetic technology,create one method of path position detection and its technology details.Tests show this method can be good at forward-looking,real-time and accuracy.
关键词：汽车；智能汽车；电磁技术；路径定位
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