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4121.基于ANSYS的汽车后视镜振动模态分析和结构优化设计
[汽车制造业] [2014-03-21]
In this paper,we use the finite element software ANSYS to simulate the vibration frequency and vibration modals of the car rear-view mirror under the condition of excitation sources.Based on this and the strength analysis results of the rear-view mirror,we make a optimal design of the rear-view mirror structure.We get five-order vibration modals in working condition and analysis the size of displacement and deformation,and dynamic characteristics.The results show that because of the low modal frequency,the car rear-view mirror is easily inspired by the engine,powertrain system and road to vibrate.
关键词：汽车；后视镜；振动模态；优化设计；ANSYS
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4122.电动汽车无刷直流电机的仿真研究
[汽车制造业] [2014-03-21]
Aiming at working out how to apply the brushless DC motor to the electric car,a control systemwas designed after a series of related researches.With the basic principles and methods of operating the brushless DC motor being studied,the sirmlation model of controlling the brushless DC rrotor was designed by MATLAB software,and the related parameters were analyzed and studied.The results showed that the brushless DC motor had good controllability,which made it suitable for the application to the electric car.
关键词：汽车；电动汽车；无刷直流电机；控制
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4123.集装箱侧吊自加载装置的设计方法
[汽车制造业] [2014-03-21]
The self-loading device used for side-crane is put forward.Its structure is presented.Based on the force analysis when the side-crane works at flat ground,the mathematical model is established when the crane working at uneven ground.And the design calculation is performed.The self-loading device's optimal design is accomplished.Based on the above calculation results,the self-loading prototype is manufactured.And the design method can be adopted to the similar equipment's structural design.
关键词：汽车；集装箱；侧吊；自加载装置；优化设计
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4124.车辆碰撞相容性协议增强的评价：皮卡和SUV首要及次要能量吸收结构的有效性
[汽车制造业] [2014-03-21]
The Enhancing Vehicle-to-Vehicle Crash Compatibility Agreement (EVC) was established in 2003 as a voluntary measure to reduce occupant fatalities of passenger cars in crashes with light trucks and vans, including pickup trucks, SUVs, minivans, and full-size vans, generically abbreviated as LTVs.these results provide some evidence that the EVC has reduced fatalities but are not sufficiently strong to permit an unequivocal conclusion that it has been effective in reducing fatality risk to car occupants.
关键词：汽车；车辆碰撞；车辆碰撞相容性协议；能量吸收结构
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4125.燃油喷油泵柱塞弹簧的模糊多目标优化设计
[汽车制造业] [2014-03-21]
Fuzzy theory and multi-objective optimization technology were applied to design fuel injector pump plunger spring based on consideration on its force condition.The mathematical model for the multi-objective optimization design was built under the objective of the maximal fatigue safety coefficient,the minimal weight and height,with the design variable of wire diameter d,mean diameter D and working circle n.Then,the fuzzy solution of multi-objective optimization were use to solve the model.
关键词：汽车；燃油喷射泵；柱塞弹簧；多目标最优化；优化设计
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4126.提升二级轻气发射器效能的薄不锈钢破裂盘的设计和特性研究
[黑色金属冶炼和压延加工业] [2014-03-21]
This project consisted of determining how to manufacture burst disks out of stainless steel shim stock, devising a fixture to reliably laser etch the surface of the SSBDs, determining parameters for the laser etching, test the SSBDs for reliability and calibrating them for burst pressure, implementing the SSBDs into the 17-cal launcher, modifying existing launcher components, and finally evaluating SSBD’s effect on launcher performance.
关键词：钢铁；爆破试验；不锈钢；二级轻气；试验设计
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4127.单一驱动形状记忆合金的耦合
[黑色金属冶炼和压延加工业] [2014-03-21]
The objective of the single-motion-actuated- shape-memory-alloy coupling (SMA2C) is to produce a small, single motion actuator used to secure andthen release the solar panels on a CubeSat, or other very small satellite, upon command.
关键词：钢铁；形状记忆合金；二元合金；驱动器
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4128.混合动力电动汽车功率分流模式分析
[汽车制造业] [2014-03-20]
EVT transmission in Planetary Gear Hybrid Electric Vehicles makes it available that the engine works on the optimal curves; yet because of the speed limitation of motor MG1,the maximum output power of the engine is a function of vehicle speed.The maximum traction and regenerative braking power is also a function of vehicle speed.Based on this,the vehicle drive modes consist of EV mode,economy mode and power mode,and braking modes include the regenerative braking mode and electromechanical braking mode.
关键词：汽车；电子式电压互感器；单株；驱动模式；制动模式
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4129.金属基复合材料高速铣削技术的改进
[汽车制造业] [2014-03-20]
The research content was limited to the effect of cutting parameters on the machined surface quality or cutting forces. It is suggested that high-speed milling with PCD tool should be conducted in order to improve the machined surface quality and material removal rate and decrease the machining cost. Tool life modeling, surface roughness prediction, cutting parameters optimization and high-speed milling data base and the expert system should be greatly noticed by the researchers.
关键词：汽车；金属基复合材料；高速铣削；机械性能；优化参数
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4130.无铅奥氏体不锈钢的发展
[黑色金属冶炼和压延加工业] [2014-03-20]
Pb-free austenitic stainless steels were investigated by adding sulfur, rare earth (Re) elements and bismuth. The metallurgical properties, machinability and mechanical properties of both steels were examined. The results show that a significant amount of grey, spindle shaped inclusions were discovered in austenitic stainless steels, and they should belong to MnS inclusions containing bismuth element and rare earths oxide.
关键词：钢铁；机械加工性；无铅奥氏体不锈钢；稀土
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