摘要：Bumper beam is one of the key structural parts,which plays an important role in the frontal crashes of *** the global trend of light-weighted automotive parts,the light weight of bumper beam attracts extensive attention of automobile manufacturers,and hot stamping technology with significant weight advantage has become one of the main light weight measures for bumper *** quasi-static press,low speed crash and frontal crash simulation models of bumper beam were established according to its actual working conditions in the automobile *** feasibility of replacing normal steel bumper beam with hot stamping bumper beam was ***,the stiffeners in the front face of hot stamping bumper beam were optimized with topography optimization in order to further improve its performances.

摘要：Impact testing is a primary method to evaluate the impact property of resistance spot welding,which is an important quality index in automotive *** testing impact properties of spot welds,many customized testers have been *** paper summarized some of the impact testers reported in open literatures and the emphasis was placed on the equipment structures,functions,technical parameters,advantages and disadvantage,*** key issues about the development of the testers such as kinematic energy input mode,fixture design,combined load testing,sensor and data acquisition were ***,the problems and prospects in the research and development of impact testers for spot welds were pointed out.

摘要：V-shape hulls are widely used in peacekeeping efforts such as demining vehicles in order to deflect the blast energy and reduce the effects of mine blast. Blast resistant design and energy absorption enhancement of V-shape plates were carried out using finite element analysis package ABAQUS. Various geometries of V-shape plates with and without interlayer of materials like Al-foams and honeycomb were employed to analyze their effects on the deformation of the plate and applied stresses and strains. The results obtained show that application of metallic foams leads to better response of the plate and consequently results in more energy dissipation, less dame to vehicle and enhances crew survivability.

摘要：为了增强新一代车辆的功能和安全性,收集了大量的车辆行驶历史数据,利用机器学习方法创建基于规则的计算模型,以检测车队中的故障车辆。详细介绍了模型的设计步骤,并通过低压电池的电气故障测试进行该方法的有效性验证。分析结果可供后续车型台架测试参考。

摘要：With the aim of reducing the cost of developing internal combustion engines,while at the same time investigating different geometries,layouts and fuels,3D-CFD-CHT simulations represent an indispensable part for the development of new *** tools are increasingly used by manufacturers,as a screening process before building the first *** paper presents an innovative methodology for virtual engine *** 3D-CFD tool QuickSim,developed at FKFS,allows both a significant reduction in computation time and an extension of the simulated domain for complete engine *** is possible thanks to a combination of coarse meshes and self-developed internal combustion engine models,which simultaneously ensure high *** present work demonstrates the capabilities of this innovative methodology for the design and optimization of different engines and fuels with the goal of achieving the highest possible combustion efficiencies and pollutant *** analysis focuses on the influence of different fuels such as hydrogen,methanol,synthetic gasolines and methane on different engine geometries,in combination with suitable injection and ignition systems,including passive and active *** operations as well as knock reduction are discussed,particularly for methane and hydrogen ***,it is shown how depending on the chosen fuel,an appropriate ad-hoc engine layout can be designed to increase the indicated efficiency of the respective engines.

摘要：给出了一种基于斯图加特驾驶模拟器虚拟控制单元的主观标定方法,实现了一款双离合变速器的完全虚拟化控制单元的标定.通过离线模拟及实验设计方法,生成关于换档舒适性和换档规律的最佳数据集.然后,在驾驶模拟器上测试数据集,以此开展测试人员主观驾驶体验研究.结果表明,换挡操作过程可以有效复现,同时不同数据集的差异可以主观识别.

摘要：With the development of automobile lightweight,it is very necessary to apply the ultra-high strength steel parts manufactured by hot stamping,which offers the possibility to reduce the weight of automobiles and maintain the safety *** order to complete hot stamping,it is important to design the structure of parts reasonably,which is related with reasonable matching of *** objective of this paper is to guide the design of parts manufactured by hot stamping and find the forming technical requirements of vehicle *** experiments,the paper obtains the stress and strain curves at different deformation temperatures and strain *** on experimental data, the constitutive relationship model is established which can reflect the deformation capacity of ultra-high strength steel during the process of hot *** with finite element simulation results of hot stamping by commercial software AUTOFORM,transfer path of load and matching law of strength,the paper determines the design criteria and forming technical requirements of parts manufactured by hot *** the same time,the impact performance of front cross member internal plate is taken into consideration.

摘要：The superconducting cyclotron SC200 is intended to generate a 200 MeV, 400 nA proton beam for future particle therapy. The internal hot-cathode-type Penning ionization gauge (PIG) ion source for the SC200 is designed for the generation of hydrogen ions. A brief description of the design of ion source and test bench, which are used in SC200, is given in this paper. The ion source has been verified on the test bench, and the results indicated that the designed ion source meets the expected requirements. The lifetime of the filament exceeded 100 h in the test. In addition, the extraction voltage and the gas flow that influence the extracted ion current intensity have been tested in the experiment.

摘要：The dynamic responses of suspension system of a vehicle travelling at varying speeds are generally nonstationary random processes,and the non-stationary random analysis has become an important and complex problem in vehicle ride dynamics in the past few *** paper proposes a new concept,called dynamic frequency domain(DFD),based on the fact that the human body holds different sensitivities to vibrations at different frequencies,and applies this concept to the dynamic assessment on non-stationary *** study mainly includes two parts,the first is the input numerical calculation of the front and the rear wheels,and the second is the dynamical response analysis of suspension system subjected to non-stationary random *** time integration method is used to obtain the vertical acceleration of suspension barycenter and the pitching angular acceleration,both root mean square(RMS)values of which are illustrated in different accelerating *** results show that RMS values of non-stationary random excitations are functions of time and increase as the speed increases at the same *** DFD of vertical acceleration is finally analyzed using time-frequency analysis technique,and the conclusion is obviously that the DFD has a trend to the low frequency region,which would be significant reference for active suspension design under complex driving conditions.

摘要：为了优化车辆开发过程的有效性,数值气动声学分析法的实施和应用对汽车制造商来说变得越来越重要。提出了一种结合延迟分离涡流模拟和基于Lighthill方程及声学扰动方程的有限元模型混合数值工具,应用OpenFOAM和Actran软件实现了基于声学有限元法的近场声源区提取及声学压力脉动计算,并尝试应用于车顶扰流板及后视镜区域的气动噪声计算及分析。在兰博基尼Urus车型上,研究了不同车顶扰流板设计的气动声学行为,将仿真结果与斯图加特大学气动声学全尺寸风洞的实验结果进行比较,发现了令人信服的相关性。此外,探讨了扰流板上的主要噪声产生机制,研究了汽车表面压力波动水平随几何形状改变的变化情况。