电动车双电机输入减速器设计与研发

电动车双电机输入减速器在电动车上的应用已经相当广泛,但是由中国国内生产制造的目前还没有,为了争取市场主动,韶关一家公司根据市场需求,决定研发自己的双电机输入减速器.首先对国外厂家生产制造的一台电动车双电机输入减速器进行研究、分析和消化.在其基础上,研发设计并制造出来一台适合国内制造精度水平的电动车双电机输入减速器.样机进行了室内试验台上测试并取得一些数据成果.     

Simulating mechanical behavior of porous materials by homogenization method

In this study, a homogenization method is employed to determine the values of effective elastic modulus for BaZrO₃ which is a promising candidate material for electrolyte in solid oxide fuel cell (SOFC). Comparison between the homogenization and the analysis data reveals that the difference becomes significant with increasing of porosity when upper 20%. The empire mechanic behavior in a typical planar fuel cell is evaluated using finite element method (FEM). Large stress gradient occurs in vicinity of the interface of the electrolyte and the cathode due to theirs mismatch of thermal expansion coefficient (TEC). Moreover, local processing results reveal that microscopic stress concentration around pore near the interface of the electrolyte and the cathode in the cell perhaps produces cracks which may lead to the fail of the electrolyte and the lower energy convention efficiency.     

浅谈宗教艺术

宗教与艺术是一个相互不可分离的混合体,宗教色彩伴随着艺术的起源与发展。宗教艺术的特点是这一艺术不但具备宗教文化,而且具有很高的审美价值,是赋有浓郁精神内涵的艺术形式。     

高速铁路线路轨面坡度及竖曲线半径动态测量方法及应用研究

为揭示高速铁路线路纵断面参数变化,以及和轨道不平顺、路基大桥沉降关系,针对国内尚无轨道纵断面参数动态检测装备,提出基于惯组的轨面坡度及竖曲线半径动态测量方法。首先,建立转向架构架及惯性坐标系,并以重力加速度、水平加速度极小相关性为基准对齐两坐标系;其次,基于转向架构架纵向加速度解算轨面坡度,并补偿列车俯仰运动及与轨道平面纵向倾角误差;然后,以坡度测量值为基础解算竖曲线半径;最后,以高速综合检测列车为平台,在国内某新建高速铁路实车试验。结果表明：坡度和竖曲线曲率重复性偏差绝对均值分别为0.07‰、0.71×10^-3 rad/km,极差分别为0.22‰、0.005 rad/km。