试论装饰画中的点、线、面

本文较详细的论述了点，线，面在装饰艺术图形中的运用成因，特性和功能。同时对图形中的诸多因素进行了全面的分析和系统的阐述，指出了它们之间的互动关系及变异方式。     

变频器在切削力测量实验中的应用

切削力是金属切削中的重要参数之一,与切削速度呈驼峰曲线关系。为了使车削中的切削速度不受工件直径变化的影响而得到清晰完整的驼峰曲线,采用变频器对机床主电机进行无级调速,从而使主轴转速由主电机工作频率和调速手柄共同决定。实验结果表明无级调速可得到较理想的驼峰曲线。     

Development of integrated precision vibration-assisted micro-engraving system

A novel precision vibration-assisted micro-engraving system was developed by the integration of fast tool servo and ultrasonic elliptical vibration system, in which the flexure hinge was designed to avoid backlash and PID control algorithm was established to guarantee specific precision. Apart from experimental validation of the performance of the system, various micro-V-grooves cutting experiments on aluminum alloy, ferrous material and hard cutting material were performed, in which Kistler force sensor was used to measure cutting force. Through experiments, it was clear that the vibration-assisted micro-engraving system can ensure good quality of micro-V-grooves and reduce cutting force by about 60% compared with traditional removal process without ultrasonic vibration.     

Scratching and Turning Experiments on Machinability of Optical Glass SF6 in Diamond Cutting Process

To improve the machinability of optical glass and achieve optical parts with satisfied surface quality and dimensional accuracy, scratching experiments with increasing cutting depth were conducted on glass SF6 to evaluate the influence of cutting fluid properties on the machinability of glass. The sodium carbonate solution of 10.5% concentration was chosen as cutting fluid. Then the critical depths in scratching experiments with and without cutting fluid were examined. Based on this, turning experiments were carried out, and the surface quality of SF6 was assessed. Compared with the process of dry cutting, the main indexes of surface roughness decrease by over 70% totally. Experimental results indicated that the machinability of glass SF6 can be improved by using the sodium carbonate solution as cutting fluid.     

方东美论道家艺术精神

"诗哲"方东美极为重视道家的艺术精神。他以形象的比喻"太空"来描述道家妙不可言的胜境,此真理、真实之"太空"胜境,为道家艺术精神的指向。超越、解放与"坐飞机"升迁等,为道家艺术精神获取的途径。道家艺术精神运转无穷,像"同心圆"扩散一样,产生广泛的影响。     

基于ANSYS的平面应力分析

利用ANSYS软件中的平面应力静力分析功能,采用ANSYS的APDL语言完成了平面应力的内力分析计算.其方法可用于解决其他类型平面应力问题.     

帷幕截流防治水工程研究

奥陶系灰岩水通过导水裂隙涌入矿井,造成安全隐患。采用帷幕截流进行防治水主要针对导水断层的赋存和特征,以及导水优势面进行注浆,阻断水的流通,是帷幕截流防治水的关键;通过断层性质、导水断层的优势面以及导水因素分析,提出了帷幕截留控制主要涌水通道的方法,成功解决了岩层水的涌入。     

薄壁结构件的加工工艺

文章介绍了传统的薄壁结构件的加工方法及其缺陷,讨论了影响薄壁结构件加工精度的因素,提出了用高速切削加工典型薄壁结构件的方法,总结出当前机械制造业发展的方向是：努力发展数控切削技术,并向更高层次的自动化、柔性化、敏捷化、网络化和数字化制造方向推进。     

用平面波法计算光子晶体光纤

本文讨论了平面波法在光子晶体光纤中的应用,在光子晶体光纤的横截面内选取包含芯层的一个大晶格,形成一个假想的二维周期结构,用平面波将模式磁场展开．就可以求解任意横截面光纤中的麦克斯韦方程。     

线阵组合平面阵的指向性研究

利用Bridge乘积定理得到了线阵组合平面阵的指向性函数,并运用MATLAB软件绘制出该阵列的三维指向性图.借助于此图分析了线阵组合平面阵的指向性特点,以及声波的波长、阵列的尺寸对指向性的影响.该研究对线阵组合平面阵的设计提供了参考.