男装廓型设计的特征性研究

廓型设计是男装设计的第一设计要素,现通过对男装廓型设计所体现出的空间特征、结构特征、时代风貌特征、流行特征、品牌风格特征的研究分析,为企业品牌设计师树立正确的廓型设计概念以及建立全面的品牌廓型设计观提供参考。

钢轨非对称廓型的设计方法

为科学确定钢轨非对称廓型,指导打磨作业,基于经典的轮轨接触几何学和接触力学,建立了以等效锥度、接触应力水平和打磨量等为评判依据的设计与评价方法,以比选确定最优打磨方案.实例分析表明,这种方法综合考虑了不同打磨方案对曲线通过性能、滚动接触疲劳和打磨成本等关键因素的影响,可以为目标廓型的选择提供参考.

铁路曲线钢轨非对称廓形铣磨方法的研究

针对铁路曲线钢轨非正常磨损和病害,分析了曲线地段钢轨磨耗几何特征和规律,通过采用以增大下股钢轨轨底坡为主的非对称铣磨,能增大滚动圆半径差,增加蠕滑力矩,改善轮轨关系,减小轮轨接触应力。实践证明,这种方法对科学确定钢轨非对称廓型,改善曲线通过性能,提高列车运行品质,减缓钢轨病害的形成作用明显,为曲线地段钢轨的非对称铣磨提供了可借鉴的方法。.

《羽.光》

设计说明:此系列以白色为主色调,以解构设计为主,加入金属元素作为点缀,本系列采用新型的服装材料——水波纹液态水晶面料,强光下呈现水晶般的高光反射,在冬日阳光下闪闪发光,让温暖与腔调并存,大廓型设计打破了羽绒服的呆板和臃肿,还原随性洒脱,刚柔并济,真实自我。

Improving cam profile design optimization based on classical splines and dynamic model

Cam profiles play an important part in the performance of cam mechanisms. Syntheses of cam profile designs and dynamics of cam designs are studied at first. Then, a cam profile design optimization model based on the six order classical spline and single DOF(degree of freedom) dynamic model of single-dwell cam mechanisms is developed. And dynamic constraints such as jumps and vibrations of followers are considered. This optimization model, with many advantages such as universalities of applications, conveniences to operations and good performances in improving kinematic and dynamic properties of cam mechanisms, is good except for the discontinuity of jerks at the end knots of cam profiles which will cause vibrations of cam systems. However, the optimization is improved by combining the six order classical spline with general polynomial spline which is the so-called "trade-offs". Finally, improved optimization is proven to have a better performance in designing cam profiles.