异型曲面墙板的施工难点及解决方法

新机场指挥中心墙面为正反弧连续曲面和椭圆型曲面,由于其造型复杂、空间较大且位于半空,墙面的装饰铝复合板具有一定的加工难度和施工难度。本工程通过现场实测、CAD模型重建、异型弧面拆分,弥补了主体结构和二次结构的施工偏差,实现异型曲面墙板的精确定位和安装,并保证了正反弧交界处墙面装饰板拼缝的平滑度,希望给类似的工程提供借鉴。

A Class of the Singularly Perturbed Boundary Value Problems for Elliptic Equation with a Super Surface of Turning Point in n-dimensional Space

In this paper, we study a class singular perturbed elliptic equation boundary value problem with a super surface of turning point in n-dimensional space by using the method of multiple scales and the comparison theorem. The uniformly valid asymptotic approxmations of solutions for the boundary value problem is constructed.

工程上常用回转体的研究

研究了工程上常用的回转体,给出了判别回转体的方法;明确了回转体正截面的交线为一组相互平行的圆;沿主轴方向对称的椭圆型二次曲面体的截交线为两组圆。