为解决大粗糙度的气缸套实现内孔直径自动化测量这一问题,基于电涡流传感器进行了测量方案的设计,并针对机械结构建立了测量过程的数学模型,得到了由机械结构引起的理论误差公式;通过MATLAB绘制出机械误差的三维曲面图,并得到了机械误差小于0.01 mm时各相关变量的取值范围;通过试验验证了自动测量机与内径百分表之间的测量误差,最小值和最大值误差均处于±0.015 mm内,平均值误差处于±0.01 mm内.该气缸套的内孔直径公差为±0.075 mm,结果表明,自动测量机满足现场使用要求.

Taking the high⁃voltage disconnector of the GW46 type as research object, this research first use Solidworks to build its three-dimensional simplified model, then use ABAQUS to simulate the mechanical characteristics of the disconnector over a wide temperature range, analyzing the influence of the clamping force between the dynamic and static contacts on temperature, the contact pressure between the dynamic and static contacts of the high⁃voltage disconnector of the GW46 type increases with the ambient temperature, and the contact pressure becomes smaller. Compared simulation results with experimental data, the error is less than 5%. Analysis shows that using the ABAQUS to simulation analysis of temperature rise of the high⁃voltage disconnector of the GW46 type, it can be determined that the contact pressure between the dynamic and static contacts changes with temperature. It avoids the complexity of the traditional theoretical calculation of query parameters and tedious calculations, and provides strong reference evidence for improving the reliability of the high⁃voltage disconnector of the GW46 type.

通过对连续墙抓斗工况的细致分析,得出其在各个工况下的受力变化情况;并通过ANSYS分析软件对其进行整体的建模和分析,得到了抓斗的危险区域即"热点";以此为根据对危险区域进行了网格的细化,得出了连续墙抓斗在各个工况下的瞬态响应图,从而进一步确定了应力集中的位置.在此基础之上,运用应力法对连续墙抓斗的寿命进行了评估,得出了该连续墙抓斗的理论寿命,为连续墙抓斗在工程上的可靠性提供了理论参考.