The importance of using database and computer aided analysis technology in the examination of processing aircraft sheet metal parts was put forward by analyzing the actuality of technology design for aircraft sheet metal parts 摘要通过分析当前我国飞机板金零件工艺性审查的现状,提出了在工艺性审查中利用数据库及计算机辅助技术的必要性。
The thesis had done the theories analysis in detail and built the relevant mathematics models aiming at the mechanics characteristic about the lodging of stalk , the elastic and plastic deform of stalk under the action of the transverse loads , the mechanics condition which causes stalk pushed , the relation between the speed of unit and the surface radius of ski , the relevant location between the thickness of the compressed stalk and action location of load , the relevant location between the mating device and plough , the coefficient of overturning soil under the thickness of the compressed stalk and so on . in addition , the computer aided analysis and simulating experiments in field were acted by choice 本文对秸秆自倒伏力学特性;横向载荷作用下的茎秆弹塑性变形与秸秆被推倒的力学条件;机组作业速度与滑撬曲面半径的关系;秸秆压实厚度与加载作用点的相对位置;配套装置与犁体相对位置;秸秆压实厚度下的翻垡系数等,进行了较详细的理论分析并建立了相关数学模型。在此基础上,本项研究还选择性地进行了计算机辅助分析和田间模拟试验。
Based on the research project " spc - 33 digital governor computer aided analysis system " , this paper realizes the digital governor , which has been fixed in newly built vessels in our country fault analysis and diagnosis with computer and simulates the spc - 33 digital governor control panel and speed control system by adopted the fta analysis theory and computer based simulation 本文结合中远集团科研项目《 spc - 33电子调速器计算机辅助分析系统》 ,对我国近几年在新建船舶中采用的spc - 33电子调速器,运用fta故障树分析理论及计算机仿真,实现电子调速器故障计算机分析和诊断,并对调速器操作面板和转速控制系统进行仿真。