At present carbon fiber - reinforced composite is developed to use in some aero - engine components in our country . using the numerical method and fatigue damage theory , the buckling and fatigue on the composite materials and composites case are studied for aero - engine design 本文从实际工程背景出发,利用板壳理论和现代数值分析技术的研究成果,结合疲劳累积损伤理论,对航空发动机用的复合材料及其机匣结构的屈曲与疲劳寿命问题开展了较为系统深入的研究。
But there are not very effective solution means that satisfy the rigorous requirement of vibration , noise etc . on the experimental base , the paper applys dynamic design theory and makes a creative exploration to engine design method , and makes a dynamic stiff and strength analysis to remedy the insufficiency of static design 本文针对上述问题在试验的基础上,应用动态设计理论对发动机的设计方法进行了创造性的探索。通过对发动机的主要零部件的动态刚、强度的研究和分析以弥补静态设计的不足。
With the development of computer technology and the advancement of numerical calculation , computational fluid dynamics ( cfd ) has been applied widely in simulating engine ' s chemical non - equilibrium flowfields and has emerged as an extrem ely valuable and cost - effective engineering tool in engine design and flowfield analysis 随着计算机技术的发展和数值计算方法的进步,计算流体力学( cfd )在发动机的燃烧化学非平衡流场的数值计算研究方面得到了广泛的应用,并逐渐成为发动机设计和流动分析的一种经济、有效的手段。
The measurement system is based on pci bus and designed to integral measure the engine ’ s parameters such as pressure , engine rotate speed , air flux , etc . the system is very important in evaluatiang 、 ameliorating and repairing airplane engine because it provides relevant exam data for the airplane engine design 该测试系统基于pci总线,对发动机的脉动压力、转速摆动、燃油流量等参数进行综合测试,为航空发动机的研制提供相应的试验依据,对发动机的性能评估、技术改造、故障维修等具有十分重要的意义。
After the comparing and analysing , obviously the simulatied calculation value is as much close as the test result . this means the simulated program has met the requirements of rta521 type engine design and basis foundation , and also can be used as validated program for rta52u type diesel engine work process and design parameters chosen 通过比较和分析,所得的仿真模拟计算值同实际试验所得的结果非常接近,这说明该仿真程序已基本满足了该rta52u机型的设计思路和基本出发点,可以用作rta52u型机工作过程及设计参数的验证。