11 . box body structure : the double - decked engine case , in engine case entire seal , outside the engine case guards against exposes to the sun , may ventilate 11 .箱體結(jié)構(gòu):雙層機(jī)箱,內(nèi)機(jī)箱全密封,外機(jī)箱防曬可通風(fēng)。
( 3 ) using aga - fem to minimum the mass of an aeroengine case , the results indicate that the method we improved can be adopted to optimization of engine case and other engineering components ( 3 )將本文方法應(yīng)用于某航空發(fā)動機(jī)機(jī)匣簡化結(jié)構(gòu)的優(yōu)化分析。分析表明,本文發(fā)展的方法對于機(jī)匣等工程構(gòu)件有較好的適應(yīng)能力。
3 , analyzing the stress field of the aero - engine case under the given loads , the fatigue life of the case is predicted through the presented fatigue model and the method of " nominal stress " 用該模型對孔徑為5mm層合板的s ? n曲線進(jìn)行疲勞壽命預(yù)測及試驗(yàn)驗(yàn)證。 3 、首次對某型發(fā)動機(jī)t300 kh - 304復(fù)合材料機(jī)匣的主鋪層在給定工況下的疲勞壽命進(jìn)行預(yù)測。
Abstract : in this paper , the microcomputer was introdused to the leak check of internal combustion engine case . based on the analysis of checking principle , the technical plan for the software and hardware of microcomputer checking system was discussed , the function equation of pid control was derived 文摘:研究了微型計(jì)算機(jī)在內(nèi)燃機(jī)機(jī)體泄漏檢測中的應(yīng)用,在分析檢測原理的基礎(chǔ)上,討論了微型計(jì)算機(jī)檢測系統(tǒng)的軟硬件技術(shù)方案,并推導(dǎo)了pid控制的表達(dá)式。