燃气涡轮试验与研究
燃氣渦輪試驗與研究
연기와륜시험여연구
GAS TURBINE EXPERIMENT AND RESEARCH
2015年
1期
17-20
,共4页
洪宇%常宇博%肖双强%廖华琳
洪宇%常宇博%肖雙彊%廖華琳
홍우%상우박%초쌍강%료화림
航空发动机%机匣%骨架加强结构%刚度%回归分析%数值试验
航空髮動機%機匣%骨架加彊結構%剛度%迴歸分析%數值試驗
항공발동궤%궤갑%골가가강결구%강도%회귀분석%수치시험
aero-engine%case%skeleton ribs%stiffness%regression analysis%numerical experiment
对带三角形骨架加强结构的航空发动机机匣的主要结构参数进行分析，以机匣质量和刚度作为目标函数，建立了研究的变量和约束条件，并采用相似准则将其无量纲化。采用均匀试验设计方法生成样本建立试验组，并设立传统板壳机匣作为对比组，分别开展有限元数值试验。运用逐步回归法分析试验结果，形成了表征机匣刚度和质量的拟合公式，比较了该类机匣与传统板壳机匣的刚度特性，给出了各主要结构参数对机匣刚度的影响规律。
對帶三角形骨架加彊結構的航空髮動機機匣的主要結構參數進行分析，以機匣質量和剛度作為目標函數，建立瞭研究的變量和約束條件，併採用相似準則將其無量綱化。採用均勻試驗設計方法生成樣本建立試驗組，併設立傳統闆殼機匣作為對比組，分彆開展有限元數值試驗。運用逐步迴歸法分析試驗結果，形成瞭錶徵機匣剛度和質量的擬閤公式，比較瞭該類機匣與傳統闆殼機匣的剛度特性，給齣瞭各主要結構參數對機匣剛度的影響規律。
대대삼각형골가가강결구적항공발동궤궤갑적주요결구삼수진행분석，이궤갑질량화강도작위목표함수，건립료연구적변량화약속조건，병채용상사준칙장기무량강화。채용균균시험설계방법생성양본건립시험조，병설립전통판각궤갑작위대비조，분별개전유한원수치시험。운용축보회귀법분석시험결과，형성료표정궤갑강도화질량적의합공식，비교료해류궤갑여전통판각궤갑적강도특성，급출료각주요결구삼수대궤갑강도적영향규률。
The major structural parameters of aero-engine case with triangle skeleton ribs are analyzed. Taking the case mass and stiffness as objective functions, the variables and constraint conditions have been established, and made them dimensionless by using the similar criteria. The test group was built with de?signing samples from uniform design experiments. Taking the traditional plate shell case as the comparison group, the FEM numerical experiments are carried out for the two groups. The experimental results are ana?lyzed using the stepwise regression method, and the fitting formula to represent the mass and stiffness of case is gained. The comparison for the stiffness characteristics between the case with triangle skeleton ribs and the traditional plate shell case is made, and the influence of each structural parameter on the case stiff?ness is given.
