The invention provides a method for simulating a full-size fatigue test result by adopting a quasi-full-size test piece, and the method comprises the steps: 1, carrying out the fatigue strength analysis of a full-size structure, and obtaining a key fatigue weak part of the full-size structure; 2, determining a structural form and a cross section size of the test piece of the key fatigue weak part according to a load transfer route, a boundary condition, stress and a stress concentration coefficient of the full-size structure; 3, according to the loading and fixing requirements of the key fatigue weak part simulation test piece, constructing a key fatigue weak part test clamp; 4, according to the key fatigue weak part load obtained through calculation under the static strength design load condition, converting the fatigue load spectrum of the full-size structure, and determining a key fatigue weak part load spectrum; 5, selecting test equipment according to the load transfer route and the boundary conditions, and determining a supporting and loading method of the test piece; and 6, comparing and analyzing the results of the quasi-full-size test and the full-size test to obtain a quasi-full-size test evaluation result.
本申请提供了一种采用准全尺寸试验件模拟全尺寸疲劳试验结果的方法,包括:第一,对全尺寸结构进行疲劳强度分析,得到全尺寸结构的关键疲劳薄弱部位;第二,根据全尺寸结构的传载路线、边界条件、应力及应力集中系数确定关键疲劳薄弱部位试验件的结构形式及截面尺寸;第三,依据关键疲劳薄弱部位模拟试验件的加载和固定要求,构建关键疲劳薄弱部位试验夹具;第四,按照静强度设计载荷情况下计算得到的关键疲劳薄弱部位载荷,将全尺寸结构的疲劳载荷谱进行折算,确定关键疲劳薄弱部位载荷谱;第五,依据传载路线和边界条件,选取试验设备,确定试件的支持及加载方法;第六,通过准全尺寸试验与全尺寸试验的结果对比分析得到准全尺寸试验评定结果。
Method for simulating full-size fatigue test result by adopting quasi full-size test piece
一种采用准全尺寸试验件模拟全尺寸疲劳试验结果的方法
2021-09-24
Patent
Elektronische Ressource
Chinesisch
IPC: | G01N Untersuchen oder Analysieren von Stoffen durch Bestimmen ihrer chemischen oder physikalischen Eigenschaften , INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES / B64F GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLY ADAPTED FOR USE IN CONNECTION WITH AIRCRAFT , Boden- oder Flugzeugträgerdeckeinrichtungen besonders ausgebildet für die Verwendung in Verbindung mit Luftfahrzeugen / G01M TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES , Prüfen der statischen oder dynamischen Massenverteilung rotierender Teile von Maschinen oder Konstruktionen |
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