The invention belongs to an aviation strength test technology, and relates to a clamp design for a large-opening fatigue test of an aircraft wing spar. The back-to-back combination of the two sections of spars is realized through the clamp, and the loading feasibility is ensured. The bending moment of the spar examination part in a test piece and the shear force of a beam web are kept consistent with the real load, the load is uniformly transmitted, the loading eccentricity is eliminated, and the transition section is prevented from being damaged in advance in the test.

    本发明属于航空强度试验技术,涉及对飞机机翼翼梁大开口疲劳试验的夹具设计。通过该夹具使得两段翼梁实现背靠背组合,保证加载的可实施性。本发明使试验件中翼梁考核部位的弯矩和梁腹板剪力与真实载荷保持一致,并且使得载荷传递均匀,消除加载偏心,防止过渡段在试验中提前破坏。


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    Title :

    Fatigue test clamp for large opening of spar


    Additional title:

    一种翼梁大开口疲劳试验夹具


    Contributors:
    ZHAO TIANJIAO (author) / ZHAI XINKANG (author) / LI XIAOPENG (author) / WANG FENG (author) / ZHANG YANJUN (author)

    Publication date :

    2021-05-14


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    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 / B25B TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING, OR HOLDING , Werkzeuge oder Werkbankvorrichtungen zum Befestigen, Verbinden, Lösen oder Halten, soweit nicht anderweitig vorgesehen / 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



    Aircraft spar fatigue test load spectrum design method

    ZHAO TIANJIAO / LEI XIAOXIN / ZHANG YANJUN et al. | European Patent Office | 2023

    Free access

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