A shock absorbing member which can increase impact absorption energy and also enables thinning of a steel sheet that is a starting material, a method for producing the shock absorbing member, and a method for producing a steel sheet for cold plastic working are provided. The shock absorbing member includes a ridge portion formed in a curved shape as viewed from a longitudinal direction, and a wall portion extending from the ridge portion. In the wall portion, a ratio σ5/τ5 between a tensile stress σ5 when an elongation in a tensile test is 5% and a shear stress τ5 when a shear strain in a shear test is 5√3% is 1.70 or less, or a ratio σ10/τ10 between a tensile stress σ10 when an elongation in a tensile test is 10% and a shear stress τ10 when a shear strain in a shear test is 10√3% is 1.70 or less.


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    Title :

    Shock absorbing member, method for producing shock absorbing member, and method for producing steel sheet for cold plastic working


    Contributors:

    Publication date :

    2024-08-20


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B62D MOTOR VEHICLES , Motorfahrzeuge / B21D WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL , Bearbeiten oder Verarbeiten von Blechen, Metallrohren, -stangen oder -profilen ohne wesentliches Abtragen des Werkstoffs / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / C21D Veränderung der physikalischen Struktur von Eisenmetallen , MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS / C22C Legierungen , ALLOYS / F16F SPRINGS , Federn



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    NAGANO MAI / YONEMURA SHIGERU / UENISHI AKIHIRO | European Patent Office | 2022

    Free access

    SHOCK ABSORBING MEMBER, METHOD OF MANUFACTURING SHOCK ABSORBING MEMBER, AND METHOD OF MANUFACTURING STEEL PLATE FOR COLD PLASTIC WORKING

    NAGANO MAI / YONEMURA SHIGERU / UENISHI AKIHIRO | European Patent Office | 2022

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    Free access