길이 방향으로 담금질부, 모재 경도부 및 천이부를 포함하는 경도 분포(강도 분포)를 갖는 자동차 차체용 구조 부재에 충격 하중의 부하에 의한 굽힘 변형이 발생하는 경우에 있어서의 변형부를 모재 경도부로 하여, 담금질부에서의 소성 변형의 집중을 회피한다. 중공 또한 직사각형 단면의 강제 본체를 갖는 자동차 차체용 구조 부재이다. 본체는, 축방향의 적어도 일부에, 담금질부와, 천이부와, 모재 경도부를 축방향으로 이 순서대로 구비한다. 축방향에 관한 천이부의 길이 (L)이 본체의 단면적을 (A), 단면 2차 모멘트를 (I)로 한 경우에, 0.006[mm]

    A deformed part in a case in which the application of a collision load causes bending deformation in a structural member for an automobile body having a hardness distribution (strength distribution) composed of a quenched part, a base metal hardness part, and a transition part in a longitudinal direction is used as the base metal hardness part to avoid plastic strain concentration in the quenched part. This structural member for an automobile body has a hollow steel main body having a rectangular cross section. The main body includes a quenched part, a base metal hardness part, and a transition part in this order, in at least a part thereof in an axial direction. The length (L) of the transition part as related to the axial direction satisfies the relationship of 0.006 (mm -1 ) < LA/I ¤ 0.2 (mm -1 ) in a case in which the cross-sectional area of the main body is (A) and the moment of inertia of area is (I).


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    Titel :

    STRUCTURAL MEMBER FOR AUTOMOBILE BODY


    Weitere Titelangaben:

    자동차 차체용 구조 부재


    Beteiligte:
    YOSHIDA MICHITAKA (Autor:in) / TOMIZAWA ATSUSHI (Autor:in) / UEMATSU KAZUO (Autor:in)

    Erscheinungsdatum :

    20.02.2017


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Koreanisch


    Klassifikation :

    IPC:    B62D MOTOR VEHICLES , Motorfahrzeuge



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