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    Dynamic Instability of Straight Bars Subjected to Impulsive Axial Loads Using the DEM

    Letícia Fleck Fadel Miguel1, Leandro Fleck Fadel Miguel2, João Kaminski Jr.3

    CMES-Computer Modeling in Engineering & Sciences, Vol.104, No.2, pp. 87-104, 2015, DOI:10.3970/cmes.2015.104.086

    Abstract Since the half of the XX century, attention was given to the instability of structures under parametric excitation, especially under periodic loads. On the other hand, the instability of bars subjected to axial loads of impulsive type has been little studied, in spite of the practical importance of the topic. Thus, in Engineering Design it is frequently supposed, without tests or additional verifications, that an axial load of short duration can exceed the Euler critical load of the bar without inducing damage in the same.
    Within this context, this paper proposes the use of the truss-like Discrete Element Method… More >

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