A Direct Derivation of the Equations of Motion for 3D-Flexible Mechanical Systems

Niels Leergaard Pedersen, Mads Leergaard Pedersen

    Research output: Contribution to journalJournal articleResearchpeer-review

    Abstract

    Equations of motion for rigid bodies with the body-fixed co-ordinate system placed at or away from the centre of mass are derived in a clear and direct way by making use of the two basic equations of mechanics (Newton's second law and the corresponding law of angular momentum). The dynamic equations for flexible mechanical systems are derived using the principle of virtual work, which introduces inertia in a straightforward manner, because this principle treats inertia as a force. The flexible formulation is exemplified by the use of circular beam elements and some basic matrices are derived in a direct way using skew-symmetric matrices. The capabilities of the formulation are demonstrated through examples. Results are compared with and verified by examples from the literature. Derivations throughout the paper are simplified by means of skew-symmetric matrices. (C) 1998 John Wiley & Sons, Ltd.
    Original languageEnglish
    JournalInternational Journal for Numerical Methods in Engineering
    Volume41
    Issue number4
    Pages (from-to)697-719
    ISSN0029-5981
    DOIs
    Publication statusPublished - 28 Feb 1998

    Fingerprint Dive into the research topics of 'A Direct Derivation of the Equations of Motion for 3D-Flexible Mechanical Systems'. Together they form a unique fingerprint.

    Cite this