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Homework Help: Exact modeling of coulomb stick-slip-friction using LCP

  1. Sep 11, 2013 #1

    I have a simple model. Say a 1DOF-Model like a box on a table pulled with a spring, which follows a given path. The friction between box (The position is y) and the table should be modeled with the coulomb-friction model. Like

    F_N\mu\geq F_T \rightarrow \dot{y}=0

    F_N\mu<F_T \rightarrow \dot{y}!=0

    The motion of equation would be something like:

    m \ddot{y}=F_{spring}(t)-F_{friction}


    2. Relevant equations

    I have to formulate it in a standard LCP form:

    w=M \cdot z+q



    w\cdot z=0
    in order to solve it with a LCP Solver. I have big difficulties to bring it in this form.

    Am I right in this forum?
    Last edited: Sep 11, 2013
  2. jcsd
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