连杆EHD计算报错，急求高手解决！

ganggang0330

$ Warning (Code 2250001)

        Connecting body BigEnd1:
       
        The maximum difference of radial coordinates after the first
        extrapolation is  0.18500E-02 ( 0.89443E-03 is the defined value for surface roughtness).
       
        User action: (a) Check the geometry of body Conrod1 and smoothen it,
                         if necessarry.
                     (b) Check the joint definition.


$ Warning (Code 2250003)

        Connecting body BigEnd1:
       
        The calculated maximum radial coordinate of body Crankshaft is greater
        than the calculated minimum radial coordinate of body Conrod1 after
        the first extrapolation.
        The difference is  0.10017E-02 ( 0.89443E-03 is the defined value for
        surface roughtness).
       
        User action: (a) Check the geometries of body Crankshaft and of body Conrod1 and
                         smoothen it, if necessarry.
                     (b) Check the joint definition.
                     (c) Define an initialisation phase using the command
                         SOLCTR ENDI ...
$ Warning (Code 1950011)

        The eccentricity (  93.053) of the computed reference node (2) is larger than 1% of
        the maximum eccentricity of all nodes (  131.06). The eccentricity calculation
        already considers an internal shift of the node geometry by (-0.28653E-02,-0.18811E-02,  61.232).
       
        Check the definition of the reference node.
$ Error (Code 871001)

        The iteration in this time step is diverging and a reduction of the
        time step size is not possible.
        The calculation must be stopped.
       
        User action: (1) Decrease the minimum (and maximum if necessary) time step size.
                     (2) Decrease the accuracy parameters for the calculation
                         to increase the stability of the solution procedure.
                         (I.e. decrease RESCTR EPSU ... EPSR ... EPSE ...)
                     (3) Check your calculation model.
                     (4) If this occurs near the calculation start,
                         check the initial conditions of your model.
                     (5) Check the Finte Element models of the bodies for
                         - small masses and moments of inertia
                           (esp. at reference points)
                         - small stiffness coefficients
                         - errors in the definitions of the degrees of freedom
                           (e.g. displacements in local coordinate systems)
计算刚开始几度就报错！！！我把步长已经设的很小了。还是报错。怎么回事？

DrLan

关于不收敛,教程上说了很多。有限元网格要准确，载荷单位不要搞错，各参数单位不要错。