Hallo Silvio.
Der entscheidende Punkt ist, dass Dein Koordinatensystem richtig liegt.
Anbei ein Auszug aus der Knowledge-Base (leider nur in Englisch verfügbar):
Variable Force:
Similarly, variable forces can be applied to edges and faces. A variable force is specified by force value and force distribution.
The force value is set equal to the summation of the absolute values of the forces applied to all nodes on the face or edge.
The distribution of the force is specified by a coordinate system, a second-order polynomial in the xy-plane of the desired coordinate system, and the associated coefficients of the 2nd order polynomial as shown below.
F (x, y) = (A + B*x + C*y + D*x*y + E*x2 + F*y2)
Where
F (x, y) = Relative magnitude of force applied at a point with coordinates x and y in the selected coordinate system.
x, y = Coordinates of the point relative to the selected coordinate system.
A, B, C, D, E, and F are polynomial coefficients.
To summarize it:
The value entered in the Value field is the value of the force actually applied (if the force doesn't reverse direction on geometric entity to which it is applied - else, the force value is set equal to the summation of the absolute values of the forces applied to all nodes on the face or edge).
The A, B, C, D, E, and F are polynomial coefficients are only used to define the relative distribution of the force. Multiplying all the coefficients by any arbitrary value will not change the distribution or the intensity of the force.
To define the variable load
Define a coordinate system (Insert, Reference Geometry, Coordinate System) in terms of which you can describe the pressure/force distribution. The coordinate system should be oriented such that the distribution on the target face varies with respect to the x and y coordinates only.
Select the desired geometric entities along with the coordinate system, and possibly a plane, which will be used to define the orientation of the load.
Right click on the Load/Restraint folder of the Simulation tree and select Pressure or Force.
Activate the Non uniform option. Fill-in the coefficient of the equation.
Roland
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Das Unmögliche möglich zu machen
ist ein Ding der Unmöglichkeit.
Andy Brehme - deutscher Fussballer
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