SLOC

SLOC, ref_nr, body_nr*, layer_nr, flag, x/p_start, y/p_cent, span_ang;

Defines the location of a connecting point for suspension springs (SLOC)

• The SLOC command defines “spring connecting points” and “auxiliary points” for spring elements.
• “Spring connecting points” are placed at the starting and ending point of straight, circular and Bezier springs (see SPRI command). Several springs can share the same connecting point when three or more springs intersect at the same point (e.g. T- or X-junctions). A connecting point is also necessary if springs suddenly change their width.
• “Auxiliary points” define the center points of circular springs and control points of Bezier springs. Several circular or Bezier springs can share the same auxiliary point. Auxiliary points may not be used to define starting and ending points of springs. However, “spring connecting points” and “auxiliary points” can have the same location if springs should start or end at center points or Bezier control points.
• “Spring connecting points” are defined by the flag parameter new (or empty) and “auxiliary points” by the flag parameter aux. It follows the x- and y-coordinates for the SLOC locations.
• For circular springs, the distances between starting and center point (radius 1) must be the same as the distance between ending point and center point (radius 2). Hence, the ending point location is related to the starting and center point coordinates and the span angle in between. To guarantee the same radii, the ending point of circular springs is defined by the flag parameter rel (related point). It follows the SLOC numbers of the starting point p_start, the center point p_cent and the span angle span_ang. The ending point position is then calculated automatically.
• Both, starting and center point SLOCs must be defined prior to assigning related points for circular springs. Positive span angles calculate end point positions counter clockwise and negative values clockwise.
• Avoid a direct connection of two ending points which come from different circular springs. The second spring chain will overwrite the data from the first one and non-consistent models can appear.
• For some applications such as closed loop spring designs, the related ending point of the last circular spring becomes the same coordinate as the first starting point of the loop. In this very special case, the SLOC must be defined twice with the same reference number. At the begin of the loop, a starting point is defined with the flag parameter new. Then follow four related SLOCs with 90° span angle. The last SLOC becomes the same position as the first SLOC of the loop. In order to avoid warnings, the last SLOC must be defined with the flag parameter dup (duplicated point). An example is shown in the figure below.
• The body_nr* parameter is automatically determined in the current release. Leave the parameter blank.

Input Data⚓︎