Three-way simulation
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When simulating tees, does it mean that for each tee point, a tee type such as 10-20, 20-30, 20-40 needs to be selected? Is it necessary to define a tee at the 20 node for each element? The technical reference manual seems to require this, but I’ve seen some cases where only one node is defined. What do others do in such situations?
It’s not necessary to add them all. As long as 1 is added, the stress at this point naturally gets multiplied by the coefficient. As in your example, if 20 points is specified as the tee point on the input interface of any node, then when calculating the primary and secondary stresses, the stress value at 20 points within the ranges 10-20, 20-30, and 20-40 will all be multiplied by the coefficient for the tee.
But I read in the technical manual that the stress enhancement factor only applies to the defined tee ends
It only needs to be defined once to define the tee intersection. The stress enhancement factor, CII, is calculated automatically.