this, you'll have no horizontal force at the roller, but you will have it at the pinned support. If you wouldn't, then the structure will be displaced.
Usually, in 2 dimensional structures, if you want to know if an articulated structure is isostatic (as opposed to hyperstatic, which is what you have right now) is to use the following formula:
b+c-2·n=0;
b being the number of bars, c the number of constraints you have and n the number of nodes. In your case: b=19, c=3 (displacements constrained in X, Z at your pinned support and only constrained in Z at your roller support) and n=11, so: 19+3-2·11=0.
I recommend you to download the app SW Truss, as it's very useful to check your results instantly.…
ep is to understan the logics of what you want to do, in your case, build 4 point surfaces (u also need to know the right direction to build the surfaces). Then you can write an hipotetic list (by hand in a paper) of what you want. In your case the list was (0, 1, 3, 2) (2, 3, 5, 4) (4, 5, 7, 6), etc... if you can imagine building 2 lists, each one with the sequences (0, 2, 4, 6, etcc) and (1, 3, 5, 7, etc..) then you can manage with shift and graft to finally have four lists. A( 0 1 2 3 ...) B (1 3 5 etc..) C(3 5 7 etc..) D (2 4 6 etc..). And to achieve the 2 first lists, you need to get the odd and the pair numbers. The cull pattern does that amazingy well. With a pattern True-False you get de pair numbers, and with the False-True pattern you get de odd numbers.
Hope it was clear enough…
Added by Pep Tornabell at 5:32am on November 19, 2009
r surfaces by EP results' components.
Having set a period from 9:00 to 19:00 for a single day (10th december), and using a slider from 0 to 10 (11 values, 0 is 9:00), the following mismatch occurs:
setting value 0 works for surface temperature but not for mean radiant temperature (warning says "stepofSimulation is outside the bounds of the comfResultMTX", but I do have 11 values from radiant temp matrix).
setting value 1 is rendered as "hour 2 of simulation" for surface temperature (FIG 1) and as "9:00" of radiant temperature (FIG 2).
It seems there is a slide of 1 hour. How should I interpret this?
Kind regards,
artemátyika…
Added by artemátyika at 3:34pm on February 2, 2019
ta.
Take the following example.
I have two curves referenced with a Crv Param this creates a single path with 2 items {0}(N=2).
If I divide these Curves by 10 segments I end up with 2 Paths of 11 points each {0;0}(N=11) and {0;1}(N=11)
If I want each point to be handled separately I can Graft a branch to hold each point. So I get 22 Paths looking like {0;0;0}(N=1), {0;0;1}(N=1).....{0;1;10}(N=1).
Each path is therefore the address of a particular item or items of interest.
The Param Viewer can be found Params>Special>Param Viewer and can be viewed either as a list of Paths or graphically by a double click.
Also note that the Fancy Wires display the structure of a stream of data. Single wire = Single Data Item, Double Wire = Multiple Data on single Path and Double Dashed Wire = Multiple/Single Data on Multiple Paths…