Hello,
I would need some help on this model please. I would like to define non linéar supports that would maintain the structure only in one direction (when the horizontal effort is is "compressing" the structure against the support) and would be null for the other way (when the horizontal effort is "pulling" the structure).
Herewith please find the model i'm talking about.
Gratefully,
Fouzi
Solved! Go to Solution.
Solved by Artur.Kosakowski. Go to Solution.
Solved by Artur.Kosakowski. Go to Solution.
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Thanks for your answer,
I tried it but it tells me that the calculation doesn't converge.
I've tried to put these supports in UX+ and UX-, it nerver converges.
For UX+ it is only for case 3 which is wind load. As it doesn't act alone the convergence of this load case is irrelevant as long as all defined combinations converge.
Case 1 : Poids propre pierre
Analysis type: Static - Nonlinear
Non-linear process: convergent.
Maximum value of process parameter when convergence is obtained : 1.000
Maximum value of process parameter when convergence is not obtained : 1.000
Case 2 : Vent en pression
Analysis type: Static - Nonlinear
Non-linear process: convergent.
Maximum value of process parameter when convergence is obtained : 1.000
Maximum value of process parameter when convergence is not obtained : 1.000
Case 3 : Vent en depression
Analysis type: Static - Nonlinear
Non-linear process: divergent.
Maximum value of process parameter when convergence is obtained : 0.975
Maximum value of process parameter when convergence is not obtained : 1.000
Case 4 : ELU 1 (1,35 PP)
Analysis type: Nonlin. Combination
Non-linear process: convergent.
Maximum value of process parameter when convergence is obtained : 1.000
Maximum value of process parameter when convergence is not obtained : 1.000
Case 5 : ELU 2 (1,35PP+1,5VP)
Analysis type: Nonlin. Combination
Non-linear process: convergent.
Maximum value of process parameter when convergence is obtained : 1.000
Maximum value of process parameter when convergence is not obtained : 1.000
Case 6 : ELU 3 (1,35PP+1,5VD)
Analysis type: Nonlin. Combination
Non-linear process: convergent.
Maximum value of process parameter when convergence is obtained : 1.000
Maximum value of process parameter when convergence is not obtained : 1.000
Case 7 : ELS (PP+VP)
Analysis type: Nonlin. Combination
Non-linear process: convergent.
Maximum value of process parameter when convergence is obtained : 1.000
Maximum value of process parameter when convergence is not obtained : 1.000
Case 8 : ELS 2 (PP+VD)
Analysis type: Nonlin. Combination
Non-linear process: convergent.
Maximum value of process parameter when convergence is obtained : 1.000
Maximum value of process parameter when convergence is not obtained : 1.000
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The results for case 3 (divergent are wrong) but the results for combinations (convergent) are correct but my assumption is that the reason you created the combinations is that you don't have case 3 acting on the structure alone. If yes, the fact it converges or not is not important as you need to have the results for the combinations only. In other words simple load cases could only be the treated as definitions of loads and not calculated at all.
To put it in yet another way: if you have unidirectional support that doesn't work if you pull it and then you actually pull it (case 3) you probably don't expect to have the convergence (right results), don't you?
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I see... Thank you for your answer!
How could I, please, set simple cases as definition loads so they aren't calculated?
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Still not working! 😞
I still have negativ supports where they should be null... 😞
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