Lack of dynamic mode

C

cengizhan1025

New Member
Hello, I am designing in idecad 8.63 steel program. I want to ask a few questions. I encountered some errors. No matter what I did in my project, I couldn't fix the insufficient number of mods included in the dynamic account. how can i fix this? I also got an error with alpha values less than 0.7, but its ductility was normal and it passed when I set the R coefficients to 5. When the R coefficients of high ductility are taken as 8, it gives an alpha value error. Can I do this project with high ductility? Finally, I am getting an error in the end combination of my roof braces as a result of the analysis from the Optional reports. It turns out a very high value. So where am I doing wrong? Thank you very much in advance if you can help me with these questions. My project file :
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UNNAME_PROJE.ide85.html
 
Re: DYNAMIC MOD FAILURE Hello, The file in the link you sent cannot be downloaded. You can send your project as a wetransfer link.
 
Re: DYNAMIC MOD DEFICIENCY Hello, In the project, enter Modal Analysis settings in the structure tree and here you can select the Ritz method as the method and set the targeted mode number to 54. If you are going to solve your structure as high ductile, you need to provide high ductility conditions for steel elements. When you solve the structure highly ductile, your columns should be stronger than the beams. You are getting an alpha value error because this is not provided in your project. You can solve your project by providing high ductile conditions, or you can solve it as normal ductile. Infinite values appearing in crosstabs in the program is a bug related to program reporting. Calculations of cross-end joints located at the intersection of two cross members are not made by the program. However, these appear as errors in the reports. You can ignore the errors here. Instead of a summary connection report in the optional report, you can get a detailed design report by entering the joint design reports in your project in the Join properties and clicking the Design Report button.
 
Re: DYNAMIC MODE FAILURE Got it, thanks. Well, I entered many modal analyzes, how can I delete them? So I'm going to make one, and that's the one you said.
 
Re: DYNAMIC MOD INSUFFICIENCY Hello, you can delete the mods you defined from the building tree with the right mouse button and delete them from the pop-up menu.
 
Re: DYNAMIC MODE INSUFFICIENCY I understand, Mr. İbrahim, but although I define 54 modes and ritz vectors in modal analysis, he still calculates over 18 modes. what could be the reason for this?
 
Re: DYNAMIC MODE DEFICIENCY by the way, I'm sorry I gave you a headache. However, ibrahim does not enter the design reports of the combinations that cause cross-end joint errors. an absurd number appears in the optional report and when I enter the design report from the composition properties, it does not open.
 
Hello, Modal analysis does not continue when the mass participation rate exceeds 90%. This number may not reach 54. Not all combinations are designed in the program. If both crosses join in one cross-end joint, the program does not design this joint.
 
I understand, I will make a combination according to him. well, does this problem exist in the new version as well, ibrahim bey? In the modal analysis, when I did the dynamic degrees of freedom in all directions, I had no problem.
 
Hello there; Additional work is required for the case with junction design, this work is next on the worklist. Good work.
 
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