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    [plugin] Structural analysis - SketchStruct: 30 Oct 12: v201

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    • D Offline
      dejanfortuna
      last edited by

      Looks great keep up the good work.

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      • D Offline
        dejanfortuna
        last edited by

        Great tool, i hope you can finish what you have started.

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        • M Offline
          mddc
          last edited by

          it is so hard to make... congratulations!

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          • S Offline
            sherwood11
            last edited by

            Coool .. I'll check it out !

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            • G Offline
              glro
              last edited by

              @target2427 said:

              Changelog
              v2.0.1 - Added confirmation when choosing materials, now using .rbz install method

              Cheers

              don't know why: version 2.0.0 is downloaded following the link

              and when y try, the ruby box says

              Error: #<NoMethodError: undefined method []' for nil:NilClass> C:/PROGRA~2/Google/GOOGLE~3/Plugins/SketchStruct2.0.0/stiffness.rb:815:in member_load'
              C:/PROGRA~2/Google/GOOGLE~3/Plugins/SketchStruct2.0.0/stiffness.rb:813:in each' C:/PROGRA~2/Google/GOOGLE~3/Plugins/SketchStruct2.0.0/stiffness.rb:813:in member_load'
              C:/PROGRA~2/Google/GOOGLE~3/Plugins/SketchStruct2.0.0/stiffness.rb:858:in main' C:/PROGRA~2/Google/GOOGLE~3/Plugins/SketchStruct2.0.0/main.rb:98 C:/PROGRA~2/Google/GOOGLE~3/Plugins/SketchStruct2.0.0/stiffness.rb:815:in call'
              C:/PROGRA~2/Google/GOOGLE~3/Plugins/SketchStruct2.0.0/stiffness.rb:815

              no outputs are shown, only inputs

              apart from that, it is a nice idea, wish it comes through

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              • KrisidiousK Offline
                Krisidious
                last edited by

                oh yeah... I'll be watching this one. 😍

                By: Kristoff Rand
                Home DesignerUnique House Plans

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                • T Offline
                  target2427
                  last edited by

                  Sorry about this, I did upload the file but for some reason sourceforge did not pick it up as the latest version. I have manually overridden this now and the newest version should be available for download.

                  https://sourceforge.net/projects/sketchstruct/files/latest/download

                  @glro said:

                  @target2427 said:

                  Changelog
                  v2.0.1 - Added confirmation when choosing materials, now using .rbz install method

                  Cheers

                  don't know why: version 2.0.0 is downloaded following the link

                  and when y try, the ruby box says

                  Error: #<NoMethodError: undefined method []' for nil:NilClass> C:/PROGRA~2/Google/GOOGLE~3/Plugins/SketchStruct2.0.0/stiffness.rb:815:in member_load'
                  C:/PROGRA~2/Google/GOOGLE~3/Plugins/SketchStruct2.0.0/stiffness.rb:813:in each' C:/PROGRA~2/Google/GOOGLE~3/Plugins/SketchStruct2.0.0/stiffness.rb:813:in member_load'
                  C:/PROGRA~2/Google/GOOGLE~3/Plugins/SketchStruct2.0.0/stiffness.rb:858:in main' C:/PROGRA~2/Google/GOOGLE~3/Plugins/SketchStruct2.0.0/main.rb:98 C:/PROGRA~2/Google/GOOGLE~3/Plugins/SketchStruct2.0.0/stiffness.rb:815:in call'
                  C:/PROGRA~2/Google/GOOGLE~3/Plugins/SketchStruct2.0.0/stiffness.rb:815

                  no outputs are shown, only inputs

                  apart from that, it is a nice idea, wish it comes through

                  1 Reply Last reply Reply Quote 0
                  • G Offline
                    glro
                    last edited by

                    I tried again the link and yes, now it is the last version

                    I tried a few times and it worked as expected; sometimes it didn't though

                    once i got this error message:

                    "Error: #<NoMethodError: undefined method []' for nil:NilClass> C:/Archivos de programa/Google/Google SketchUp 8/Plugins/SketchStruct2/read.rb:231:in get_nodal_loads'
                    C:/Archivos de programa/Google/Google SketchUp 8/Plugins/SketchStruct2/read.rb:230:in each' C:/Archivos de programa/Google/Google SketchUp 8/Plugins/SketchStruct2/read.rb:230:in get_nodal_loads'
                    C:/Archivos de programa/Google/Google SketchUp 8/Plugins/SketchStruct2/read.rb:11:in initialize' C:/Archivos de programa/Google/Google SketchUp 8/Plugins/SketchStruct2/main.rb:66:in new'
                    C:/Archivos de programa/Google/Google SketchUp 8/Plugins/SketchStruct2/main.rb:66
                    C:/Archivos de programa/Google/Google SketchUp 8/Plugins/SketchStruct2/read.rb:231:in `call'
                    C:/Archivos de programa/Google/Google SketchUp 8/Plugins/SketchStruct2/read.rb:231"

                    With another example, the program gave a result, but in the ruby box, it wrote
                    "no. joints: 4
                    no. bars: 3
                    no. restraints: 4
                    DOF: 8
                    Maxwell's number: 1
                    Errror, mechanism forming
                    no. degrees of freedom: 8"

                    Obviously, there is still a lot of work to do to make it a usable tool, but i like very much having it in the sketchup environment


                    sketchup trial


                    second trial

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                    • T Offline
                      target2427
                      last edited by

                      Hi

                      Just a couple of questions about how you created the structure.

                      When I run your file I get the same error, however, when I redraw the structure, the program runs fine.

                      Did you first draw your structure with SketchStruct installed?

                      and

                      Did you draw the structure manually, line by line?

                      Thanks

                      Tom

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                      • G Offline
                        glro
                        last edited by

                        @target2427 said:

                        Did you first draw your structure with SketchStruct installed?

                        and

                        Did you draw the structure manually, line by line?

                        Yes to the first question

                        No to the second

                        I had it drawn automatically by another plugin i am working on, that makes a model of a scaffolding

                        From this model, i kept only the axis line and applied to it loads, supports, material and geometric values.

                        I didn't guess it would make a difference with a structure drawn from scratch


                        file 1

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                        • T Offline
                          target2427
                          last edited by

                          Ok, it looks like the two plugins are incompatible at the moment. SketchStruct uses a couple of minor functions for numbering the edges, this is done as the lines are drawn by the user.

                          This is a simple function which probably be included in your plugin to allow the two plugins to work together.

                          If you want more info on how the numbering works, I will be happy to help.

                          Tom

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                          • G Offline
                            glro
                            last edited by

                            @target2427 said:

                            Ok, it looks like the two plugins are incompatible at the moment. SketchStruct uses a couple of minor functions for numbering the edges, this is done as the lines are drawn by the user.

                            This is a simple function which probably be included in your plugin to allow the two plugins to work together.

                            If you want more info on how the numbering works, I will be happy to help.

                            Tom

                            The plugin i am working on doesn't use any numbering for edges; it is probably done automatically by sketchup

                            It seems to me that it would be an enhancement for your plugin to be able to number edges of an existing drawing; this way the user could store models and re-use them

                            Anyway, this is how usual structural analysis softwares work

                            Thank you for your answer

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                            • T Offline
                              target2427
                              last edited by

                              I did attempt to achieve this with the automatic Sketchup numbering, however, I had problems as Sketchup does not save these consistently. i.e. the IDs would change between sessions after saving and loading.

                              Hopefully I can find a way to achieve this with the sketchup numbering. I will try to look for a way to include this in the next version.

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                              • jarynzlesaJ Offline
                                jarynzlesa
                                last edited by

                                it seems to be a very nice and useful pluging, but I can not set supports and load. don't know why. 😢

                                http://www.vizualizaceschodiste.mypage.cz/

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                                • J Offline
                                  Jim
                                  last edited by

                                  Tom, this plugin is interfering with normal behavior of SketchUp[1].

                                  I had a quick look at some of the code and there's a lot to go over. In the meantime, I recommend users of this plugin disable it in the Extensions dialog when not in use.

                                  [1] http://sketchucation.com/forums/viewtopic.php?f=180&t=49507

                                  Hi

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                                  • T Offline
                                    target2427
                                    last edited by

                                    @jim said:

                                    Tom, this plugin is interfering with normal behavior of SketchUp[1].

                                    I had a quick look at some of the code and there's a lot to go over. In the meantime, I recommend users of this plugin disable it in the Extensions dialog when not in use.

                                    [1] http://sketchucation.com/forums/viewtopic.php?f=180&t=49507

                                    I am aware of this and will try to fix this for the next version. Sometimes errors pop up in the Ruby console when drawing lines indirectly (squares, arcs...).

                                    I apologise for the errors, but it is something being worked on

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                                    • irwanwrI Offline
                                      irwanwr
                                      last edited by

                                      This plugin should be awesome. And may become another very good reason to tell my brother to learn SketchUp and not just CAD 😄
                                      I hope all bugs could be fixed and works as it should be.

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                                      • T Offline
                                        target2427
                                        last edited by

                                        Hi all

                                        Just thought I should give you an update on the current progress. At the moment I am working on a Mesh analysis plugin (2d currently). The analysis itself is working fine, however when using very refined meshes (i.e. 100 elements), Sketchup pretty much crashes on my computer. To resolve this, I am also working on a Sparse Matrix library for Ruby. The idea of this is to reduce the time of calculations by only storing non-zero entities. On this, I have got matrix multiplication and addition working, however the more complex task of solving sets of simultaneous equations is not yet complete. I will not be releasing this plugin until I can get this working effectively.

                                        My next semester at uni is now starting, so progress may be slow on this.

                                        Cheers

                                        Tom

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                                        • M Offline
                                          markitekt
                                          last edited by

                                          Great Plugin. Any chance for English units in the future?

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                                          • T Offline
                                            target2427
                                            last edited by

                                            @markitekt said:

                                            Great Plugin. Any chance for English units in the future?

                                            I do plan to implement American Imperial units in the future, however it is not a high priority so may be a while before you see this. For now, you should be able to enter everything any units as long as they are consistent (ignoring the suggested units).

                                            For example, if you enter a beam 140" long, you could enter Youngs modulus, E as 29 (10^6) psi, as long as you enter your loads in pound force.

                                            Just remember to use consistent units everywhere.

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