sketchucation logo sketchucation
    • Login
    ℹ️ Licensed Extensions | FredoBatch, ElevationProfile, FredoSketch, LayOps, MatSim and Pic2Shape will require license from Sept 1st More Info

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

    Scheduled Pinned Locked Moved Plugins
    29 Posts 18 Posters 32.5k Views 18 Watching
    Loading More Posts
    • Oldest to Newest
    • Newest to Oldest
    • Most Votes
    Reply
    • Reply as topic
    Log in to reply
    This topic has been deleted. Only users with topic management privileges can see it.
    • 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

        1 Reply Last reply Reply Quote 0
        • 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

          1 Reply Last reply Reply Quote 0
          • 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

            1 Reply Last reply Reply Quote 0
            • 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

              1 Reply Last reply Reply Quote 0
              • 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

                1 Reply Last reply Reply Quote 0
                • 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.

                  1 Reply Last reply Reply Quote 0
                  • 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/

                    1 Reply Last reply Reply Quote 0
                    • 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

                      1 Reply Last reply Reply Quote 0
                      • 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

                        1 Reply Last reply Reply Quote 0
                        • 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.

                          1 Reply Last reply Reply Quote 0
                          • 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

                            1 Reply Last reply Reply Quote 0
                            • M Offline
                              markitekt
                              last edited by

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

                              1 Reply Last reply Reply Quote 0
                              • 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.

                                1 Reply Last reply Reply Quote 0
                                • N Offline
                                  neo83_gr
                                  last edited by

                                  _

                                  1 Reply Last reply Reply Quote 0
                                  • 1
                                  • 2
                                  • 2 / 2
                                  • First post
                                    Last post
                                  Buy SketchPlus
                                  Buy SUbD
                                  Buy WrapR
                                  Buy eBook
                                  Buy Modelur
                                  Buy Vertex Tools
                                  Buy SketchCuisine
                                  Buy FormFonts

                                  Advertisement