All Discussions Tagged 'Structural' - Grasshopper2024-03-28T15:37:42Zhttps://www.grasshopper3d.com/group/geometrygym/forum/topic/listForTag?tag=Structural&feed=yes&xn_auth=noAutodesk Robot Structural Analysistag:www.grasshopper3d.com,2013-02-04:2985220:Topic:7830322013-02-04T20:45:33.851ZJon Mirtschinhttps://www.grasshopper3d.com/profile/JonMirtschin
<p><span>A discussion thread for posting questions and examples relating to Analysis model generation in Grasshoper to Autodesk Robot Structural Analysis.</span></p>
<p><span>A discussion thread for posting questions and examples relating to Analysis model generation in Grasshoper to Autodesk Robot Structural Analysis.</span></p> Truss optimization exampletag:www.grasshopper3d.com,2012-08-08:2985220:Topic:6544932012-08-08T06:29:43.711ZMichael van Telgenhttps://www.grasshopper3d.com/profile/MichaelvanTelgen
<p>Hi Everyone,</p>
<p></p>
<p>Last week I decided that it would be fun to analyze some structural engineering problems and solve them by using a combination of GH, SSI for GSA and Galapagos. :)</p>
<p>In today's video I'll deal with the design of a simply supported planar truss.</p>
<p><iframe frameborder="0" height="315" src="https://www.youtube.com/embed/xckQEPPC-vA?wmode=opaque" width="560"></iframe>
</p>
<p>Next week I'll explore a bridge based on the M8 Harthill Pedestrian Bridge…</p>
<p>Hi Everyone,</p>
<p></p>
<p>Last week I decided that it would be fun to analyze some structural engineering problems and solve them by using a combination of GH, SSI for GSA and Galapagos. :)</p>
<p>In today's video I'll deal with the design of a simply supported planar truss.</p>
<p><iframe width="560" height="315" src="http://www.youtube.com/embed/xckQEPPC-vA?wmode=opaque" frameborder="0"></iframe>
</p>
<p>Next week I'll explore a bridge based on the M8 Harthill Pedestrian Bridge design.</p>
<p>Please post any questions you may have in the comments and I'll gladly answer them. The definition is included below.</p>
<p></p>
<p>Michael</p> Oasys GSAtag:www.grasshopper3d.com,2012-06-18:2985220:Topic:6199352012-06-18T16:07:05.909ZJon Mirtschinhttps://www.grasshopper3d.com/profile/JonMirtschin
<p>A discussion thread for posting questions and examples relating to Analysis model generation in Grasshoper to Oasys GSA.</p>
<p></p>
<p>Wouter Brok raised the question here <a href="http://www.grasshopper3d.com/xn/detail/2985220:Comment:619778?xg_source=activity">http://www.grasshopper3d.com/xn/detail/2985220:Comment:619778?xg_source=activity</a> about how to generate an element capable of tension resistance only.</p>
<p></p>
<p>Tie elements are available in GSA to emulate cables and tensile…</p>
<p>A discussion thread for posting questions and examples relating to Analysis model generation in Grasshoper to Oasys GSA.</p>
<p></p>
<p>Wouter Brok raised the question here <a href="http://www.grasshopper3d.com/xn/detail/2985220:Comment:619778?xg_source=activity">http://www.grasshopper3d.com/xn/detail/2985220:Comment:619778?xg_source=activity</a> about how to generate an element capable of tension resistance only.</p>
<p></p>
<p>Tie elements are available in GSA to emulate cables and tensile rods. They can be generated in the Geometry Gym plugin be assigning the Beam type in the Beam Attributes component. Model attached.</p>
<p></p>
<p><a href="http://storage.ning.com/topology/rest/1.0/file/get/2654760291?profile=original" target="_self"><img width="750" src="http://storage.ning.com/topology/rest/1.0/file/get/2654760291?profile=RESIZE_1024x1024" width="750" class="align-full"/></a></p>
<p></p>
<p>Note this will force the GSA solver to use a non linear solver to enforce this. If you're confident your loading scenarios will only induce tensile forces, you can still use the static solver by setting a bar element (and then verifying manually no compression force exists).</p> SAP2000tag:www.grasshopper3d.com,2012-05-16:2985220:Topic:5970062012-05-16T19:49:44.760ZJon Mirtschinhttps://www.grasshopper3d.com/profile/JonMirtschin
<p>Here's a thread for questions and suggestions specific to the Geometry Gym addon to interact with SAP2000 Structural Analysis. Note you can filter my blog for posts/examples specific to SAP 2000 using the tag cloud or this link here:</p>
<p><a href="http://geometrygym.blogspot.com/search/label/SAP2000">http://geometrygym.blogspot.com/search/label/SAP2000</a> </p>
<p></p>
<p>First post relates to questions raised here: …</p>
<p>Here's a thread for questions and suggestions specific to the Geometry Gym addon to interact with SAP2000 Structural Analysis. Note you can filter my blog for posts/examples specific to SAP 2000 using the tag cloud or this link here:</p>
<p><a href="http://geometrygym.blogspot.com/search/label/SAP2000">http://geometrygym.blogspot.com/search/label/SAP2000</a> </p>
<p></p>
<p>First post relates to questions raised here: <a href="http://www.grasshopper3d.com/xn/detail/2985220:Comment:597170?xg_source=activity">http://www.grasshopper3d.com/xn/detail/2985220:Comment:597170?xg_source=activity</a></p>
<p></p>
<p>SAP2000 uses slightly different terms to other structural analysis software (ie Load Patterns are equivalent to Load Cases in most other software). I am trying to do my best to ensure the GH plugin terminology matches, but still needs improving and this doesn't help with what connects to what. If you spot something you think can be improved, please let me know.</p>
<p></p>
<p>I've attached my subtle changes to your GH def. Note that at least one of the forces needs to be activated to true to get results to emit.</p>
<p></p>
<p>I had a request to report stress the other day, but when I went to check you can only extract the force using the API, so I need to find some time to do some additional coding to calculate these from the section properties. Axial force you might be able to quickly calculate from the force using GH components. </p>
<p></p>
<p>Note also I recently enabled the ability to nominate the SAP model units (ie Feet and kips) from a right click on the ssiBake button. This should be done prior to the first exchange to SAP, so either save, close and restart Rhino, or disable the solver prior to first opening the model to make the change.</p>
<p></p>
<p><a href="http://storage.ning.com/topology/rest/1.0/file/get/2654751045?profile=original" target="_self"><img src="http://storage.ning.com/topology/rest/1.0/file/get/2654751045?profile=original" width="699" class="align-full"/></a></p>
<p></p>
<p>Hope it helps, look forward to hearing more.</p>
<p></p>
<p>Cheers,</p>
<p></p>
<p>Jon</p> Application of SSI for GSAtag:www.grasshopper3d.com,2012-01-12:2985220:Topic:5153822012-01-12T13:57:14.439ZMichael van Telgenhttps://www.grasshopper3d.com/profile/MichaelvanTelgen
<p>Hi everyone,</p>
<p>This week I made a short film about my thesis work, which includes the use of Smart Structural Interpreter, as well as Galapagos.</p>
<p>I've uploaded it here because it depicts the usefulness of parametric designing in structural engineering.</p>
<p>If you have any questions, please post them here or send me an email<iframe width="560" height="315" src="http://www.youtube.com/embed/6YVZrAniHYw?wmode=opaque" frameborder="0"></iframe>
</p>
<p>Hi everyone,</p>
<p>This week I made a short film about my thesis work, which includes the use of Smart Structural Interpreter, as well as Galapagos.</p>
<p>I've uploaded it here because it depicts the usefulness of parametric designing in structural engineering.</p>
<p>If you have any questions, please post them here or send me an email<iframe width="560" height="315" src="http://www.youtube.com/embed/6YVZrAniHYw?wmode=opaque" frameborder="0"></iframe>
</p> New GH Plugin, Egret (Structural Analysis)tag:www.grasshopper3d.com,2011-05-13:2985220:Topic:2398362011-05-13T08:44:01.000ZJon Mirtschinhttps://www.grasshopper3d.com/profile/JonMirtschin
<p> </p>
<p>I've been developing a new plugin for Grasshopper that can directly solve Structural Analysis models. The first alpha release can be downloaded to test, <a href="http://www.geometrygym.com/downloads">http://www.geometrygym.com/downloads</a></p>
<p> </p>
<p><a href="http://www.geometrygym.com" target="_blank"><img class="align-full" src="http://storage.ning.com/topology/rest/1.0/file/get/2654709346?profile=original"></img></a></p>
<p>To get started, install/update StructDrawRhino (link above) and Egret. At present Egret is only a GH plugin, so run the rhino command…</p>
<p> </p>
<p>I've been developing a new plugin for Grasshopper that can directly solve Structural Analysis models. The first alpha release can be downloaded to test, <a href="http://www.geometrygym.com/downloads">http://www.geometrygym.com/downloads</a></p>
<p> </p>
<p><a target="_blank" href="http://www.geometrygym.com"><img class="align-full" src="http://storage.ning.com/topology/rest/1.0/file/get/2654709346?profile=original"/></a></p>
<p>To get started, install/update StructDrawRhino (link above) and Egret. At present Egret is only a GH plugin, so run the rhino command sdrZZLicenseRequest</p>
<p> </p>
<p>You can download the sample model from <a target="_blank" href="http://ssi.wikidot.com/local--files/2011-blog-posts/110509%20egret%20truss.gh">here</a></p>
<p> </p>
<p>It's still very early days, lots of testing and improvements to make, but it is already capable of producing useful results. This is not intended to be a substitution for a commercial solver. It is intended that accessing a solver and results directly will be faster for linear static analysis conducted from a solver such as Galapagos.</p>
<p> </p>
<p>Present testing of Galapagos is underway, GH0.8.0010 had a change made that prevents access to the result and GH0.8.0009 starts but falters. I will contact David after his holiday (in a week or so) to resolve this.</p>
<p> </p>
<p>I do intend to add more attributes including finite elements, end releases, more extensive loading and more extensive result extraction. If you suggestions or requests, let me know and I will make a priority.</p>
<p> </p>
<p>Please carefully test and validate any results prior to acceptance. Report any identified issues and I will address them ASAP.</p>
<p> </p>
<p>Hope you find it useful,</p>
<p> </p>
<p>Jon</p>