Bea Greaves Posted January 10, 2005 Share Posted January 10, 2005 Does anyone use Vectorworks for designing tensile structures? And how would you do this? If not do you have any suggestions - we make shade structures and need a programme for the fabric cutting patterns. Many thanks. Quote Link to comment
Don Wood - Architect Posted January 10, 2005 Share Posted January 10, 2005 Bea Try this site: http://www.baytex.co.nz/ Don Quote Link to comment
mike m oz Posted January 11, 2005 Share Posted January 11, 2005 Bea Have a look at Plotmaker on the following websites. Aeronaut http://www.aeronautauto.com/Index.html - Have a VW add on for tensile structures and shade sails (go to the applications button and download the PDF pages). - Also have a look at http://www.aeronautauto.com/pages/vectorworks.html and http://www.aeronautauto.com/pages/plotmaker.html Sailscience http://www.sailscience.com/software.html Have details on Mac programs for sails and the like, including Plotmaker. TouchCAD http://www.touchcad.com/index.html Also appears to have tensile structure like capabilities which may be of interest to you. [ 01-10-2005, 09:27 PM: Message edited by: mike m oz ] Quote Link to comment
matto Posted January 11, 2005 Share Posted January 11, 2005 I remember this being post in the vector-script section of this forum http://techboard.nemetschek.net/ubb/ultimatebb.php?ubb=get_topic;f=21;t=000331 On reading i though it sounds like this guy is using VW to design Hot Air Balloons or something equally cool. He might be worth contacting in getting VW to work with tensile structures. Matt O [ 01-10-2005, 10:14 PM: Message edited by: iboymatt ] Quote Link to comment
bcd Posted November 23, 2010 Share Posted November 23, 2010 (edited) It is possible, by fixing some control points and estimating the flow of the fabric to define the wires using Nurbs Curves with a reasonable degree of credibility. Then use these to these to Loft with No Rail. I expect this is what you are doing already. You can further refine your Nurbs Surface using the 3d modeling tools. Edited November 23, 2010 by bcd Quote Link to comment
Kevin McAllister Posted November 29, 2010 Share Posted November 29, 2010 Blind Expert, I had to do something similar with a tensile object using BCD's approach. The one piece of advice I can offer is how you look at the curves. My understanding is that in most cases, the tensioned cables will take on a catenary curve (disclaimer - I am purely looking at it from a visual perspective and in no way qualified beyond that). It turned out to give a fairly accurate results in my case. Below is a screen capture of my drawing (? David Atkins Enterprises). And the result (not my photo, just from a web search) - http://sarahandtim.files.wordpress.com/2010/02/vancouver-olympics-opening-ceremonies-snowboard-in-the-air.jpg We were all surprised by the accuracy of the end result. Kevin Quote Link to comment
Kevin McAllister Posted November 29, 2010 Share Posted November 29, 2010 Yeah, right. Can we change places, Kevin? I'm not entirely sure how to interpret your response.... Kevin Quote Link to comment
bcd Posted November 30, 2010 Share Posted November 30, 2010 (edited) Another alternative is to setup 3d loci at key anchor points and join using a Nurbs curve and Model>Create Surface from curves. Edited November 30, 2010 by bcd Quote Link to comment
Jonathan Pickup Posted November 30, 2010 Share Posted November 30, 2010 create surface from curves using loci and NURBS curves is covered in the 3D Modeling in Vectorworks manual http://www.nemetschek.net/training/guides.php Quote Link to comment
bcd Posted November 30, 2010 Share Posted November 30, 2010 You can control the bendiness of your Nurbs curves by setting the degree to 1 and add points later. Quote Link to comment
starling75 Posted November 30, 2010 Share Posted November 30, 2010 You can use even this method: tensile wire tensile hide tensile render For more accurate result you could generate catenary curves using some script... This is lisp catenary routine I have found .. http://www.digitalcad.com/2001/05_may/images/math/catenary.lsp Should be doable in VS for vectorscript wizards like you Quote Link to comment
bcd Posted November 30, 2010 Share Posted November 30, 2010 Give us your elbow, it's not that far. Quote Link to comment
yelly Posted December 9, 2010 Share Posted December 9, 2010 Bea Greaves, Have you seen this document about tensile structures? Quote Link to comment
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