Search Results - 湖北福彩30选5玩法『9TBH·COM』158计划网时时彩20192023年3月19日6时0分33秒.H5c2a3.jeusyfvdq

Comment on: Photo '100806_zip_curvature_adjustment_s': y interesting and smart way to construct surface. I tried some experiments out using a similar idea - take a developable surface which has a series of holes cut through it now offset that surface and unroll both of them, once both have been cut out insert a dowel into the holes (the dowel represents the offset distance). In the end the shape is recreated via tension and in that way there are some similarities. With your concept the thing I have trouble figuring out is how do you cut the variable angle kerfs. Are you using a 5-axis swarf cut, a cnc panel saw - how do you control this? It would be great to have a set of constraints which limit the number of possible angled cuts - these limits would equal the number of v-groove bits you have in the cnc - and then you could just cut the lines with the programmed tool which matches the given angle. Or maybe I am completely wrong, now I think I am wrong, about the execution and you are only changing the gap between each kerf and the angle of the side wall stays constant. Anyway to answer your question catia can analyze the characteristics of a piece of formed material (this analysis is usually applied to sheet metal and to design forming tools)it's just a matter or defining the material to match that which you are using. Another possibility although not as numerically clear is using a simulation tool like Maya cloth or Virtools. I know this maybe less likely but you can define all sorts of materials in Maya and then simulate their behavior under numerous forces and constraints. I think it would work it's just how do you extrapolate the values Maya needs and then correlate them back into the cloth parameters. Once it yields the final formed mesh then further analysis could be performed in cosmos, ansys, or catia. I have one other suggestion. In solidworks if you perform a lofted bend on a sheet metal part and then generate a flat pattern it creates a large set of bend lines representing how to perform the bending of an unusual shape using a metal brake. It seems like those bend lines could be machined with you technique to create lofted forms instead of extrusions. What materials seem to work best so far, have you only been using wood (the purple stuff is probably not wood)? If you are ever in Los Angeles I have a shop with a 3 axis and 5 axis router, a large vacuum bag, and all the other things to experiment on this and would be open to this.…; Added by machinehistories at 12:41pm on August 11, 2010

Comment on: Topic 'A Geodetic exoskeleton tower': Amuse yourself by trying to figure what kind of series logic could deploy (or not) these room unit combos across the blue space grid shown. 2. Let's assume that surgery etc etc departments are sited in some ground floor and their requirement for rooms is variable ... meaning that some kind of heuristic GH approach must be applied here (for instance : fill the first level with rooms required by all departments with min distance from a given core and if more are required go to next floor etc etc). The real room unit cluster looks like that (all units are prefab) 3. Voids in the whole cluster deployment (avoid Soviet type of bloc aesthetics) mean that culling could be challenge here (we need ...er..."visual" culling , so to speak) 4. After finishing some solution create custom preview(s) in order to visualize what dept owns what rooms. 5. If in trouble with Architectural things > relax > be cool > open 3d PDF > be a great Architect in just 10 easy steps. PS: of course I know GH clusters...but as they are they violate my rule N1: never walk the walk if no return is possible, he he. But assuming that David could resolve the return issue (sure he can) this is NOT the answer for my "proposal" for multiple Canvas - again like multiple Views in any CAD stuff these days. Just imagine clusters with some serious hierarchy depth > where am I ? what input comes from what output? I'll be back with a chaotic case (Series in complete anarchy) in order to demonstrate the critical necessity for a visual Tree Manager/Viewer (a visual thing within the GH visual thing). For manager read : decomposer, composer, visual identifier (per data item/branch) tree re-mapper, anything actually. more soon (and a in depth analysis about what a Tree Manager/Viewer should do - in an ideal world, that is) Cheers, Peter …; Added by peter fotiadis at 12:05pm on December 5, 2011

Comment on: Topic 'Creating an array in Grasshopper': which needs to go in the first line only. Each value K is one element of the knot vector XYZ is an individual control point. Each point gets its own line/string in the output list R is the weight of the XYZ point defined in the same line I can get all these data into separate lists easily enough using the buttons etc. But getting them into the proper order and moving stepwise down the data to generate the desired output string list is eluding me so far. My thought is to make an array of columns. Column one is a list of knot values. Column two is a list of X values. Column 3 = list of Y values Column 4=z values Column 5 is weight values etc The idea would be to read the first value in each list into a list of five elements, then make a string out of it. The second value of each column into a separate string on the next line, then the third value from each column into the third string in the output list and so on.The last few values in the output list will contain knot vector elements only, as there are more of these than there are control points. Some of these curves are very long, with many control points, like hundreds and hundreds. It seems I should be able to pull the lists of interest and combine them into a tree somehow; so far all I have been able to manage is to get them into a single list by starting with control points, then weaving each list of interest successively into the growing list. I'm thinking I need to get the list for each parameter into an individual branch, then read a path across the branches at each index value. But I am missing something about the terminology. I have watched a few videos and it makes sense when people are pulling nested geometry out of models, but this is a little different. More of a data management issue. I'm sure if I wrestle with it I will get it, but it may not be pretty. Any pointers appreciated. A couple of approaches are attached. Not sure whether to loop a list subset through the data or do something else. Thanks, Karl in LA…; Added by Karl W at 1:15am on January 21, 2012

Comment on: Topic 'Divide in equal distance': e in Euclidean space then the distance metric can be discontinuous: Discontinuous means that a tiny change in input may result in a large change in output. Observe the image above, we start measuring euclidean distances from point A. At first the process appears to be continuous. We measure at distance b and we get point B. We increase the distance slightly to c and we get point C, which is very close to point B. We increase the distance slightly again to d, but now suddenly we're in a completely different location. This jumping behaviour can mean that certain questions (such as: "how do I divide this curve into 4 points, all equally far apart?") do not have an answer. It could be possible for 3 and 5, but not 4. Another problem is that there may be multiple solutions. In the image above the point D isn't the only point that is d units away from A and coincident with the curve. There may be any number of those points depending on the shape of the curve, the location of A and the value of d. And of course once you have two (or more) solutions, you can have two (or more) answers. Then each of those solutions may yet again have more than one outcome for the next point in the chain and before you know it the question you asked has 35295 different answers and good luck trying to find one you like. Now of course sometimes it is possible to answer your question unambiguously. I made a solution that uses Galapagos. It's pretty slow, and it'll get slower the more segments you want: -- David Rutten david@mcneel.com Tirol, Austria…; Added by David Rutten at 4:26am on September 9, 2013

Comment on: Topic 'Kangaroo Tensile structure facade !! Please Help me !!': r planet Utopia? 2. In what sort of animal these "shaders" are to be used? Meaning that designing a "Viz" control for 2345,67 mini-membranes is one thing and doing it for your house is a totally different challenge. In plain English: it's more than possible to hit the Wall if lot's and lot's of items are invited to the party (you bring the girls and I'll provide the Vodka). 3. Do you like the idea of completely separating (on a spatial basis) input/viz control (what is on display and on what level of "detail") from the core logic (i.e. components). Pros: obvious, Cons: obvious. 4. Is this def planned as a "constant" evolution thing? Meaning that using, say, the mapper isn't the best idea if your input goes from {a;b;c} to {a;b;c;d;g;...;z}. 5. Have you any - even academic - plans (see 1) to walk the walk up to the end?. Meaning talking to Birdair/Taiyo Kogyo etc etc ( http://www.birdair.br.com/ ). If yes be prepared because these fellas work a bit differently as regards potential collaboration and feedback at design phase. BTW: the thing that would change the world as you know it: http://www.birdair.br.com/tensileArchitecture/tensotherm.aspx best, Peter …; Added by peter fotiadis at 2:05am on May 26, 2014

Comment on: Topic 'triangular mesh frame optimization': ts (other than Kangaroo - if required). Anyway notify if you want some taste of them (but they are a bit "chaotic" : too many parameters etc etc ...). Warning: Almost all are written with MCAD apps in mind: GH is used SOLELY as a graphical editor/topology solver and just makes the simplest instance definitions possible in order to send them (via STEP) to some MCAD (Frank G uses CATIA/Digital Project as you may probably know, CATIA is my favorite toy as well) for actually designing the components and composing the whole. 2. "Equality" in modules (panels/glass/lexan) it's not an issue (other than aesthetics). I mean cost wise since modules are prepared via CNC these days. I wouldn't suggest to waste your time with "equality" puzzles and completely ignoring the big picture (real-life) that is FAR and AWAY from aesthetics. I mean: assume that I of someone else or Daniel can "equalize" things (up to a point): Is this sufficient for designing a similar real-life solution? In plain English: don't get occupied by the tree and ignore the forest. 3. As regards the frame in most of cases some MERO type of modular system is used: either a "flat" dome-like arrangement or a classic spaceframe or a hybrid system [push: tubes, pull: cables]. Hybrids are the most WOW (and costly) for obvious reasons. When properly done (and combined with a planar glazing system) THIS is the star of the show. 4. As regards the skin we use either "hinged" custom stuctural/semi structural aluminum extrusions (they can adapt to different dihedrals up to a point) or classic custom planar SS16L systems that also can adapt to dihedrals. A custom planar glazing solution is hideously expensive, mind (say: 1K Euros per m2). 5. Smart Glass tech (changes light transmission properties under the application of voltage) is gradually penetrating the market especially in future bespoke designs. So in a nutshell: these are "pro" territory - if I may use the term, thus I don't expect to find ANY similar "turn-key" solution in the very same sense that you can't find a tensile membrane turn-key solution. Meaning that practices that can do it ... er ... they keep the cookies for themselves. …; Added by peter fotiadis at 12:47am on March 7, 2015

Comment on: Topic 'Space Frame Mesh Modelling': ts (NOT meshes) using my (still WIP) BallPivot thingy (still highly temperamental despite wast quantities of Vodka consumed - in the Name Of Science, what else?): Watch this Forum for the forthcoming mother of all threads : Get Points > Do Something. On the other hand (real-life): 1. A truss without connectivity is nothing. 2. A truss without clash defection is nothing. 3. A truss without instance definition(s) is more than nothing. 4. A truss without (rather very complex that one, mind) roof/envelope stuff is nothing + pointless. 5. Mesh from points without a 1000% working ball pivot thingy is like 3rd marriage. And as you'll discover this Monday ... well ... "some" things would be MIA from the definition. Other than that: For Chap, David, Angel and anyone else interested on these freaky things (get points do something, that is). Do you people think that this (mode: dense [yellow stuff] ) has any meaning? VS that (mode: hex): I mean for the truss itself not the roofing paraphernalia. Notice that in this handsome hex mode we've already achieved max rigidity since we deal with tetrahedral stuff. PS: My aunt Drusilla finds the dense mode ... utterly pointless (and a bit disgusting). That's friends is the 1M question. …; Added by peter fotiadis at 4:28am on May 24, 2015

Topic: Grasshopper wishlist: he grouping of the sliders on the remote control panel. 4. Separate viewport(look at picture) 5. Cluster editor new wish My version grasshopper 0.8.0004 Best Regards,Valentin Kiev, Ukraine …; Added by Valentin at 12:41pm on October 13, 2010

Topic: The ultra mysterious perspective transformation: le] demo): 1. A transformation Matrix is a 4*4 collection of 16 values that "deform" 3d things according the values in the cells. The orthodox way is to deploy "cells" left to right and top to bottom. Rhino does the opposite (why?) hence we need the transpose method. 2. Since "translate" and "perspective" are "symmetrical" the transpose boolean toggle (within the C#) "flips" rows with columns ... so we get perspective or move. 3. When in perspective "mode" the vanishing points are computed internally within a min/max limit (per X/Y/Z axis) thus avoiding the usual havoc with "extreme" perspective angles (very common "glitz" in pretty much every CAD app - CATIA excluded). Vanishing points (and limits) are oriented with respect the pos/neg value of a given control slider. Note: slider values are percentages between min/max (mode: perspective) and/or actual values*100 (mode: move). 4.In order to start mastering the whole thing: don't change anything: just play with these 4 sliders selected: 5. The 123 sardine cans challenge: even with DeusExMachine = true (see inside C#: that one redirects the transformation per BrepFace and then joins the breps instead of applying it on a brep basis)... odd things (and/or invalid breps) occur ... thus what is required in order to make things working 100% ??. he, he best, Lord of Darkness …; Added by peter fotiadis at 1:10am on July 14, 2015

Topic: Energy modeling of a cylindrical tall building with diagrid structural thermal mass: find my initial files, reports and errors (Running E+ simulation on the initial setup took hours and ended up with numerous errors) I got a number of questions and would appreciate if you could answer them: 1- I have duplicated zones using "Honeybee Move". Is this the correct way to duplicate zones and if yes, should I rename all surfaces afterwards? I have renamed zones but not surfaces (The tower has 40 floors = 10 x typical group of 4 floors) 2- Should I convert all curvilinear objects to faceted geometry (or only windows and window-walls should be flat)? 3- In the next stage, I will add a second skin as the outer facade. Spiral structural elements (insulated thermal mass) are between interior and exterior areas, partly exposed to the sun. Should I split both interior and exterior zones to subtract these elements, and then solve the adjacencies? 4- To simplify the procedure and make it faster, I may simulate only 4 floors. Is it possible to force-hide the top roof and the lowest floor from the sun and other environmental factors? If yes, how? and do you know how much accuracy in the results would be lost in this case? 5- The outer skin would be all in glass, therefore in reality, the direct sun will affect the inner skin and the structural elements. I read somewhere that in HB+E+ simulations, direct sun turns to diffuse after passing the first layer of glass. Is that true? If yes, how can I make the inner skin exposed to direct sun in the simulation? Thank you very much for your time. Best, Aryan …; Added by Aryan Shahabian to Ladybug Tools at 3:07pm on June 4, 2016