Grasshopper

algorithmic modeling for Rhino

Pachyderm Acoustic

Information

Pachyderm Acoustic

Pachyderm is a plugin largely used by Designers and Scientists alike to simulate acoustics in buildings, rooms, cities, and other settings.

Website: http://www.perspectivesketch.com/pachyderm
Location: Earth
Members: 125
Latest Activity: on Saturday

Hello Pachyderm Users,
We are going through an exciting period, including the startup of an organization to support the growth of Pachyderm, and extend the educational agenda of the project. In the next few weeks, we will be submitting our long-form 501(c)3 application, which will give us the rights of a not-for-profit organization established in the state of Connecticut. As part of the transition, we are phasing out the old website. The new site will be up in the next few weeks, and you can find it at:
 
 
We are looking forward to the next phase of this project, and we hope that you will be there with us to learn and continue to support us!
 
kind regards,
 
Arthur van der Harten
Executive Director
Open Research in Acoustical Science and Education
ORASE

Discussion Forum

Installation issues 35 Replies

This is a place to ask qustions about installation. Please post your questions here and I will get to them as quickly as I can.Continue

Started by Arthur. Last reply by Arthur on Saturday.

Mapping method 1 Reply

Dear All,I'm a new user of Pachyderm Acoust and I’have a request:How can I use the “the mapping method” in grasshopper?I’ve tried to use (pach_diretc) it but I don’t understand which input needs to…Continue

Started by giorgio nalin. Last reply by Taha B Nov 27, 2020.

Increased simulation time 2 Replies

Hello, I've been running ray tracing on a GH geometry that I plan to optimize using Opossum, so it has quite allot of variables. Up until now I have experienced simulation times up to 7 or 8 minutes,…Continue

Started by Morten. Last reply by Morten Nov 20, 2020.

line source in GH 3 Replies

Hi there! I am trying to use a line source in Grasshopper (with multiple receivers).I divided the line source into multiple point sources, but the IS block doesn't seem to work for more than one…Continue

Started by Giacomo Vairetti. Last reply by Arthur Sep 9, 2020.

Comment Wall

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Comment by Konsta on February 10, 2021 at 1:01am
Hi everyone!
I have installed Pachyderm on Rhino 6 but it cannot calculate anything. Could be that there is no option to assign a material under materials tab. Any thoughts?
Comment by Behdad on December 15, 2020 at 10:15am
Hello Everyone, I have installed Pachyderm. But when I open the folder of the program in "Program Files", the Rhino Plug-in file does not exist. I have tried to rerun the installation and chose the repair option but it did not solve the problem. Has anyone had this problem before?
Comment by idspaceman on October 1, 2020 at 10:58am

Hi, unfortunately none of the two links to the website work. Both links are broken or lead me to a page with a password protection. 

Comment by Arthur on September 4, 2020 at 11:56am

Hi Sebastian,

If your model is very complicated, this may be the reason. Occasionally, Rhino encounters a piece of geometry that can't generate a mesh, and then it fails pachyderm. I've tried to catch some of these cases, but some still elude us.

I can help you troubleshoot the model if you like. Can you send me the file to info@orase.org?

Arthur

Comment by Sebastian Novoa on August 31, 2020 at 10:38pm

Hello Arthur,

I'm trying to do a calculation inside a small chamber music hall (~490sqm). After applying a material to every surface and preparing everything (as told in this tutorial https://vimeo.com/247018860) I click on Calculate Solution and the button grays out and the message "Solution exception:Index was out of range. Must be non-negative and less than the size of the collection. Parameter name: index" appears and I can't try again until restarting Rhino. I know this has happened before but I can't find a solution. I have a fairly complex geometry with reflective panels hanging from the ceiling, I don't know if it may be affecting. Thank you in advance.

Comment by Petros F. on April 15, 2020 at 10:41am

Hi again Arthur,

Thank for replying, my bad indeed that material coefficient was able to assign data just fine as you mentioned.

I am facing a different problem atm,

Trying to use SurfaceSource, every time I assign a surface as a source Pachyderm won't run the calculations (hybrid model>impulse>calculate solution). The same 3D model will run the calculation with the other sources (dodecahedron, speaking person)

I am a) inserting SurfaceSource b) selecting a source surface c) choosing SPL for every 62.5/.../8000Hz, and I do get the dodecahedron speaker icon over the selected surface. When I hit calculate solution nothing is happening no msg in the command line.

Also when I am in Rhino environment Properties (Rhino Properties>Sound Source Control) when selecting the Surface source the octave/SWL/SPL is not present, at the same time if I choose a different source the chart will present.

Thank you in advance

Comment by Arthur on December 16, 2019 at 11:54am

Hi Petros,

I just tested both of those systems, and they seem to be working fine (both openings of .pac1 files, and custom absorption coefficients). However, if you have found something I can't reproduce, the best thing you could do is send me the .pac1 file, so that I can look into it.

Regarding the absorption coefficients, try again. I'm very certain that system works fine.

Arthur

Comment by Arthur on December 16, 2019 at 11:52am

Hi Surakist,

Sorry for the long wait. I didn't get a notice that you had posted... Happens sometimes.

First off, what pachyderm is doing is very computationally intensive, so unless the window outright disappears, it has not crashed. You should just wait for it to complete what it is doing.

Second, it is likely that you are using very low absorption coefficients. You should reconsider whether those coefficients are the right ones. There are few places on earth that have that much reverberation.

Let me know if you have additonal questions.

Arthur

Comment by Petros F. on December 14, 2019 at 12:42pm

Hi Arthur thanks for your great plugin and hi everyone,

on "pachyderm hybrid models" window

-I am facing some problems on opening analysis data that was previously saved as a file type ".pac1" from pachyderm.

-Also, I find a problem at the material section,  when I assign a custom material on a layer, it will automatically reassign this material to all the project layers. So I am using the "object acoustic setting" at rhino properties to input the absorption material data.

I am running latest pachyderm on windows Rhino 6.

I am just wondering if this is something known or is me doing something wrong.

Best regards

Comment by Surakist Hunpaisarn on November 8, 2019 at 9:27pm

Hi Authur

I am study in master degree and i am researching about Changing Acoustic in Multi functional space  

I have some issue about "Ray tracing" Component in grasshopper when i put all the value and then the Ray tracing will show a message "Preparing Threads" for long time and then clash and not responding and another case it can work but just some Ray that reached and then it clash again. I don't know why this component can not run. How solve this problem ? what should i do ?

ps. I use Minimum Convergence so Do i no need to put value in Number of Rays ?

 

Thank you

 

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