Grasshopper

algorithmic modeling for Rhino

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.orase.org
Location: Earth
Members: 183
Latest Activity: Mar 18

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

Use pachyderm for street noise analysis and optimization of planning and building geometry solutions? 7 Replies

Hi - Is Pachyderm only for interior acoustic analysis or can I use it to test impacts of street noise? I am trying to position and shape 3 story residential buildings, with possible insertion of…Continue

Started by Matt Winkelstein. Last reply by Arthur van der Harten Mar 18.

Pachyderm does not load 2 Replies

Hi, I loaded Pachyderm into Rino 7 and tried a simple model in a box and it immediately crashed Rhino. I cycled through that a few times with the same result. I off loaded Rhino 7 and re-loaded…Continue

Started by Kenneth W. Martin. Last reply by Kenneth W. Martin Feb 9.

Installation issues 50 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 van der Harten. Last reply by Arthur van der Harten Feb 7.

Acoustical Analysis of an Outside Space 1 Reply

Hello everyone,I run often in some Problems with the analyisis of the outside space.It often makes an invisible Space where the soundwaves bounces of from even tho that Space doesnt exist in the…Continue

Started by Maximilian Huber. Last reply by Arthur van der Harten Feb 7.

Comment Wall

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Comment by Yasser Hafizs on April 17, 2017 at 10:47pm

Hi Arthur,

Could I get the example file for Pachyderm? Because your website is down and the dropbox link is dead. Thanks before

Comment by Arthur van der Harten on February 21, 2017 at 6:43am
Hi Antonio,
Try the Pachyderm_Mapping command. If you execute the stimulation in there, you can get an area map of the parameters.

The grasshopper component communicates with the Rhinoceros plugin. You did have received an example file with the grasshopper component.

Arthur
Comment by Antonio Treglia on February 21, 2017 at 6:35am

Hi Arthur,

I'm still working on the model of the stadium, with acceptable results. I would like to know if with Pachyderm I can get graphs of the analyzed parameters (T30, EDT, SPL...)  or I can see just the energy/pressure curves and the values of the other parameters.

Then, Pachyderm for GH is linked to the Rhino analysis? Or are they indipendent? I don't understand how to use the plug-in in Grasshopper...
Thanks for the availability.

Antonio

Comment by Antonio Treglia on January 16, 2017 at 7:11am

I'm using the 64-bit Rhino in Windows, and I have 16Gb RAM, I don't think that is the problem. I noticed that the crash comes when starts "calculating image set..".

I'll try to install again pachyderm and also Rhinoceros if it's necessary.

Comment by Arthur van der Harten on January 16, 2017 at 5:38am

My colleages at the office and I use the plugin often. It shouldn't be unstable. The only times I encounter this with users is generally if they are running in Parallels on a Mac, and that is a Rhino issue. Another possibility is that you don't have enough RAM to do what you want to do, or you are running in 32 bit, in which case the RAM you can use is limited (try again in 64-bit Rhino). If that is not the case, here are a few things to try:

1. check that none of the libraries are blocked. (right click all files in the installation and go to properrties, and if there is an unblock button in propertites, click it and apply.)

2. delete the .pset file in the pachyderm directory. (Pachyderm will make a new one).

3. Delete your Pachyderm directlory, and install again from the RC12 archive I provided earlier.

As for the blank receivers dropdown, I had forgotten about that issue. Just click in the white space of the dropdown and type the number of the receiver you want, and press tab. Then uncheck and check a source. That should work as a temporary workaround. (don't put in a number that does not match a receiver in the model, or it will crash). This will be fixed in a later version.

Comment by Antonio Treglia on January 16, 2017 at 3:16am

Sometimes it works, even if it's very ustable, but when I go to "Analysis" tab I receive this message: "Index is outside the matrix" and I can't see anything. Then, when I select a parameter (for example T-30, the software continues to crash). 

Comment by Antonio Treglia on January 16, 2017 at 2:50am

Hi,

I followed the instructions on the site, I assigned the material (using one of the default materials) and I use 200000 rays for the simulation, but when I launched it, Rhinoceros crashed.

I tried to change the number of rays, the materials and other parameters, but the result is the same, the software crashes every time. What do you think is the problem?

Comment by Arthur van der Harten on January 12, 2017 at 6:23pm

Hi Antonio,

You do not need a closed box around the structure, though you will probably need a very high number of rays to get a good result from the model.

It might make sense for you to use the Rhinoceros interrface before you use the Grasshopper interface. (type Pachyderm_Acoustic in the command prompt to get started. Follow the instructions on the Pachyderm website)

There is an example in the Pachyderm RC12 archive:

https://dl.dropboxusercontent.com/u/21521713/Pachyderm2.0.0.1%20RC1...

Again, the Rhino and Grasshopper plugins talk to eachother, so you should have them both loaded, and you should have the Rhino model open before opening the grasshopper model.

--Arthhur

Comment by Antonio Treglia on January 12, 2017 at 3:41am

Hi Arthur,

I'm sorry, I'm trying to set the model but I probably do something wrong. I saw that I need a source and at least one receiver for the simulation, but I don't know how to proceed. 

First of all, I have a simplified model of the stadium, and obviously it's an opened structure (you can see a part of it in the image below). To  the plug-in works, I need to create a kind of closed box around the structure?

Then, if it's possible, could you send me an example of a model where I can see how it works?

I'm really sorry but I'm completely new in this kind of software and analysis, and nobody in the department knows how to use this plug-in. Thanks for the patiance and the availability.

Comment by Arthur van der Harten on January 7, 2017 at 6:33pm

Hi,

Try with 200,000 rays, and please post a screenshot of your impulse response. (You will find this on the third tab of the Hybrid method interface).

 

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