Subject: Re: conversion: displacement,acceleration to sound pressure level - msg#00159

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Re: How to get started in ABAQUS

Hi Got hrough the documentation, Getting startetd with abaqus/cae. there are some tutorials there. that should get you somewhat comfortable amar ------------------------ Yahoo! Groups Sponsor --------------------~--> $9.95 domain names from Yahoo!. Register anything. http://us.click.yahoo.com/J8kdrA/y20IAA/yQLSAA/PMYolB/TM --------------------------------------------------------------------~->

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how to view stresses inside a 3D model by cutting it along a plane?

Hi dudes, i have been trying to view the stresses and other properties at nodes inside a 3D model by slicing them up along certain plane. well i heard that this is possible in ABAQUS. this is possible in other packages like FE-MAP but never saw one doing it in ABAQUS. could anyone who had tried this before help me out. thanks. cheers, bharath k __________________________________ Do you Yahoo!? Yahoo! Mail - 50x more storage than other providers! http://promotions.yahoo.com/new_mail ------------------------ Yahoo! Groups Sponsor --------------------~--> Make a clean sweep of pop-up ads. Yahoo! Companion Toolbar. Now with Pop-Up Blocker. Get it for free! http://us.click.yahoo.com/L5YrjA/eSIIAA/yQLSAA/PMYolB/TM --------------------------------------------------------------------~->

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Re: conversion: displacement,acceleration to sound pressure level

Hi Sonjoy I am stuying disc brake squeal. At the moment, I performed transient analysis to determine stability of the system. Of course, it will give me results in displacement, velocity and acceleration. FFT is normally used to convert from time to frequency domain. What I would like to have is sound pressure (SPL(dB) vs Frequency instead of vibration amplitude ( displacement/velocity/acceleration) vs Frequency. Hope this make more clear. --- SONJOY DAS <sonjoy.das@xxxxxxx> wrote: > Response or excitation associated with a vibrating acoustic medium > is expressed in terms of Sound Pressure Level (SPL in dB) whereas > displacement, velocity and acceleration are associated with a > vibrating solid medium. Though a sound pressure will generate in an > acoustic medium if there is a vibrating solid body in the medium, I > am not sure if you want to know this !!! Please be more clear. > > ~ Sonjoy > > ----- Original Message ----- > From: abd rahim abu bakar <abdrahim_abubakar@xxxxxxxxx> > Date: Wednesday, August 18, 2004 10:04 am > Subject: [ABAQUS] conversion: displacement,acceleration to sound > pressure level > > > Hi Everbody. > > > > Does anyone know to to convert displacement and acceleration to > sound pressure level? > > > > Thank you > > > ===== ABD. RAHIM ABU BAKAR *************************** OFFICE: Department of Engineering The University of Liverpool Brownlow Street L69 3GH Liverpool United Kingdom Mobile :07817933465 Email: arahim@xxxxxxxxxxxxxxx *************************** __________________________________ Do you Yahoo!? Y! Messenger - Communicate in real time. Download now. http://messenger.yahoo.com ------------------------ Yahoo! Groups Sponsor --------------------~--> $9.95 domain names from Yahoo!. Register anything. http://us.click.yahoo.com/J8kdrA/y20IAA/yQLSAA/PMYolB/TM --------------------------------------------------------------------~->

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boundary condition for a cylindralic model

Dear All, I want to model a 3D cylindralic model with inner pressure to simulate a tube inflation under inner pressure. My question is: how to set up the boundary condition to make the model fixed in space? I only want the two ends of the tube not to move in the axis direction, so I set the Uz=0.0 for the two ends and those are the only boundary conditions in the model. However during the simulation, the tube moved spatially. I tried to fix Ux=Uy=Uz=0 at a node at one end to make the whole model fixed in the space, however, I saw large distortion around that node. Any one can suggest how to deal with it? Do I need to model four springs that connect to the axis of the tube and use them to constrain the model? I cannot use axisymmetry element, I have to build a full 3D model with brick elements. Thanks for the helps Hub --------------------------------- Do you Yahoo!? Win 1 of 4,000 free domain names from Yahoo! Enter now. [Non-text portions of this message have been removed] ------------------------ Yahoo! Groups Sponsor --------------------~--> Make a clean sweep of pop-up ads. Yahoo! Companion Toolbar. Now with Pop-Up Blocker. Get it for free! http://us.click.yahoo.com/L5YrjA/eSIIAA/yQLSAA/PMYolB/TM --------------------------------------------------------------------~->