Recent content by Lucas84

Ok so if I understood no one can help...Ok then, thanks anyway (even if I'm the same place as I was a week ago)

Hi again everybody, First of all I wanted to apologize for my late answers : I know that nobody care but I just have the Internet (and COMSOL) at the office and besides with the jet lag (I'm from France) it's not easy to answer instantly (and correctly). Anyway... I'm sorry to say that but I'm...

Ok, first of all once again thanks for your help. So if we go back to the topic my main issue is the frequency-response analysis. I would like to obtain the same result as Mech_Engineer did (which look pretty good to me). As Alephzero suggest I've tried every direction for the applied force ...

Up to know, I didn't really pay attention to the meshing, I let COMSOL do it automaticly. From what I know, its a varied tetrahedrons meshing, but I don't know how many elements I've got. I didn't apply any load for the modal analysis. What I said in my previous post was that the modal...

Ok for the eigenfrequencies, using MATweb silicon mechanical properties with COMSOL I get : Mode 1: 45.467 kHz Mode 2: 284.68 kHz Mode 3: 437.23 kHz Mode 4: 447.07 kHz Mode 5: 798.66 kHz Mode 6: 1369.5 kHz Which is approximatively the same thing (why is there a small difference between the...

Thanks again for your help AlephZero..So, I've applied for both simulation (eigenfrequency and frequency-response) a Rx=0/Ry=0/Rz=0 constraint on the clamped surface. But I don't get the same result. The only option I've changed between those two simualtions is the Load. However, there might be...

First of all thank you very much for your help alephzero. I've look at COMSOL help, and the input is in Hz as well as the results. However, I did a simulation on a wide range of frequency and here's what I got : http://img408.imageshack.us/img408/5463/resonancexq3.jpg It gives me a...

No one ? Please...I saw in a previous post that some of the people around here had a good knowledge of COMSOL... Please, please, help me...

Hi everyone, I've just started to use COMSOL for the study of a simple cantilever beam and I'm facing some problems while calculating the eigenfrequencies and the frequency-response. I use the 3D MEMS Module>Solid, Stress-Strain. I create a 500e-6,100e-6,10e-6 box. From the Sub-domain menu...