Recent content by 2lai

I created a simplified model whose dimension is about 1% of true laminate. The pressure loading is in perpendicular to the laminate. Will be interesting to know the difference between static and nonlinear solvers in dealing with the geometrically nonlinear problem.

Brian, In my case the coefficient of temperature expansion, cte, of individual layer is temperature dependent rather than linear. I used to do nonlinear analysis to estimate the stress evolution during thermal cycling. I don't know what is the best way to solve this problem using static...

Thanks all for the input. It is interesting that I've run FEM for about a decade with solid mesh only! Regarding to the laminate, I probably have to do nonlinear simulation since the material properties of individual layer are temeprature dependent. With shell mesh, the static and nonlinear...

I did quick Solidworks simulation using both solid and shell mesh. The test laminate consists of a 5-layer stack including one layer with 2 different materials. The modulus of these 2 materials are 8 MPa and 110 GPa, respectively. In addition, a control laminate is constructed where the 110 GPa...

I have Solidwork 2010 Premium, and want to run nonlinear simulation. The shell model does not seem to work in this case.

Sorry I don't understand the definition of "2D elements". Does it mean to simulate any cross-section of the laminate, or the maximum mesh for each layer is 1 like shell model? The 1st approach is not working since the boundary condition is applied to the edge instead of top and bottom of the...

The boundary condition of the laminate varies. We want to look the stress profile. I agree that the strss in thickness direction does not change. It should be called as "2D stress distribution"

There will be multiple sub-millimeter layers in the laminate. We expect to see 3D stress distribution in each layer.

Hi, I am going to do mechanical simulation of a laminate with extremely high aspect-ratio, i.e. 2 meter length, 1 meter width, and 0.2 millimeter thickness. I am wondering which FEA software is the best to deal with such model? Thanks for the input.

Hi, I have a silicon wafer (4 inch in diameter, 200 micron thick) coated with a thin metal film (10 micron thick). The curvature of the wafer will be changed upon thermal cycling due to CTE mismatch. In order to simulate the stress evolution in Solidworks, the geometry is required to be fixed...

Hi, My model consists of a bar (0.1mm thick, 0.5mm wide) attached to a top plate. This bar is initially placed on top of liquid gel (0.3mm thick), then pressed 0.1mm down into the gel at a speed of 0.1mm/s. Is it possible to simulate the flow pattern of the liquid gel using SW flow simulation...

Thanks for the input. (1) The Mooney Rivlin parameters were obtained from the rubber, 1st material=800 psi; 2nd material=200 psi. I don't think it represents silicone rubber. (2) It seems that linear isotropic material model is better than Mooney Rivlin model for silicone rubber, although the...

After applying pressure, 0.1mm thick metal should be pushed into silicone for 0.1mm deep. However, the solution is not converged.

Hi, I have a simple model consisting a 0.1mm thick, 2mm wide and 10mm long busbar in contact with a 0.3mm thick, 10mm wide and 10mm long silicone. After applying 14psi pressure on busbar, it should penetrate into the silicone. The silicone is modeled as a mooney rivlin material. The boundary...

Thanks John for the IR image. Is it 320x240 resolution? Could you tell me the model of the IR camera?