Derivative over double summation?

Please, can someone help me find the derivatives in this attachment? You can solve it in the attached word document. Thank you so much.

31 December 2018 1,038 0 View

Obtain element-wise strain energy in Comsol?

I am linking Comsol with Matlab. I can compute the strain energy density on the nodes of the finite element (Ws) and the unit is J/m^3. But I need the strain energy on each element of the finite...

31 December 2018 9,143 1 View

Implementing signed-distance function code directly inside Comsol?

Good day, Please, I need help: I have this signed-distance function code and I need to implement it directly inside Comsol (please, note that I do not want to couple Comsol with Matlab), but I...

06 July 2018 6,917 0 View

How can I vary the topography of a model in comsol?

I have a 3D model in comsol (Please, find the attached comsol model). I want to get the x, y and z coordinates of the model. And I want to use the z coordinate as design variable. the ultimate...

09 October 2017 3,689 1 View

Implement topography optimization and bead optimization to improve structural stiffness in Comsol

Please, I need help on how to implement topography optimization and bead optimization to improve structural stiffness of engineering component in Comsol. Thank you.

07 August 2017 8,156 0 View

How can I output global displacement in Comsol?

06 July 2017 9,492 4 View

Output area and perimeter of geometry from Comsol in Matlab workspace

I am using COMSOL Multiphysics 5.2a with MATLAB. Please find the attached MATLAB code generated from COMSOL. I already have the codes to generate the perimeter and the area of the...

06 July 2017 4,397 1 View

How can I create a geometry in Matlab and issue a command from matlab to patran to mesh it?

04 May 2017 4,701 4 View

Obtain Displacements, Stresses and Stiffness matrix for each Abaqus input files called from Matlab command window

04 May 2017 4,848 3 View

Output Comsol result from Matlab

Please help: I have a model in Comsol. I want to output y displacement result at some points [73 74 113 114 151 154 191 194 229 234 269] in the model. But the code is outputing the displacement in...

04 May 2017 1,713 0 View

Is there any tutorial for comsol general projections?

Hi, im trying to make a projection in a 3d comsol model. I have a non uniforme chanel and my intention is to get the average tempreture in the y-z cross section and se the average tempreture...

02 March 2021 4,624 4 View

Is it possible to do piezoelectric coupling in ANSYS-APDL or COMSOL between tapered substrate and rectangular piezoelectric patch?

How to do Piezoelectric coupling in ANSYS-APDL or COMSOL between tapered substrate and rectangular piezoelectric patch? Piezoelectric coupling between the rectangular substrate and rectangular...

02 March 2021 9,833 3 View

How can i resolve the "final solutuin is not converged" error in Comsol for my heat transfer simulation??

I have been trying to simulate heat transfer problem in Comsol 5.5 for long time but it always throw an error stating: "Failed to find a solution. Maximum number of Newton iterations...

28 February 2021 8,626 3 View

How to use measure capacitance change in COMSOL time dependent study ?

I want to measure change of capacitance due to relative displacement between two parallel plates in COMSOL. Distance between two plates changes with time. So I'm using a time dependent study but...

26 February 2021 8,567 3 View

Error in comsol?

Dear respected researchers, while performing CFD analysis in Comsol it's showing like this Error: Nonlinear solver did not converge. The maximum number of Newton iterations reached can...

24 February 2021 249 3 View

What software programs can directly simulate Additive Manufacturing Directed Energy Deposition (DED)?

I understand there are a lot of software programs that can simulate DED by going through specific modeling, simulation, and commands. For me, that was time consuming and results were not accurate....

24 February 2021 4,428 3 View

How can I find the effect of different parameters like (Reynolds number, Hartman number, volume friction etc.) in COMSOL?

Here I am facing this problem. I don't find any effect of this type of parameters. I am a beginner user of COMSOL.

23 February 2021 9,086 3 View

I am looking for a simple software program to model 3D chemical bonds. The purpose is to generate high-quality graphical abstracts. Any suggestion?

Hello everyone: I am looking for a simple software program to model chemical bonds. The purpose is to generate a high-quality graphical abstract for a top leading journal in the field of...

23 February 2021 8,012 3 View

How to Implement Elastoplasticity in a PCL model in COMSOL Multiphysics?

I am using COMSOL Multiphysics 5.5. I am trying to simulate the tensile test of PCL scaffolds. However, regardless of the strain, I have the elastic region all the time which is not true when it...

23 February 2021 4,050 1 View

Fictitious Boundary Meshing Method (FBM) in Commercial FEA software?

Is it possible to implement FBM in a commercial FEA software package, such as FEMLAB, COMSOL, or open source software like Moose?

22 February 2021 2,968 1 View