Samuel Ayinde

25 Questions 25 Answers 0 Followers

Questions related from Samuel Ayinde

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...

01 January 2019 9,223 1 View

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.

01 January 2019 1,120 0 View

Please, how I can set up level set in Comsol multiphysics which can be used for solving three dimensional problem?

Please, how I can set up level set in Comsol multiphysics which can be used for solving three dimensional problem? Thank you so much.

07 July 2018 562 4 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...

07 July 2018 6,982 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...

10 October 2017 3,783 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.

08 August 2017 8,206 0 View

How can I output global displacement in Comsol?

Please, how can I output global displacement (U) in Comsol? I want to calculate the compliance of my model. (Please, see the attached Comsol code). compliance = U transpose x Global stiffness...

07 July 2017 9,647 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...

07 July 2017 4,455 1 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...

05 May 2017 1,766 0 View

How can I apply boundary condition to a node in Comsol Multiphysics 5.2a?

Please, how can I apply force boundary condition to a node of an FEA model in Comsol Multiphysics 5.2a? Thank you.

05 May 2017 8,365 4 View

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

Please, I want to create a geometry in Matlab and issue a command from Matlab to Patran (or any other dedicated software) to mesh the geometry and return an output file which will be an input file...

05 May 2017 4,766 4 View

The filename, directory name, or volume label syntax is incorrect - Matlab

Please, help me: I want to optimize a model. I am using Matlab for the optimization, Hypermesh as a pre-processor for my model and Abaqus as my FEA solver. I want to control all the operations in...

05 May 2017 4,366 2 View

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

Hello, Please, help: I generated some Abaqus input files from Hypermesh. I want run the FEA with Abaqus directly from Matlab environment (I don't want to open Abaqus). After running each input...

05 May 2017 4,908 3 View

How can I interface MATLAB, meshing software and FEM software together?

I created a plain two-dimensional model in MATLAB using the coordinates of the boundary. I want to 1. Mesh the model with a dedicated meshing software. 2. Export the mesh to FEM software (e.g....

04 April 2017 3,971 5 View

How can I arrange the global stiffness matrix of a 2D finite elements with each square or rectangle made of different materials?

Each of the squares or rectangular elements is made of different materials with different Young's Modulus (see the picture below). I can compute the 8 x 8 stiffness matrix for each of the...

03 March 2017 1,941 5 View

How can we compute nodal displacements in finite elements using non-zero displacements as boundary condition on some of the nodes?

Please see the attached picture. I have the x-displacements and y-displacements for node 13, 14 and 15. (I do not have force boundary condition). I want to apply the given nodal displacements as...

03 March 2017 9,896 5 View

How can I resolve the stress distributions on the edge of a finite element to equivalent forces acting on the nodes?

In finite elements, I have an element (please see the attached picture) with different stress distributions on its different edge. Please, how can I resolve the stress distributions on the edge...

03 March 2017 8,971 4 View

How to arrange the stiffness matrix for a component made up of several materials?

Please how can I write the stiffness matrix for a component made up of several materials as shown below?

02 February 2017 267 1 View

In FEA, having used the nodal displacements to compute the nodal stresses, how can the nodal stresses be used to recover the same nodal displacements?

I want to compute nodal displacements from nodal stresses. This is my approach: I implemented an FEA using force as the boundary condition. And I obtained displacements D1. With my displacements,...

02 February 2017 505 8 View

How can I compute the compliance of a structural member, given the x and y displacement on each node of its finite elements?

I have the x and y displacements on each of the node of the finite elements of a structural member. How can I compute the compliance of the structural member, given these x and y displacement on...

01 January 2017 5,753 2 View

How can I compute the material elasticity tensor for a finite element in topology optimization?

01 January 2017 2,067 5 View

How can we compute the p value when we are comparing results from two samples?

Using the example of the attached table from the paper of Eraly et al, please can someone explain how to compute the p values for comparing results from two different samples? We are comparing...

06 June 2016 1,004 0 View

How will you concisely define wrench matrix?

Please, In a concise form, - What is wrench matrix? - Given K = stiffness matrix and W = Wrench matrix, why is K = W * WT and what does that mean? Thank you.

02 February 2016 9,926 0 View

Can anyone give a simpler explanation on the eigenvalues of a stiffness matrix?

Henri P. Gavin ("Mathematical Properties of Stiffness Matrices") gave some information about eigenvalues of stiffness matrices. "http://people.duke.edu/~hpgavin/cee421/matrix.pdf" I need a simpler...

01 January 2016 9,534 6 View

Any advice on the Eigenvalues of stiffness matrix?

If the eigenvalues of my 6 x 6 stiffness matrix are 100, 1200, 1250, 1300, 1320, 1330, what do these values mean? How can I locate the points of applications of each of these eigenvalues on my...

12 December 2015 6,084 2 View