So I need to know how does comsol calculate element stiffness matrice and assemble them, and then programming it in livelink for matlab. I didn't find methods in COMSOL Multiphysics Reference Manual. Could anybody tell me or any suggestions? To be more specific, let's say, the second-...
%%Establish for loop to calculate Stiffness Matrix for each element K = zeros(ndof*nnodes) for(i = 1:nelement) theta = connectivity_data(i,4); C = cosd(theta); S = sind(theta); U = [C.^2 C.*S -C.^2 -C.*S; C.*S S.^2 -C.*S -S.^2; ...
Related to this Question Let A be a 2 x 2 matrix, such that the columns are unitary vectors and orthogonal. Prove that A is invertible and that A^-1 = A^t. How do you calculate induced vector norms of a simple real matrix? Specifically, how do you do the induced 1-norm, induced...
% Calculate the determinant of the matrix A detA = det(A); % Display the determinant disp('The determinant of matrix A is:'); The determinant of matrix A is: disp(detA); double(solve(detA==0,w,'MaxDegree',3)) ans = 1.0e+02 * 0.0000 + 0.036...
How to calculate the theoretical strain? and the Elastic Modulus? Stress-Strain diagram A stress-strain diagram is plotted during the tensile testing of a material to determine the relationship between the stress and the strain at different loads. Various properties of the material are calculated ...
! task of the method is to calculate this force, and then use it to modify the position ! and velocity of grains. ! In lines 2-4, the initial conditions are set. It is necessary to set the number ! N of grains participating in the simula...
Next, we define T as the partial derivatives matrix of x to q, so: $$ {\mathbf{T}} = {\frac{{\partial {\mathbf{x}}}{{\partial {\mathbf{q}}} $$ (6) Equation (6) is used in order to calculate the derivatives of x as a function of q, to input in our virtual power ...
In order to calculate the outdate rate (ODR), STAT order status, and non-group-specific RBC transfusion rates, a simulation study was performed, incorporating data from 2017 and 2018, at two Canadian health authorities (HAs). Categories
and given that bacteria multiply by cell d ivision23, for the following calculations we assumed that the diamen- sions of an individual bacterium are 4 μm length by 1 μm width.To calculate the number of bacteria, we divided the bacterial surface coverage by the average size of...
. 3-24 expmv Function: Calculate matrix exponential multiplied by vector . . . . 3-24 expm Function: Improved algorithm for single-precision matrices . . . . . . 3-24 scatteredInterpolant Object: Use multivalued interpolation to interpolate multiple data sets simultaneously . . . . . . ....