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Doubt with reduction of mass and stiffness matrices in a system of 2 pdes
it makes sense that M12 and M11 are empty as there is just a m component in the second partial diferential equation. I will chec...
etwa ein Jahr vor | 0
Frage
Doubt with reduction of mass and stiffness matrices in a system of 2 pdes
hello, I have this code: clear all; clc; %---------Accelerators sensitivities--------------------------------------- sens0...
etwa ein Jahr vor | 2 Antworten | 0
2
AntwortenFrage
code does not call a designed function that works in other program
Hello and sorry for this long query. I am not very good at this , I have to admit it. I am encountering an issue when trying to...
etwa ein Jahr vor | 0 Antworten | 0
0
AntwortenFrage
Obtain natural frequencies of a structural model.
I have created a mechanical model: modelTwoDomain = createpde("structural", "transient-planestress"); structuralProperties(mo...
etwa 2 Jahre vor | 1 Antwort | 0
1
AntwortFrage
natural frequencies of the system
sorry.. this is a very silly question. I saw somewhere how to look at the natural frequencies of a system defined as modelpde ...
etwa 2 Jahre vor | 1 Antwort | 0
1
AntwortFrage
for loop and function handle
Hello, I would really appreciate an answer as this is driving me crazy. I have a system of PDE, and I have a plate geometry. I...
mehr als 2 Jahre vor | 1 Antwort | 0
1
AntwortCan someone tell how to use state.time, state.u simultaneously?
I am also having some issues with state.time. I have 5 time instances and it seems just to read 0 and a randon number.. then it ...
mehr als 2 Jahre vor | 1
Frage
boundary conditions and solvepde
Hello again and hope someone can guide me. I have different edges of a plate, and those edges have different boundary condition...
mehr als 2 Jahre vor | 1 Antwort | 0
1
AntwortMatlab pde toolbox, transient thermal model: state.time-values, used as input for a time-dependent internal heat source do not correspond to defined tlist-values
I have a similar problem with a mechanical time dependant problem returning NaN in some state.time. if you find a solution, let...
mehr als 2 Jahre vor | 1
Frage
boundary conditions in PDE
I have a time dependant PDE system: syms pres syms u1(x,y,t) u2(x,y,t) pdeeq = [-laplacian(u1,[x y])+u2; D*laplacian(u2,[x ...
mehr als 2 Jahre vor | 1 Antwort | 0
1
AntwortFrage
Create pde as structural dynamic problem
Hello all again: I have a system of PDEs described as follows: syms pres syms u1(x,y,t) u2(x,y,t) pdeeq = [-laplacian(u1,[x...
mehr als 2 Jahre vor | 1 Antwort | 0
1
AntwortFrage
Craig bampton model reduction
Hello all. I have a pde model with the following characteristics: PDESystemSize: 2 IsTimeDependent: 1 G...
mehr als 2 Jahre vor | 1 Antwort | 0
1
AntwortFrage
Boundary conditions: mechanical system
first of all, sorry if the question is silly, again my inexperience: I have this code: T=0.05 for j = 1:numel(edges) edg...
mehr als 2 Jahre vor | 1 Antwort | 0
1
AntwortFrage
interpolateSolution for a system of time dependent PDEs
Hello and sorry again if the question is silly. I have a system of 2 PDEs. I solved them using the command: res=solvepde(mo...
mehr als 2 Jahre vor | 1 Antwort | 0
1
AntwortFrage
problems with C/C++ compiler. Matlab R2022b
Hello. I downloaded the suggested app (cannot honestly remember the name) and then in the command window i typed: mex -setup ...
mehr als 2 Jahre vor | 1 Antwort | 0
1
AntwortFrage
function handle as boundary condition
sorry if this is a very silly question as I am quite new using matlab. So I apologise in advance. I have a vector with accelera...
mehr als 2 Jahre vor | 1 Antwort | 0
1
AntwortFrage
edge numbering in matrix dl and pde model
Hello, I have a question. I obtain the matrix dl with the function decsg [dl,bt] = decsg(gdm); In dl the index column corresp...
mehr als 2 Jahre vor | 1 Antwort | 0
1
AntwortFrage
boundary conditions in nodes of a plate
I have defined a mesh and different subdomains. These may change depending of the number of regions that I need to create, there...
mehr als 2 Jahre vor | 1 Antwort | 0
1
AntwortFrage
I need to align 3 signals by cross correlation
I have 3 signals. I am using the code in https://uk.mathworks.com/help/signal/ug/align-signals-using-cross-correlation.html. My ...
fast 3 Jahre vor | 1 Antwort | 0
