MATLAB Plotting Components of Strain EXX,EYY,EXY in MATLAB

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The discussion revolves around plotting strain components EXX, EYY, and EXY in MATLAB, specifically within a 2D framework using a tensor matrix. The user notes that EYY is zero, questioning whether this indicates no strain in the y-direction between the entities being compared. It is clarified that strain is a pointwise scalar, and the recommended approach for plotting involves displaying each component separately along a specified direction. The conversation also touches on the conditions under which shear strain EXY might be zero, even when EXX and EYY have values. It is explained that in materials with inversion symmetry, such as zinc-blende crystals, shear strain may be negligible, while in wurtzite crystals, shear strain is always present. This highlights the material-dependent nature of strain components in continuum mechanics.
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I am trying to plot the components of the strain EXX,EYY and EXY in a 2D framework in MATLAB.
The tensor matrix i have is B[exx,exy;exy,eyy]with each component 32x32 array.
The values of Eyy is zero does that mean that there is no strain in the y direction between the two entitie sthat I am comparing and also what is the best way to plot that .
 
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Each component is a scalar, so what are you doing?
 
Phrak said:
Each component is a scalar, so what are you doing?

Exactly, strain is a pointwise scalar, the best way to plot them along a particular direction and then plot them one by one, separately, as follows:

plot(x,exx)
hold on
plot(x,eyy)
plot(x,exy)
...
 
Thankx for the reply,
I am new to strain components. just a few fundamental question what are the possibilities that the shear starin exy should be zero even when exx and eyy should have some values.logiccaly applying the strain in a continumm where will a deformation lead to shear component being zero?
 
1stly, if your crystal is zinc-blende:
the inversion symmetry will give rise to the zero shear strain while shear strain can never vanish when lack of inversion symmetry. In general, the shear strain in zinc-blende is small...

2ndly, if your crystal is wurtzite:
the shear strain can never be ignored which means they always exist...


worldtop said:
Thankx for the reply,
I am new to strain components. just a few fundamental question what are the possibilities that the shear starin exy should be zero even when exx and eyy should have some values.logiccaly applying the strain in a continumm where will a deformation lead to shear component being zero?
 

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