How can I arrange the global stiffness matrix of a 2D finite elements with each square or rectangle made of different materials?
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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 elements. But I need a MATLAB code I can use to compute the global stiffness matrix and calculate the displacements on each node if I apply force as boundary condition.
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