Axis Transformation

T = [\begin{matrix} 1 & 0 & 0 & 0 & (Z - Z_{0}) & - (Y - Y_{0}) \\ 0 & 1 & 0 & - (Z - Z_{0}) & 0 & (X - X_{0}) \\ 0 & 0 & 1 & (Y - Y_{0}) & - (X - X_{0}) & 0 \\ 0 & 0 & 0 & 1 & 0 & 0 \\ 0 & 0 & 0 & 0 & 1 & 0 \\ 0 & 0 & 0 & 0 & 0 & 1 \end{matrix}) \begin{matrix}  \end{matrix}]

X, Y, Z	Global coordinates of the considered FE node
X₀, Y₀, Z₀	Coordinates of the center of gravity

Do you have any questions?