User:Eml4500.f08.jamama.jan/Meeting18

Mtg.18, Monday 6 October, O8



Connecting array "conn," consider the 2-bar truss system (p. 5-6 $$ \rightarrow $$ shown above)



conn(e,j) = global node number of local node j of element e

Location matrix master array: "lmm" (the same 2-bar truss system (p. 5-6) that is shown above)



lmm(i,j) = equation number (global dof number) for the element stiffness coefficients corresponding to the j -th local dof number.

Method 2 to derive $$ \mathbf{k}_{4 \times 4}^{(e)}: $$

Transform a system with $$ \mathbf{4} $$ dofs into a system with also $$ \mathbf{4} $$ dofs (instead of only $$ \mathbf{2} $$ dofs), so that the transformatin matix is now $$ \mathbf{4 \times 4} $$ and hopefully invertable (local-to-local transformation).