Erik Kostson
Ansys Employee


See if the courses help answer some of your questions:
As for the stiffness, say for a beam element in FE, the Axial stiffness term in the element stiffness matrix is (E*A_cross_section)/Length_element, and similar for bending stiffness and so on – Ansys will than assemble a global stiffness matrix by adding the contributions from all these element stiffnesses. See a book on FEA theory, the EDX Cornell University free FEA course, and or the ansys help manual for more info.