MT-1620 al.2002 Stiffness Influence coefficients Figure 21.9 Physical representation of stiffness influence coefficients for cantilevered beam 1 unit displacement Ki=forces at i s to give a unit displacement at j and zero displacement everywhere else(at nodes (much harder to think of than Cil) Note: This can be defined for unconstrained structures Paul A Lagace @2001 Unit 21-14MIT - 16.20 Fall, 2002 Stiffness Influence Coefficients Figure 21.9 Physical representation of stiffness influence coefficients for cantilevered beam 1 unit displacement kij = forces at i’s to give a unit displacement at j and zero displacement everywhere else (at nodes) (much harder to think of than Cij) Note: This can be defined for unconstrained structures Paul A. Lagace © 2001 Unit 21 - 14