Reanalysis of static response and its design sensitivity of locally modified structures

This paper proposes a reanalysis method of static response and static response design sensitivity of locally repeatedly modified structures. By partitioning global stiffness matrix K(b) in terms of degrees of freedom affected directly by modification of structural parameters and matrix triangle factoring, the dimension of the equilibrium equation for reanalysis is decreased. The static response and static response design sensitivity of locally modified structures can be solved rapidly and simultaneously.