Sensitivity calculations for iteratively solved problems
Raphael T. Haftka · International Journal for Numerical Methods in Engineering · 1985
Abstract The calculation of sensitivity derivatives of solutions of iteratively solved systems of algebraic equations is investigated. A modified finite difference procedure is presented which improves the accuracy of the calculated derivatives. The procedure is demonstrated for a simple algebraic example as well as an element‐by element preconditioned conjugate gradient iterative solution technique applied to truss examples.