ProductsAbaqus/Design DSA provides derivatives of certain response quantities with respect to specified input quantities. These derivatives are known as sensitivities. The responses available for DSA are a subset of the list of Abaqus output variables and are known as design responses; the specified input quantities are known as design parameters. Quantities that are functions of design parameters are referred to as being design dependent. In this section the DSA theory is presented from the perspective of computing the required derivatives analytically, first for static stress analysis and then for frequency analysis. Alternative numerical approaches based on this theory are discussed. | |||||||||||