Method for designing a web that links parts to a carrier being processed in a progressive die

A computer implemented method for designing a web (4) linking parts (3) to a carrier (2) in a sheet metal strip (1) that is processed in a progressive die process, comprises the steps of* processing input actions from a user, the input actions specifying parameters of web primitive elements, the web primitive elements comprising at least connections (5), each connection (5) representing a link between sheet metal sections;* the user input actions specifying, for each connection (5), a first connection point (13), at which the connection (5) is joined to a first sheet metal section, and a second connection point (13), at which the connection (5) is joined to a second sheet metal section;the method allowing for a user input of a deformability parameter associated with a connection (5), for modifying a spring constant of the connection (5) in a direction between the first and second connection points (13).