The product family design based on axiomatic design

A product family comprises a set of variables, features or components that remain constant from product to product which called product platform, and other that vary from product to product. Modularization and commonality is the basic properties of product family and it demands that the architecture of product family should be decomposed into modules to perform different functions independently. Axiomatic design is introduced to aid to decomposing the function and structure with its framework of independence axiom to minimize the dependence of functions of product. The product family architecture of butterfly valve is design by this method and as a case study.