In today's multidimensional world, companies are constantly facing new, increasingly demanding challenges: global business and local operation, the standardization and individualization of products, demanding customers, and fierce competition. These companies want to achieve a shorter product-development time, lower costs, higher quality of the product, and finally, customer satisfaction. In order to achieve these goals, companies have to take into account the first customer's wants and needs during the process of developing a new product. This article presents the concept of solutions for the functional requirements in the concurrent development of a product by means of a descriptive matrix of the functional requirements and functionalities based on the generative model and criteria for describing the products, the function requirements, and the functionalities. The matrix of the functional requirements and functionalities model intends to improve the initial, preliminary design process, where only the most basic, sporadic information (such as functional requirements and functionalities) is presented. The tasks are parallelized and integrated to reduce the time and costs involved. The model was created as a tool in order to connect the functional requirements with existing technical systems. They partially or fully resolve the functional requirements on the basis of a mathematical model and predetermined conditions, and therefore do not depend solely on the designer's intuition. The concept improves the main shortcomings of other known methods such as the morphological box. In order to demonstrate the validity, the benefits of the method, the dynamics, to produce explanatory theories and to develop a method that is relevant to practice, the matrix of the functional requirements and functionalities model is tested against a concrete product.
This work presents a developed mathematical model that transforms functions and functionalities as sets from the functional domain and design elements domain. The sets are interconnected by a matrix model which we called the matrix of function and functionality (MFF). By the MFF model we are searching cross-sections of function and functionality sets. The cross-sections we called submatrices. Submatrices contain design parameters that designers need for development of new product conceptual variants. MFF is conceived as a tool used in conceptual design phase. MFF collects and binds data from the requirement list and transforms them into functional requirements. Compared to the morphological matrix, MFF is structured as multidimensional matrix, which according to the mathematical model presented in this work, generates a functional structure as multilayer functional structure. MFF simulates the iterativity of the design process in conceptual phase, generating new conceptual variants. According to the mathematical model of MFF, a computer application was made and also presented in this work.
Original scientific paper The paper describes the use of MFF (Matrix of function and functionality) as a tool in product development process. After years of analysis of matrix methods, functions and functionalities of the products, we have developed a matrix tool that is designed for a wide range of engineers to help developing of new products or their parts. The paper presents the core of the MFF, that is the mathematical model and the computer application. Basic idea was to create an innovative knowledge base in a specific area that contains at one place the knowledge of engineers acquired during their working life, or during product development. With MFF it is possible to generate completely new products with new functional structures where functions are unambiguously described by physical sizes -influencing the functions. Keywords: design process; function; functionality; MFF; product development Matrica funkcije i funkcionalnost kao alat u procesu razvoja proizvodaIzvorni znanstveni članak U radu je opisana MFF (matrica funkcije i funkcionalnosti) kao alat koji se koristi u procesu razvoja proizvoda. Nakon nekoliko godina istraživanja matričnih metoda, funkcija i funkcionalnosti proizvoda, razvili smo matrični alat kao pomoć inženjerima u razvoju novih proizvoda i njihovih komponenti. U radu je prikazana jezgra MFF, a to su matematički model i računalna aplikacija. Osnovna ideja bila je napraviti bazu podataka u određenom području koja na jednom mjestu sadrži stečeno cjeloživotno inženjersko znanje, ili znanje nastalo za vrijeme procesa razvoja proizvoda. Pomoću MFF moguće je generirati potpuno nove proizvode i njihove funkcijske strukture, gdje su funkcije jednoznačno opisane pomoću fizikalnih veličina-koje utječu na funkcije.
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