ابعاد کاربردی و نرم افزار تلرانس برای برنامه های مهندسی همزمان

This paper describes the development of a prototype software package for solving functional dimensioning and tolerancing (FD&T) problems in a Concurrent Engineering environment. It provides a systematic way of converting functional requirements of a product into dimensional specifications by means of the following steps: firstly, the relationships necessary for solving FD&T problems are represented in a matrix form, known as functional requirements/dimensions (FR/D) matrix. Secondly, the values of dimensions and tolerances are then determined by satisfying all these relationships represented in a FR/D matrix by applying a comprehensive strategy which includes: tolerance allocation strategies for different types of FD&T problems and for determining an optimum solution order for coupled functional equations. The prototype software is evaluated by its potential users, and the results indicate that it can be an effective computer-based tool for solving FD&T problems in a CE environment.