A statistical method to identify main contributing tolerances in assemblability studies based on convex hull techniques

Abstract

Abstract:In tolerancing, it is important to obtain recommendations from tolerance simulation results for optimizing tolerance values or the tolerance scheme. For this purpose, sensitivity analysis identifies the importance of single input parameters for received simulation results. This paper presents a method to adopt global sensitivity analysis methods on convex hull based tolerancing techniques, such as deviation domains. The focus of this paper lies on assemblability studies, in which the simulation output is a clearance. A method to estimate the influence of single part tolerances on the assembly clearance is proposed and performed for a pin-hole connection.

Key Characteristics identification by global sensitivity analysis

“…The different indices are studied with respect to their applicability during conceptual design. Ziegler and Wartzack [14] implemented global sensitivity analysis methods on convex hull based tolerancing techniques, such as deviation domains.…”