Showing papers by "Sandro Barone published in 2002"
TL;DR: In this article, an automated photoelastic method based on the phase stepping technique is described, which provides full-field maps of the isoclinic parameter and the relative retardation.
Abstract: In this paper an automated photoelastic method based on the phase stepping technique is described. It provides full-field maps of the isoclinic parameter and the relative retardation. The technique is based on processing six images of a photoelastic specimen acquired using plane and circularly polarized light. The number of acquisitions and the type of polariscope used in this approach have been chosen with the aim at reducing the influence of quarter wave plate errors and obtaining raw photoelastic data in a periodic form suitable for easy applications of automatic unwrapping routines.
54 citations
TL;DR: In this article, the influence of the errors of quarter wave plates in some of the most common automated photoelastic methods is reviewed and procedures to reduce, or eliminate, them are also suggested.
21 citations
TL;DR: In this paper, the authors describe how interated CAD/FEM tools can be employed to develop procedures for the static performance analysis of unconventional gears, and the potential characteristics, limits and capabilities of simulating real system behaviours are discussed.
Abstract: The development of extremely high performance aerospace power transmissions will be a very interesting technological challenge for the next future. In gear design for high power transmission, desirable characteristics, such as low noise emissions, low vibrations, minimum size, minimum maintenance cost, but most of all minimum weight can be obtained through the development of innovative layouts. However, most of the rules based on experimental data, by which common gearns are calculated and verified, are not applicable to transmissions whcih can be defined unconventional in terms of geometry and/or operation conditions (high power, high rotating speed, low weight). In these cases, numerical simulations can be performed bu using FEM codes. The objective of this work is to describe how interated CAD/FEM tools can be employed to develop procedures for the static performance analysis of unconventional gears. In the paper, potential characteristics, limits and capabilities of simulating real system behaviours are discussed.
4 citations
01 Jan 2002
TL;DR: A parametric 3D functional scheme is developed as entry-level model to specify mechanism composition and to give starting values to positions and dimensions for all main components in a neutral top-down design environment.
Abstract: In this paper, a CAD system and a multi-body kernel have been integrated using a neutral top-down design environment. In particular, a parametric 3D functional scheme is developed as entry-level model to specify mechanism composition and to give starting values to positions and dimensions for all main components. The system uses CAD models to calculate mass and inertia properties, and the description of nominal geometries for visualization. Mechanism definition is based on the following steps: creation of a schematic multibody system, extraction of part properties from solid models, assembly modelling, multibody mechanism generation. As examples, virtual prototyping applications are presented in the context of vehicle design.
2 citations