Modeling the early stages of a user-centered process in architectural design through adaptation of the methodologies of New Product Design

Last Updated on Friday, 06 January 2012 12:42

Authors: Heon SONG, Carole BOUCHARD, Robert DUCHAMP

Institutions: Arts et Metiers ParisTech, LCPI, Paris (France)

Abstract: In order to reach a degree of quality in architectural buildings that is likely to lead to user satisfaction, architectural design relies on integrating user-related information even before the generation of building concepts. However, integrating such information may be seen as a hindrance to architectural creation. It therefore seems necessary to propose a methodological approach that allows integration of a user-centered point of view as well as generation of creative architectural concepts. Our research proposes to apply a collaborative process of New Product Design (NPD) in order to enrich the more traditional process of architectural design. We will present some experimental work carried out as part of an architectural project for the design of emergency shelters, as an alternative to more usual habitats. We will then discuss the possibility of adapting NPD methodology to architectural design, and what potential this offers to improve the integration of user-related information within architectural creativity.

Keywords: architectural design, user centered design, New Product Design

Ijodir 2009 / Vol 4 n°2 - Modeling the early stages of a user-centered process in architectural design through adaptation of the methodologies of New Product Design
2010-09-20  325.16 KB  1786

Analysis of decomposed topology optimization problem

Last Updated on Wednesday, 09 February 2011 17:17

Authors: B. Radi, A. Makrizi

Institutions: Faculty of Sciences and Technology, Errachidia (Morocco), Faculty of Sciences Ben M’sik, Casablanca (Morocco)

Abstract: In topology optimization problems, we are often forced to deal with large-scale numerical problems, so that domain decomposition occurs naturally. Consider a typical topology optimization problem, the minimum compliance problem of a linear isotropic elastic continuum structure, in which the constraints are the partial differential equations of linear elasticity. We subdivide the problem into two sub-problems posed on non-overlapping subdomains, each of them has boundary data that depends on the solution of the other subproblem. We determine the unknown data through an optimization problem in which the discrepancy between an appropriate defined functional of the difference between solutions in sub-domains is minimized. This article presents a new formulation of the minimum compliance problem based on the domain decomposition methods, and then we propose an algorithm to solve the founding problem.

Keywords: Topology optimization, sub-domains method, compliance, elastic structure, gradient method, finite element

Ijodir 2009 / Vol 4 n°2 - Analysis of decomposed topology optimization problem
2010-09-20  126.8 KB  1351

Analysis of dynamic contact inside the piezoelectric motor using the RBDO

Last Updated on Friday, 06 January 2012 12:43

Authors: A. Mohsine, B. Radi, and A. El Hami

Institutions: Ecole Polytechnique (France), F.S.T Errachidia (Morocco), INSA Rouen (France)

Abstract: In this paper, we present a study about the Reliability-Based Design Optimization analysis (RBDO) of the piezoelectric engines with travelling wave taking into account the dynamic contact between the different components (stator and rotor). Generally, the life of these motors is limited by important abrasion of the different components. So, the notion of random variables and the risk of failure must be integrated in the mechanical analysis to ensure the good working of the system. The numerical treatment of the dynamic contact is presented and discussion of two differents approachs about RBDO is given. The numerical tests show the efficiency of our proposed approach named dynamic hybrid method.

Keywords: Reliability analysis, Finite element analysis, Reliability-based design, Optimization, Dynamic contact

Ijodir 2009 / Vol 4 n°2 - Analysis of dynamic contact inside the piezoelectric motor using the RBDO
2010-09-20  0 B  1331

Modelling the Global Performance in the Total Quality Management Context

Last Updated on Friday, 06 January 2012 12:41

Authors: M. M. Dhiaf, R. Gautier and H. Chabchoub

Institutions: Université de Sfax (Tunisie), Arts et Metiers ParisTech, Paris (France)

Abstract: In this article, we propose a conceptual methodology of assessment and piloting of the global performance that operates in a Total Quality Management framework. The object is to clarify the fuzzy and contradictory relationship between global performance and TQM. The managerial literature doesn't have sharp and clear conclusion on the nature of this relationship. The present article can be considered as an attempt to clarify this relationship. Indeed, a conceptual model linking TQM practices and the global performance has been developed. Following a clear methodology based on a survey exploratory study involving 102 firms operating in Textile-clothing sector helped us to identify the nature of this relationship. Results have shown theexistence of a statistically positive relationship between the TQM practices and the global performance.

Keywords: TQM, Performance Globale, Modélisation, Analyse Factorielle, Equations Structurelles

Ijodir 2009 / Vol 4 n°2 - Modelling the Global Performance in the Total Quality Management Context
2010-09-20  128.65 KB  1052

Reliability modelling of mechanical components submitted to various operating conditions via a parametric model using Cox’s proportional hazard rate

Last Updated on Monday, 20 September 2010 11:04

Authors: P. Lyonnet, R. Toscano, P.L. Maisonneuve

Institutions: LTDS/ENISE (France)

Abstract: Within the framework of the data processing in exploitation, it is necessary to propose a model, which can be used to do the various traditional inferences of reliability. Very often the exponential law has been used for its simplicity. However, this model is not very representative of the lifetimes of mechanical components and does not take into account the various environmental conditions. The main objective of this work, is to complete classical models with a parametric function (Cox’s model). This method is developed and compared with the simplified models.

Keywords: Reliability mechanical, Cox’s model, parametric models.

Ijodir 2009 / Vol 4 n°2 - Reliability modelling of mechanical components submitted to various operating conditions
2010-09-20  81.76 KB  1016