Defining a Flexible Modeling Methodology for Design and Development of Automotive Powertrain Systems

Author(s):  
Mark Jennings ◽  
Michael Tiller ◽  
Kenneth R. Butts

Abstract In this paper we propose, through the use of modeling guidelines and architectures, a modeling methodology that facilitates model reuse throughout the automotive powertrain development process. The goal is to make efficient and timely use of engineering information that is generated during that process, especially in the powertrain design stage. Within this context, we present a modular model architecture and discuss four model-methodology user scenarios (Energy Usage/Management, Design Analysis, Controller Development, and Desktop Calibration). New model applications to support these user scenarios are introduced.

Author(s):  
Grant McSorley ◽  
Greg Huet ◽  
Stephen J. Culley ◽  
Clement Fortin

Due to their increasing responsibility for the total lifecycle costs associated with their products, manufacturers are investing increasingly more efforts in their reduction. One way in which this can be achieved is through the elimination at the design stage of possible in-service issues. This can be supported through the feedback of product in-use information obtained from testing, prototyping and in-service lifecycle stages towards the earlier stages of the development process. In order to facilitate the feedback of this information to design, the idea of complimentary product structures is introduced. The relationships between these structures provide a link between product information across the various lifecycle stages. The similarities between the product structure and the FMEA structure are also examined. As the FMEA organizes its information on a component basis, it is suggested that it provides an adequate basis for the organization of the product in-use information in order to facilitate its association with the product structure. Based on these ideas, a full framework for the feedback and reuse of product in-use information is described.


2019 ◽  
Vol 70 ◽  
pp. 04002 ◽  
Author(s):  
Svetlana Baluyan

The article presents the results of a study aimed at solving the problem of improving the quality of a language test. It was found that taking into account test takers’ individual characteristics that may affect their test performance, namely their personal characteristics, general and specific knowledge, language ability level and the emotional component at the design stage allows to increase reliability, interactiveness, impact, authenticity and even practicality of the test, which, in turn, contribute in its overall effectiveness.


2018 ◽  
Vol 8 (12) ◽  
pp. 2391 ◽  
Author(s):  
Christian Rivera ◽  
Javier Poza ◽  
Gaizka Ugalde ◽  
Gaizka Almandoz

The applications using electric motors have increased in the last decade. Some of these applications encounter the need for tailor-made motors that must meet demanding requirements. Therefore, the specification stage of an electric motor is a critical part of its development. If this stage is properly addressed, then future failures in the development process can be avoided. This paper presents a requirement engineering framework to support small-medium electric motors designers/manufacturers with the development of their product. The framework identifies the stakeholders and the tasks that they should undertake to finish a successful requirements specification stage. The framework is made from the designer/manufacturer’s perspective and it emphasizes the derivation of specialized requirements (lower-level). The result of the framework is well-defined requirements that form the design requirements specification of the motor that leads to the beginning of the design stage.


Author(s):  
Eliab Z. Opiyo

Numerous virtual and physical prototyping techniques have been developed in the past decades. These techniques are typically used for prototyping of products in the embodiment and detail design phases of the product development process, without taking into consideration the processes associated with products. These processes include sub-processes related to the operation of the products, interactivity of the product developer or the user with the product, and thinking and manipulative control of humans. The main challenge addressed in this paper is how to conceptualize and communicate ideas about products together with all accompanying processes. We have developed a new concept of abstract prototyping (AP), with the intent to enable the ideation and representation of products or systems as real life processes. In this paper, we present application case studies to demonstrate the applicability of this new concept of abstract prototyping. The preliminary results show that this is indeed the case and prove that process-focused abstract prototyping can be a useful new enabler for design communication. One of the major benefits of the proposed method over the competing approaches such as the application of VR solutions is that it provides a low-cost, but yet effective solution for the challenge of taking into consideration how the product will be used in user’s context or scenario at the very early design stage.


Author(s):  
Andrea Zanoni ◽  
Luca Conti ◽  
Pierangelo Masarati

In the context of a modern approach to the design of rotocraft, handling qualities should be the result of careful planning, rather than the output of a multitude of other choices, made primarily focusing on more immediate constraints. For a wide range of flight conditions and mission task elements, the test pilot feedback is the essential measure upon which the design choices are made. Thus, it is becoming of fundamental importance to be able to simulate a representative model of the vehicle in a pilot-in-the-loop environment as early as possible in the design stage. This work is intended to document the development process of one such system currently being realized at the facilities belonging to the Aerospace Science and Technology Department of Politecnico di Milano. Particular attention is given to the software architecture, based on the free and open-source multibody solver MBDyn. The development of a module specifically designed to exploit the environment visualization capabilities of FlightGear, also a free and open-source software, is presented.


Author(s):  
Claude Faidy

The objectives of this paper is to discuss technical harmonization of Nuclear Codes and Standards, based on French long experience in Codes and Standards used for design-fabrication and operation of nuclear components (mainly pressure retaining components). After a long period of use of ASME Section III code, during the Westinghouse licensing process, AFCEN (AREVA, EDF and the major manufacturers) decided to develop their own AFCEN French Codes. The 1st version has been issued in 1980 and the last one in 2007, completed by annual addendum. During more than 20 years the 2 Codes, RCCM and ASME Section III, have leave separately, with different constraints like industrial history, localisation of fabrication, more new plants in France than in USA, different R&D programs to support Code improvement… Recently a detailed review of differences for class 1 vessel has showed under a “general global quality equivalence”, a lot of differences in the Code development process, in the Code organization, in the scopes, in the State of the Art fulfillment, in ageing consideration at the design stage, in relation with national or international regulations, in term of standards used or complementary specification needs… The harmonization of Codes and Standards is possible under an important effort to move toward new ideas, more international rules and with a strong support of national safety authorities.


Author(s):  
Claude Faidy

The objectives of this paper is to discuss technical harmonization of Nuclear Codes and Standards, based on French long experience in Codes and Standards used for design-fabrication and operation of nuclear components (mainly pressure retaining components). After a long period of use of ASME Section III code, during the Westinghouse licensing process, AFCEN (AREVA, EDF and the major manufacturers) decided to develop their own AFCEN French Codes. The 1st version has been issued in 1980 and the last one in 2007, completed by annual addendum. During more than 20 years the 2 Codes, RCCM and ASME Section III, have left separately, with different constraints like industrial history, localization of fabrication, more new plants in France than in USA, different R&D programs to support Code improvement. Recently a detailed review of differences for class 1 vessel has shown under a “general global quality equivalence”, a lot of differences in the Code development process, in the Code organization, in the scopes, in the State of the Art fulfillment, in ageing consideration at the design stage, in relation with national or international regulations, in term of standards used or complementary specification needs. The harmonization of Codes and Standards is possible under an important effort to move toward new ideas, more international rules and with a strong support of national safety authorities.


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