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NEW INTEGRATED UPDATING TOOLS FOR TRANSPORTATION VEHICLE VIBRATION QUALITY IMPROVEMENT

Objective


The project intended to reach a very high level of technical achievements in the updating of finite element model and associated problems. All these expected achievements have been successfully attained or even exceeded.

- Validated procedures for pre-test analysis for further efficient updating compatible with standard test facilities have been established and used in several different industrial applications.

Integration of conventional measurement techniques (i.e. accelerometers) and recently developed holographic measurement techniques have been performed. The advantages of holographic data were demonstrated and successfully implemented in the software validation procedure.

- Validated procedures for final preparation and control of FEM models for an efficient further updating have been defined and applied in several different industrial applications.

- Improvement of present procedures for localization and updating combining several approaches have been obtained and used in several different context.

Dedicated procedures for equivalent modelling and model reduction have been developed, validated and used in several different contexts.

- The major achievement of development of a prototype dynamic analysis software with localization/updating capabilities enabling an automation of tasks for R and D, as well as design and analysis activities has been performed and intensively used for validation and assessment of methods in several industrial applications representative of automotive and railway industries.

The software code combined with efficient modeling techniques have allowed the end-users to perform efficient and successful updating of industrial models with more than 60 000 degree of freedom within a time frame on the order of the project goal of 15-20 days as compared to several months using the previous "trial by error" approach.
The proposed research is directed at developing methods and associated tools to improve the quality and reliability of FEM models used in the automotive and railway industries. An industrial prototype software code will be developed combining these new techniques within a single computing environment in order to efficiently handle large size models. Both general guidelines and problem-specific procedures will be added to allow for a systematic and optimal approach. The major research. The major research tasks are:

(i)Consolidation of general and systematic approaches for the preparation of FEM models and test structures in a model updating context;

(ii)Development of methods for performing parametric and topological updating of FEM models;

(iii)Development of a prototype dynamic analysis code implementing updating techniques;

(iv)Development of specific procedures for equivalent modelling and model reduction;

(v)Prototypevalidation on automotive and railway vehicles industrial applications;

(vi)Requirement specifications for the industrialization of the prototype code.

Successful completion should result in significant reduction in design and development cycles of car and railway vehicle structures.

Funding Scheme

CSC - Cost-sharing contracts

Coordinator

INTESPACE SA
Address
Avenue E Belin
31029 Toulouse
France

Participants (7)

BAYERISCHE MOTOREN WERKE AG (BMW)
Germany
Address

8000 München
IST
Portugal
Address
Av. Rovisco Pais
1096 Lisboa Codex
Peugeot SA
France
Address
Route De Gisy
78140 Vélizy-villacoublay
SOREFAME
Portugal
Address
P.o. Box 5
2701 Amadora Codex
UNIVERSIT DE FRANCHE-COMT
France
Address
Rue De L'epitaphe 24
25000 Besanton
University of Wales, Swansea
United Kingdom
Address
Singleton Park
SA2 8PP Swansea
Universität Gesamthochschule Kassel
Germany
Address
Mönchebergstraße 7
3500 Kassel