Road restraint systems - General requirements for the competence of laboratories performing virtual testing for the evaluation of vehicle restraint systems

This Technical Report gives guidance on principles and methods to determine the forces due to the collision of an errant vehicle with a vehicle restraint system (vrs) in bridge design and classify vehicle restraint systems with load.
This Technical Report specifies the general requirements for the competence to perform virtual testing in order to assess the performance of vehicle restraint systems. It covers virtual testing performed using finite element methods and multi-body methods.
This Technical Report is applicable to all organizations performing virtual testing dealing with vehicle restraint systems.
Laboratory customers, regulatory authorities and accreditation bodies may also use this Technical Report in confirming or recognizing the competence of laboratories.

Rückhaltesysteme an Straßen - Allgemeine Anforderungen an die Kompetenz von Laboratorien, die virtuelle Prüfungen zur Bewertung von Fahrzeugrückhaltesystemen durchführen

Dispositifs de retenue routiers - Exigences générales pour les laboratoires effectuant des essais virtuels pour l'évaluation des dispositifs de retenue pour véhicules

Oprema cest - Splošne zahteve za usposobljenost laboratorijev, ki izvajajo virtualno testiranje za vrednotenje sistemov za zadrževanje vozil

General Information

Status
Published
Publication Date
09-Dec-2024
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
20-Nov-2024
Due Date
25-Jan-2025
Completion Date
10-Dec-2024

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SLOVENSKI STANDARD
01-januar-2025
Oprema cest - Splošne zahteve za usposobljenost laboratorijev, ki izvajajo
virtualno testiranje za vrednotenje sistemov za zadrževanje vozil
Road restraint systems - General requirements for the competence of laboratories
performing virtual testing for the evaluation of vehicle restraint systems
Rückhaltesysteme an Straßen - Allgemeine Anforderungen an die Kompetenz von
Laboratorien, die virtuelle Prüfungen zur Bewertung von Fahrzeugrückhaltesystemen
durchführen
Dispositifs de retenue routiers - Exigences générales pour les laboratoires effectuant des
essais virtuels pour l'évaluation des dispositifs de retenue pour véhicules
Ta slovenski standard je istoveten z: CEN/TR 18186:2024
ICS:
13.200 Preprečevanje nesreč in Accident and disaster control
katastrof
93.080.30 Cestna oprema in pomožne Road equipment and
naprave installations
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

CEN/TR 18186
TECHNICAL REPORT
RAPPORT TECHNIQUE
November 2024
TECHNISCHER REPORT
ICS 13.200; 93.080.30
English Version
Road restraint systems - General requirements for the
competence of laboratories performing virtual testing for
the evaluation of vehicle restraint systems
Dispositifs de retenue routiers - Exigences générales Rückhaltesysteme an Straßen - Allgemeine
pour les laboratoires effectuant des essais virtuels Anforderungen an die Kompetenz von Laboratorien,
pour l'évaluation des dispositifs de retenue pour die virtuelle Prüfungen zur Bewertung von
véhicules Fahrzeugrückhaltesystemen durchführen

This Technical Report was approved by CEN on 13 October 2024. It has been drawn up by the Technical Committee CEN/TC 226.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2024 CEN All rights of exploitation in any form and by any means reserved Ref. No. CEN/TR 18186:2024 E
worldwide for CEN national Members.

Contents
European foreword . 3
Introduction . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Compatibility of EN ISO/IEC 17025:2017 with virtual testing activities . 7
Bibliography . 11

European foreword
This document (CEN/TR 18186:2024) has been prepared by Technical Committee CEN/TC 226 “Road
equipment”, the secretariat of which is held by AFNOR.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document is read in conjunction with:
— EN ISO/IEC 17025:2017
— EN 1317 (all parts)
— CEN/TS 1317-7:2023
— CEN/TS 1317-9:2023
— CEN/TR 1317-10:2023
— EN 16303:2020
— EN 12767:2019
— CEN/TR 16949:2016
— CEN/TS 17342:2019
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
Introduction
The CE marking procedure for road restraint systems involves the classification of those systems by
means of full-scale crash tests. Under certain conditions, defined in EN 1317-5:2007+A2:2012/AC:2012,
it is allowed to certify modified products via computational simulations of the normally required full scale
crash tests: virtual testing.
Virtual tests represent experimental tests which are carried on with numerical methods and calculators
instead of laboratory instrumentation. In mechanics and structural analysis fields, these virtual tests are
commonly carried on using finite element or multi-body codes developed for this purpose suited for
detailed study of a wide range of physical phenomena.
The degree of complexity of the phenomenon to be analysed requires an extreme specialization of the
calculation solver codes, which are generally developed to study a specific category of phenomena, and a
very delicate activity in developing the models to be solved by these codes.
The use of virtual testing for road restraint systems certification is described in the EN 16303:2020.
These tests are finite element or multi-body method computational simulations in which the crash test
of the vehicle against the restraint system is reproduced in all its details.
The development of finite element or multi-body models for crash analyses requires a thorough
knowledge of several disciplines ranging from continuum mechanics to the theory of finite element
methods with a background of general knowledge of impact mechanics. Such deep knowledge is at the
base of the skill required by operators in order to produce reliable analyses.
Virtual testing for design is usually supported by a physical test at the end of the design process while
virtual testing for certification substitutes the physical test. It is therefore necessary to verify that the
finite element or multi-body model is developed with the required skills, that the simulation is computed
with adequate software and that the results are collected and processed in a suitable manner.
For this reason, two main requirements are pointed out: the model needs to be reliable for the purpose
of certification by simulation and the operator needs to have all the required skills.
On the one hand the requirements on numerical models are well described within the EN 16303:2020,
but on the other hand a lack of standards dealing with the requirements on the operator is pointed out.
The objective of this document is to provide guidelines for the qualification of laboratories performing
virtual testing dealing with vehicle restraint systems. To avoid the misuse of this technique, the delivery
of such document is considered as priority.
This document is going to represent a step-by-step procedure to assess the capability of the laboratories
performing virtual testing dealing with vehicle restraint systems, to be used as reliable and safe part of
the standardization process. Therefore, the objective of this document, used in conjunction with
EN ISO/IEC 17025:2017, is to fill a gap in the standardization for the qualification of laboratories
performing virtual testing dealing with vehicle restraint systems.
This document is used in conjunction with EN ISO/IEC 17025:2017 and is giving a guideline to identify
requirements of EN ISO/IEC 17025:2017 that can be used for the accreditation to EN 16303:2020,
requirements of EN ISO/IEC 17025:2017 that cannot be used for the accreditation to EN 16303:2020 and
requirements of EN ISO/IEC 17025:2017 that can be used for the accreditation to EN 16303:2020 when
modified according to this document.
Accreditation to
...

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