CEN TR 16303-1-2012 Road restraint systems - Guidelines for computational mechanics of crash testing against vehicle restraint system - Part 1 Common reference information and repo.pdf

1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationRoad restraint systems Guidelines for computationalmechanics of crash testingagainst vehicle restraint systemPart 1: Common reference information and reportingPD CEN/TR 16303-1:2

2、012National forewordThis Published Document is the UK implementation of CEN/TR 16303-1:2012.The UK participation in its preparation was entrusted by Technical CommitteeB/509, Road equipment, to Subcommittee B/509/1, Road restraint systems.A list of organizations represented on this committee can be

3、obtained onrequest to its secretary.This publication does not purport to include all the necessary provisions of acontract. Users are responsible for its correct application. The British Standards Institution 2012Published by BSI Standards Limited 2012ISBN 978 0 580 75310 7ICS 13.200; 93.080.30Compl

4、iance with a British Standard cannot confer immunity fromlegal obligations.This Published Document was published under the authority of theStandards Policy and Strategy Committee on 31 March 2012.Amendments issued since publicationAmd. No. Date Text affectedPUBLISHED DOCUMENTPD CEN/TR 16303-1:2012TE

5、CHNICAL REPORT RAPPORT TECHNIQUE TECHNISCHER BERICHT CEN/TR 16303-1 January 2012 ICS 13.200; 93.080.30 English Version Road restraint systems - Guidelines for computational mechanics of crash testing against vehicle restraint system - Part 1: Common reference information and reporting Dispositifs de

6、 retenue routiers - Recommandations pour la simulation numrique dessai de choc sur des dispositifs de retenue des vhicules - Partie 1: Information de rfrence commune et documentation Rckhaltesysteme an Straen - Richtlinien fr Computersimulationen von Anprallprfungen an Fahrzeug-Rckhaltesysteme - Tei

7、l 1: Allgemeine Informationen und Dokumentation This Technical Report was approved by CEN on 7 November 2011. 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, Fi

8、nland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUR

9、OPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. CEN/TR 16303-1:2012: EPD CEN/TR 16303-1:2012CEN/TR 16303-1:2012 (E) 2 Contents Page Foreword 3Introd

10、uction . 41 Scope 52 Normative references 53 Abbreviations . 54 Terms and definitions . 65 Guideline organization 66 General considerations on the modelling techniques . 77 Use and goals of guidelines . 7Bibliography 8PD CEN/TR 16303-1:2012CEN/TR 16303-1:2012 (E) 3 Foreword This document (CEN/TR 163

11、03-1:2012) 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 and/or CENELEC shall not be held responsible for ident

12、ifying any or all such patent rights. This document consists of this document divided in five Parts under the general title: Guidelines for Computational Mechanics of Crash Testing against Vehicle Restraint System: Part 1: Common reference information and reporting Part 2: Vehicle Modelling and Veri

13、fication Part 3: Test Item Modelling and Verification Part 4:Validation Procedures Part 5: Analyst Qualification11In preparation PD CEN/TR 16303-1:2012CEN/TR 16303-1:2012 (E) 4 Introduction In order to improve and maintain roads safety, the design of safer roads requires, on certain sections of road

14、 and at particular locations, the installation of road restraint systems. These road systems are designated to contain errant vehicles with a specified performance level and can provide guidance for pedestrians or other road users. The EN 1317 standard identifies test methods and impact test accepta

15、nce criteria that need to be met to demonstrate compliance with the essential requirements for CE marking. In some cases, computational mechanics can be used in addition to physical crash testing in the CE marking process. That is why it becomes necessary to develop a methodology to verify and valid

16、ate the result obtained with computational mechanics work and guarantee the reliability of the simulation itself. Furthermore Computation mechanics can provide support in real life situations that are not described within EN 1317. PD CEN/TR 16303-1:2012CEN/TR 16303-1:2012 (E) 5 1 Scope The focus of

17、this Technical Report will be on establishing accuracy, credibility and confidence in the results of crash test simulations to roadside safety devices through the definition of procedures for verification and validation in roadside safety application. This part is gives a general introduction and de

18、scribe the organisation of this document. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amend

19、ments) applies. EN 1317-1, Road restraint systems Part 1: Terminology and general criteria for test methods EN 1317-2, Road restraint systems Part 2: Performance classes, impact test acceptance criteria and test methods for safety barriers including vehicle parapets EN 1317-3, Road restraint systems

20、 Part 3: Performance classes, impact test acceptance criteria and test methods for crash cushions ENV 1317-4, Road restraint systems Part 4: Performance classes, impact test acceptance criteria and test methods for terminals and transitions of safety barriers EN 1317-5, Road restraint systems Part 5

21、: Product requirements and evaluation of conformity for vehicle restraint systems prEN 1317-8, Road restraint systems Part 8: Motorcycle road restraint systems which reduce the impact severity of motorcyclist collisions with safety barriers CEN/TR 16303-2:2011, Road restraint systems Guidelines for

22、Computational mechanics of crash testing against vehicle restraint system Part 2: Vehicle Modelling and Verification CEN/TR 16303-3:2011, Road restraint systems Guidelines for computational mechanics of crash testing against vehicle restraint system Part 3: Test Item Modelling and Verification CEN/T

23、R 16303-4:2011, Road restraint systems Guidelines for computational mechanics of crash testing against vehicle restraint system Part 4: Validation Procedures 3 Abbreviations ASI : Acceleration severity index CM/E: Computational Mechanics Europe COG: Center of gravity DD: Maximum dynamic deflection o

24、f the VRS FE: Finite element HGV Heavy goods vehicles MB: Multi-body PIRT: Phenomena importance ranking table THIV: Theoretical head impact velocity PD CEN/TR 16303-1:2012CEN/TR 16303-1:2012 (E) 6 VRS: Vehicle Restraint System 4 Terms and definitions For the purposes of this document, the following

25、terms and definitions apply. 4.1 model mathematical model of VRS and vehicles 4.2 simulation simulation performed using computational mechanics 4.3 test full-scale impact test performed at a test house according to specifications in relevant parts of EN 1317 4.4 test item product to be assessed usin

26、g simulation 4.5 validated model model of the VRS fulfilling acceptance criteria 4.6 validation simulation simulation performed to validate a model. The deviations between the results obtained in the simulation and the full-scale test should be within in CEN/TR 16303-4 defined acceptance criteria. 5

27、 Guideline organization This guideline presents specifications and requirements in order to use computer simulations for impact simulations of vehicle restraint systems according to EN 1317 and for other national application areas. The guideline consists of the following parts: Part 1: Common refere

28、nce information and reporting Part 2: Vehicle Modelling and Verification Part 3: Test Item Modelling and Verification Part 4: Validation and verification Procedures Part 5: Analyst Qualification This organization is made to follow the common methodology of computational mechanics for crash test anal

29、ysis. The models of the vehicle used in this field are generally limited and representative of a quite wide class of vehicle. When tested they can be used for different application with sufficient high grade of reliability; an informative roadmap, including validation tests, for the development of a

30、 vehicle for crash test analysis against PD CEN/TR 16303-1:2012CEN/TR 16303-1:2012 (E) 7 road restraint system is given in CEN/TR 16303-2, in addition a PIRT (phenomena importance ranking table) document that documents the capability of the major assemblies of vehicles is reported in CEN/TR 16303-2:

31、2011, Annexes D and E. The vehicle restraint system modelling guidelines are described in CEN/TR 16303-3 and its informative annex. It is important to document the capabilities of this system in order to assess what the model reasonably can be expected to predict. That is why a PIRT (phenomena impor

32、tance ranking table) document, similar to the one used for vehicle, is requested and other requirements are listed in CEN/TR 16303-3:2011, Annex C. In the end, once the model has been completely developed including the vehicle and the VRS the computer simulation performed shall be validated. This is

33、 the focus of the validation procedures in CEN/TR 16303-4. 6 General considerations on the modelling techniques Finite Element methodologies and rigid body (or multi-body) dynamic codes can be used in the simulation of crash scenario. Due to different requirements and different technical approaches

34、in modelling the two methods need a specific knowledge in the use of the software. These guidelines are in any case applicable for use on software where the background knowledge and experience is well-known. The software should be able to provide the tools that the user needs to correctly replicate

35、the full scale test and obtain consistent results. 7 Use and goals of guidelines Due to the complexity and the dimension of the issue, CME group took many years to firstly write some guidelines for computational mechanics of crash testing against vehicle restraint system. Different approaches were e

36、valuated and many consideration and tests conducted in order to have the knowledge suitable to write this guideline. The purpose is to guarantee the reliability and the correct engineering use of computational mechanics for this reason every computational simulation needs to be verified and validate

37、d. It is necessary to identify the process of determining that a computational model accurately represents the underlying mathematical model and its solution and determines the degree to which a model is an accurate representation of the real word from the perspective of the intended uses of the mod

38、el. This process involves comparing the computerized discrete numerical solution to known mathematical solutions and or real word or experiments. Validation, as used in this document, is the process of determining the degree to which a roadside safety computer model is an accurate representation of

39、the real world crash test from the representative of accurately replicating the EN 1317 crash test evaluation parameters, the structural performance of the barrier and the response of the vehicle. The primarily purpose of this guideline are concerning incremental improvements to VRS (modified produc

40、t). In this case, the model of the original test item shall be validated against test results before it can be used in impact simulations of a modified design. This is to ensure that the model is working properly and is capable of reproducing the tests within the allowed deviations according to CEN/

41、TR 16303-4. It is critical that validation simulations are clear, and ensure that the physics of the crash tests are captured by the simulations. The use of computational mechanics in the approval process for CE market of a test item is defined and regulated within EN 1317. That does not preclude th

42、e use of computational mechanics to the National Authorities for subjects not included in EN 1317. PD CEN/TR 16303-1:2012CEN/TR 16303-1:2012 (E) 8 Bibliography 1 prEN 1317-4, Road restraint systems Part 4: Performance classes, impact test acceptance criteria and test methods for transitions of safet

43、y barriers and Removable Barrier Section (under preparation) 2 prCEN/TR 1317-6, Road restraint systems Part 6: Pedestrian restraint system Pedestrian Parapets (under preparation) 3 prEN 1317-7, Road restraint systems Part 7: Performance classes, impact test acceptance criteria and test methods for t

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