ANSI ASME B31J-2017 Stress Intensification Factors (i-Factors) Flexibility Factors (k-Factors) and Their Determination for Metallic Piping Components.pdf
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1、Stress Intensification Factors (i-Factors), Flexibility Factors (k-Factors), and Their Determination for Metallic Piping ComponentsASME Code for Pressure Piping, B31AN AMERICAN NATIONAL STANDARDASME B31J-2017Revision of ASME B31J-2008 (R2013)ASME B31J-2017Revision of ASME B31J-2008 (R2013)Stress Int
2、ensification Factors (i-Factors), Flexibility Factors(k-Factors), and Their Determination for Metallic Piping ComponentsASME Code for Pressure Piping, B31AN AMERICAN NATIONAL STANDARDxDate of Issuance: June 16, 2017This Standard will be revised when the Society approves the issuance of a new edition
3、.ASME issues written replies to inquiries concerning interpretations of technical aspects of this Standard. Interpretations arepublished under http:/go.asme.org/Interpretations.Errata to codes and standards may be posted on the ASME Web site under the Committee Pages to provide corrections toincorre
4、ctlypublisheditems,ortocorrecttypographicalorgrammaticalerrorsincodesandstandards.Sucherratashallbeusedon the date posted.The B31 Committee Pages can be found at http:/go.asme.org/B31committee. The associated B31 Committee Pages for eachcode and standard can be accessed from this main page. There is
5、 an option available to automatically receive an e-mailnotification when errata are posted to a particular code or standard. This option can be found on the appropriateCommittee Page after selecting “Errata” in the “Publication Information” section.ASME is the registered trademark of The American So
6、ciety of Mechanical Engineers.ThiscodeorstandardwasdevelopedunderproceduresaccreditedasmeetingthecriteriaforAmericanNationalStandards.TheStandardsCommitteethatapprovedthecodeorstandardwasbalancedtoassurethatindividualsfromcompetentandconcernedinterestshavehadanopportunity to participate.The proposed
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8、s not take any position with respect to the validity of any patent rights asserted in connection with any items mentioned in thisdocument,anddoesnotundertaketoinsureanyoneutilizingastandardagainstliabilityforinfringementofanyapplicableletterspatent,norassumeanysuchliability.Usersofacodeorstandardare
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10、 this code or standard.ASME accepts responsibility for only those interpretations of this document issued in accordance with the established ASME proceduresand policies, which precludes the issuance of interpretations by individuals.No part of this document may be reproduced in any form, in an elect
11、ronicretrieval system or otherwise, without the prior written permission of thepublisher.The American Society of Mechanical EngineersTwo Park Avenue, New York, NY 10016-5990Copyright 2017 byTHE AMERICAN SOCIETY OF MECHANICAL ENGINEERSAll rights reservedPrinted in U.S.A.CONTENTSForeword . . . . . . .
12、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vCommittee Roster . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . viCorrespondence Wi
13、th the B31 Committee . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . viiIntroduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ix1 General . . . . . . .
14、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Document Contents . . . . . . . . . . . . .
15、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1Nonmandatory AppendicesA Stress Intensification Factor (SIF) Test Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17B Test Method for Determining Branch Connection Flexibility Factors
16、. . . . . . . . . . . . . . . . . . . . . 25C Use of Branch Connection Flexibility Factors in Piping System Analysis . . . . . . . . . . . . . . . . . . . 34D Sustained Load Test Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38Figures1-1 Or
17、ientations for Sketches 2.1 Through 2.6 of Table 1-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131-2 Orientations for Bends . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141-3 Branch Dimensions . . . . . . . . . . . . .
18、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141-4 Flexibility and Stress Intensification Factors for Bends and Miters . . . . . . . . . . . . . . . . . . . . . . 151-5 Flanged End Corrections for Bends and Miters . . . . . . . . . . . . . . . . . . . . . . .
19、 . . . . . . . . . . . . . 151-6 Flexibility Element Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 161-7 Fillet Weld Contours . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
20、A-1.1-1 Representative Cantilever Test Arrangements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17A-1.3-1 Displacement and Force or Moment Recorded During Loading and Unloading of a Test Specimen inBoth Positive and Negative Directions, With Linear Displacement . . . .
21、. . . . . . . . . . . . . . . . . 19B-1-1 Branch Connection Specimen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25B-1-2 Multiple k-Factor Tests on Single Assembled Position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26B-2-1 Ex
22、ample Flexibility Factor Branch Load Assembly Orientation . . . . . . . . . . . . . . . . . . . . . . . . . 27B-4.4-1 Detailed Beam Model for Through-Branch k-Factor Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29B-4.4-2 Beam Model . . . . . . . . . . . . . . . . . . . . . . . .
23、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29B-4.6-1 Load-Displacement Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31B-6-1 Unreinforced Branch Connection With (Left) and Without Ovalization Restraint Plate
24、s in Place . 32C-2-1 Rotational Stiffness Location Between Two Nodes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35C-2-2 Branch Connection In-Plane Direction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35C-2-3 Branch Connection Flexib
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