GB/T 32967.1-2016 English PDF

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GB/T 32967.1-2016: Metallic materials -- Torsional test method at high strain rates -- Part 1: Method of test at room temperature
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Basic data

Standard ID: GB/T 32967.1-2016 (GB/T32967.1-2016)
Description (Translated English): Metallic materials -- Torsional test method at high strain rates -- Part 1: Method of test at room temperature
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: H22
Classification of International Standard: 77.040.10
Word Count Estimation: 25,292
Date of Issue: 2016-08-29
Date of Implementation: 2017-07-01
Regulation (derived from): National Standard Announcement 2016 No.14
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China

GB/T 32967.1-2016: Metallic materials -- Torsional test method at high strain rates -- Part 1: Method of test at room temperature

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Metallic materials - Torsional test method at high strain rates - Part 1. Method of test at room temperature ICS 77.040.10 H22 National Standards of People's Republic of China High strain rate torsion test for metallic materials Part 1. room temperature test method Part 1. Methodoftestatroomtemperature 2016-08-29 released 2017-07-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China China National Standardization Management Committee released Directory Preface III Introduction IV 1 Scope 1 2 normative reference document 1 3 Terms and definitions 1 4 symbols and instructions 2 5 test principle 4 6 Test equipment 5 7 Sample 6 8 Test procedure 7 9 Test Data Processing 8 Evaluation of the validity of the test results 11 Test Report 10 Appendix A (Normative Appendix) Separate Hopkinson Torsion Bar 11 Appendix B (Normative Appendix) Data Testing System Appendix C (informative) Method for determining the origin of incident, reflected and transmitted waves Appendix D (informative) Separate Hopkinson Torsion Test Method Data Processing Formula 16 Appendix E (informative) Metal material High strain rate Room temperature torsion test example 17

Foreword

"High Strain Rate Torsion Test for Metallic Materials" and GB/T 30069.1 "High Strain Rate Tensile Test for Metallic Materials Part 1 . Elastic rod type system "and GB/T 30069.2" High strain rate tensile test for metallic materials Part 2. Hydraulic servo and other tests Test system "together constitute the evaluation of materials under different stress conditions and strain rate conditions, the performance of the test method. GB/T 32967 "High strain rate torsion test of metal material" is divided into several parts, this part is part 1. This part is drafted in accordance with the rules given in GB/T 1.1-2009. This part is made by China Iron and Steel Industry Association. This part is headed by the National Steel Standardization Technical Committee (SAC/TC183). This part of the drafting unit. China Academy of Engineering Physics Institute of Engineering Engineering, Steel Research Nacker Detection Technology Co., Ltd., Taiyuan Science and Technology Science, University of Science and Technology of China, Northwestern Polytechnical University. The main drafters of this section. Xu Weifang, Gao Yifei, Hu Wenjun, Chen Gang, Zhao Longmao, Hu Shisheng, Guo Weiguo.

Introduction

Stamping, high-speed cutting and car collision and other structural impact process, the structure of the metal material is not only stress state complex, and change The higher the rate. In the complex stress state, the metal material is prone to shear deformation and failure, the shear stress - shear strain curve and other shear The mechanical properties of the metal are the key material parameters in the design and manufacture of metal structures. The metal structure is also carried out by numerical methods such as finite element method. Analysis and evaluation of indispensable basic data. The mechanical properties of many metal materials such as yield strength, flow stress, failure strain and other forces The characteristic of the strain shows the correlation of strain rate or strain rate. At this time the strain rate of up to 103s-1, much higher than the GB/T 10128 test side The rate of strain in the law (10-4s-1 ~ 10-2s-1). So that the high strain rate of the metallic material is obtained by the high strain rate torsion test method The shear mechanics is of great significance to the design, optimization, processing and evaluation of metal structures. The Hopkinson test technique is the main test method for studying the mechanical properties of materials at medium and high strain rate (≥102s-1) It is expected that the elastic stress wave propagating in the waveguide rods is responsible for the loading and testing functions. According to the information of the stress wave propagation in the waveguide rod, The stress-strain relationship between the rod and the end face of the specimen is obtained, and the stress-strain relationship of the specimen is obtained. By designing the loading pulse width, The process is in a local dynamic equilibrium state, so that the deformation analysis of the sample without considering the fluctuation effect, the stress wave effect and strain rate The rate effect is successfully decoupled. Metal materials in the strain rate range of 10-3s-1 ~ 102s-1 when the mechanical properties can be hydraulic or mechanical Test machine for testing. High strain rate torsion test for metallic materials Part 1. room temperature test method

1 Scope

This part of GB/T 32967 specifies the use of separate Hopkinson torsion bar for metal materials to carry out high strain rate torsion test Tests, Test Procedures, Test Data, Test Data Validation and Test Report And so on. This part is suitable for the shear stress-shear strain curve of metal materials at room temperature at 102s-1 ~ 103s-1 at the strain rate Determination of mechanical properties. Note. Other types can be applied with high strain rate shear loading test reference execution.

2 normative reference documents

The following documents are indispensable for the application of this document. For dated references, only the dated edition applies to this article Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB/T 1804 General tolerances Not tolerated by tolerances for linear and angular dimensions GB/T 2975 steel and steel products mechanical properties test sampling location and sample preparation Test method for room temperature torsion of metallic materials GB/T Test terminology for mechanical properties of metallic materials GB/T GB/T 13992 metal bonded strain gauges GB/T 30069.1 High strain rate tensile testing of metallic materials - Part 1. Elastic rod type systems JJG623 resistance strain gauge

3 terms and definitions

The following definitions and definitions as defined in GB/T 10623 apply to this document. 3.1 Stress wave The Propagation Form of Stress Disturbance in Medium. 3.2 Elastic stress wave Stress waves propagating in elastic media. 3.3 Elastic shear wave elasticshearwave The elastic stress wave propagating shear stress in the medium has its particle motion direction perpendicular to the wave propagation direction. 3.4 Wavefront wave interface The interface between the stress disturbance zone and the undisturbed region. ......

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