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GB/T 23663-2020 English PDF (GB/T 23663-2009)

GB/T 23663-2020_English: PDF (GB/T23663-2020)
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GB/T 23663-2020English170 Add to Cart 0--9 seconds. Auto-delivery Test method for longitudinal and lateral stiffness of motor vehicle tyres Valid GB/T 23663-2020
GB/T 23663-2009English319 Add to Cart 3 days [Need to translate] Test method of automobile tyre longitudinal and lateral stiffness Obsolete GB/T 23663-2009


BASIC DATA
Standard ID GB/T 23663-2020 (GB/T23663-2020)
Description (Translated English) Test method for longitudinal and lateral stiffness of motor vehicle tyres
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard G41
Classification of International Standard 83.160.10
Word Count Estimation 9,945
Date of Issue 2020-12-14
Date of Implementation 2021-11-01
Older Standard (superseded by this standard) GB/T 23663-2009
Quoted Standard GB/T 6326; GB/T 8170; GB/T 12549
Drafting Organization Qingdao Product Quality Supervision and Inspection Institute
Administrative Organization National Tire and Rim Standardization Technical Committee Automobile Industry and Agricultural Machinery Tire and Rim Branch
Regulation (derived from) National Standard Announcement No. 28 of 2020
Proposing organization China Petroleum and Chemical Industry Federation
Issuing agency(ies) State Administration for Market Regulation, National Standardization Administration
Summary This standard specifies the terms and definitions, test equipment and accuracy requirements, test conditions, test procedures and test reports for the longitudinal and transverse rigidity test of static automobile tires under measurement load. This standard applies to all car radial tires and truck radial tires.

BASIC DATA
Standard ID GB/T 23663-2009 (GB/T23663-2009)
Description (Translated English) Test method of automobile tyre longitudinal and lateral stiffness
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard G41
Classification of International Standard 83.160.10
Word Count Estimation 8,837
Date of Issue 2009-04-24
Date of Implementation 2009-12-01
Drafting Organization Qingdao City Product Quality Supervision and Inspection
Administrative Organization National Standardization Technical Committee tire rim
Regulation (derived from) PRC National Standard Approval Announcement 2009 No.6 (Total No.146)
Proposing organization China Petroleum and Chemical Industry Association
Issuing agency(ies) Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China; Standardization Administration of China
Summary This standard specifies the vertical and horizontal rigidity car tire test methods terminology and definitions, test records, test equipment and precision, test conditions, test procedure, numerical rounding. This standard applies to all passenger car radial tires and light truck radial tires.


GB/T 23663-2020 NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 83.160.10 G 41 Replacing GB/T 23663-2009 Test method for longitudinal and lateral stiffness of motor vehicle tyres ISSUED ON: DECEMBER 14, 2020 IMPLEMENTED ON: NOVEMBER 01, 2021 Issued by: State Administration for Market Regulation; Standardization Administration of the People’s Republic of China. Table of Contents Foreword ... 3  1 Scope ... 5  2 Normative references ... 5  3 Terms and definitions... 5  4 Test equipment and its accuracy requirements ... 6  5 Test conditions ... 7  6 Test steps ... 8  7 Test report ... 12  References ... 14  Test method for longitudinal and lateral stiffness of motor vehicle tyres 1 Scope This Standard specifies the terms and definitions, test equipment and its accuracy requirements, test conditions, test procedures and test reports for the test of longitudinal and lateral stiffness of static motor vehicle tyres under load. This Standard applies to all passenger car radial tyres and truck radial tyres. 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 amendments) applies. GB/T 6326, Tyre terms and definitions GB/T 8170, Rules of rounding off for numerical values & expression and judgment of limiting values GB/T 12549, Terms and Definitions for Vehicle Controllability and Stability 3 Terms and definitions Terms and definitions determined by GB/T 6326 and GB/T 12549, as well as the following ones, are applicable to this document. 3.1 Experimental equipment A device that is capable of loading tyres and producing relative motion between the tyre and the contact platform. 3.2 Contact platform A non-smooth rigid platforms of different roughness which is installed on the experimental equipment to simulate different road surfaces. 3.3 4.1.4.1 The contact platform shall completely accommodate the entire part in contact with the tyre; the contact platform stroke shall be able to meet the test requirements. 4.1.4.2 The contact platform and its supporting structure shall have sufficient stiffness to ensure that when the loading device exerts a vertical force on the tyre, the platform shall not be deformed in the lateral, longitudinal and bending aspects. 4.1.4.3 The contact platform shall have sufficient roughness. 4.2 Accuracy requirements of test equipment 4.2.1 The angle between the vertical loading direction and the contact platform of the experimental equipment is 90°; the deviation is not more than 0.05°. 4.2.2 The accuracy of vertical force, longitudinal force and lateral force loading device is ±1.0% of full scale. 4.2.3 The accuracy of vertical displacement, longitudinal displacement and lateral displacement is ±0.5 mm. 4.2.4 The accuracy of vertical movement speed is ±2.5 mm/min. 4.2.5 The maximum range of the inflation pressure gauge for passenger car tyres is at least 500 kPa, and the accuracy is ±5 kPa; the maximum range of the inflation pressure gauge for truck tyres is at least 1 000 kPa, and the accuracy is ±10 kPa. 5 Test conditions 5.1 The tested tyres shall be parked for more than 24 h after vulcanization and before assembly. 5.2 The test rim should be the measurement rim specified in GB/T 2977 or GB/T 2978. Before installation, ensure that the bead seat and the mating surface of the tyre are clean and dry; it is not allowed to apply lubricants and other lubricating materials for the convenience of assembly. 5.3 The test load should be the maximum load of the tyre (when there are two conditions of use for single and double tyres, use the single tyre load). 5.4 Inflate the passenger car tyres with the air pressure specified in Table 1. Inflate the truck tyres with the air pressure corresponding to the maximum load. If agreed, it may be stipulated otherwise. Table 1 – Inflation pressure for longitudinal and lateral stiffness test of passenger car tyres in kilopascals Where: a1 – longitudinal stiffness, in Newtons per millimeter (N/mm); y – longitudinal force, in Newtons (N); x – longitudinal displacement, in millimeters (mm). 6.1.5 The longitudinal stiffness result is accurate to one decimal place; the longitudinal force is accurate to an integer place; the longitudinal displacement is accurate to two decimal places. The measurement and calculation results are rounded according to provisions of GB/T 8170. 6.1.6 Unload and adjust the air pressure to the specified value. 6.1.7 Repeat the process of 6.1.1 ~ 6.1.5, in which steps 6.1.1 and 6.1.2 are loaded to the maximum load of the tyre. 6.1.8 Repeat the process of 6.1.1 ~ 6.1.5, in which steps 6.1.1 and 6.1.2 are loaded to 120% of the maximum load of the tyre. Note: When necessary, the test can be carried out according to the vertical loading load different from the above. 6.2 Lateral stiffness test 6.2.1 Install the test tyre rim assembly on the corresponding test device and lock it. Apply a vertical force to the tyre at a speed of 50 mm/min; load it to 80% of the maximum load of the tyre; keep it for 5 s and then unload. Repeat the pre-test 3 times; adjust the tyre pressure to the specified value of 5.4 after the pre-test. 6.2.2 Apply a vertical force to the tyre at a speed of 50 mm/min; load it to 80% of the maximum load of the tyre; keep it for 1 min. 6.2.3 Move the contact platform along the Y' axis; the moving speed of the contact platform shall be 30 mm/min ~ 50 mm/min, until relative sliding occurs between the contact platform and the tyre or the maximum travel of the contact platform is reached. Take the lateral displacement as the abscissa and the lateral force as the ordinate, to draw the lateral force-lateral displacement curve. 6.2.4 The lateral stiffness is calculated according to Method A or Method B: 1) Method A Calculate according to Formula (8): ......


GB/T 23663-2009 Test method of automobile tyre longitudinal and lateral stiffness ICS 83.160.10 G41 National Standards of People's Republic of China Car tire longitudinal and lateral stiffness test method Posted 2009-04-24 2009-12-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released Foreword The standard proposed by China Petroleum and Chemical Industry Association. The standard tire rim by the National Standardization Technical Committee (SAC/TC19) centralized. Drafting of this standard. Qingdao City Product Quality Supervision and Inspection, Guangzhou South China Rubber Tire Co., Ltd., Shandong Linglong Rubber Ltd., Hangzhou Zhongce Rubber Co., Ltd., Beijing Rubber Industry Research and Design Institute, Double Coin Holdings Ltd., Qingdao monitoring technology Universities Surgery Ltd., Shantou huge tire testing equipment co. The main drafters of this standard. He Ning, Wang Bo, Chen Jianguo, TENG Li Ran, Chen Guohua, Xu Lihong, new Yao, Liu, Chen Xun. Car tire longitudinal and lateral stiffness test method 1 Scope This standard specifies the car tire longitudinal and lateral stiffness of the terms and definitions - Test methods, test equipment and precision test strips Parts, test procedures, numerical rounding, test records. This standard applies to all passenger car radial tires and radial light truck tires. 2 Normative references The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research Whether the latest versions of these documents, undated reference documents, the latest versions apply to this standard. GB/T 2977 truck tire specifications, size, pressure and load GB/T 2978 car tire specifications, size, pressure and load GB/T 6326 tires terms and definitions (GB/T 6326-2005, ISO 4223-1.2002, Definitionsofsometerms usedintyreindustry-Part 1. Pneumatictyres, NEQ) GB/T 8170 repair value expressed about the rules and limit values \u200b\u200band judgment 3 Terms and Definitions Terminology and definitions The following terms and definitions GB/T 6326 established in this standard applies. 3.1 It can simulate different road, having a non-smooth platform with different roughness. 3.2 F z Tire force acting on the test stand in the vertical direction (Figure 1). 3.3 F x0 Acting on a tire test bed x0 force parallel to the axis, shown in Figure 1. 3.4 δ x0 In the role of tire longitudinal force relative to the parallel test station offset in x0 axis. 3.5 L x0 The ratio of the longitudinal force and the increment of longitudinal displacement increment. ......

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