1、 WORLDWIDE ENGINEERING STANDARDS Test Procedure GMW16889 Impact Bar Crush Can Static Load Test Copyright 2013 General Motors Company All Rights Reserved March 2013 Page 1 of 5 1 Scope Note: Nothing in this standard supercedes applicable laws and regulations. Note: In the event of conflict between th
2、e English and domestic language, the English language shall take precedence. 1.1 Purpose. To confirm at a component level that the impact bar crush cans meet the peak force requirement specified in the program specific Subsystem Technical Specifications (SSTS). 1.2 Foreword. Not applicable. 1.3 Appl
3、icability. All impact bar assemblies with crush cans. Figure 1 is an example of an impact bar assembly with crush cans. Figure 1: Example of Impact Bar Assembly with Crush Cans 2 References Note: Only the latest approved standards are applicable unless otherwise specified. 2.1 External Standards/Spe
4、cifications. None 2.2 GM Standards/Specifications. None 3 Resources 3.1 Facilities. 3.1.1 Calibration. The test facilities and equipment shall be in good working order and shall have a valid calibration label. 3.1.2 Alternatives. Alternative test facilities and equipment may also be used. However, a
5、ll measuring variables as specified in this standard shall be determined correctly with respect to their physical definition. 3.2 Equipment. The following items are typically required to perform this test. Other equipment may be substituted at the discretion of the testing facility as long as it pro
6、vides the same data with equivalent accuracy and is approved by the requesting design engineer (DE) and validation engineer (VE). Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,
7、-,-GM WORLDWIDE ENGINEERING STANDARDS GMW16889 Copyright 2013 General Motors Company All Rights Reserved March 2013 Page 2 of 5 3.2.1 Compression Testing Machine. A compression testing machine with a minimum load capacity of 250 kN and the ability to measure and record force in Newtons (N) and displ
8、acement in millimeters (mm). 3.2.2 Fixture. A fixture that is secured directly to the bed plate of the compression testing machine in order to prevent the crush can from moving in the x and y-axis directions. This fixture is to replicate the mounting attachment to the vehicle. Figure 2 is an example
9、 of the test setup, which includes a picture of a typical fixture used for this test. Figure 2: Test Setup Example 3.3 Test Vehicle/Test Piece. This test is required as part of design and product validation, with timing to be coordinated by the DE and VE. 3.4 Test Time. Assumption of three front and
10、 three rear crush can samples. Calendar time: 2 days Test hours: 8 hours Coordination hours: 8 hours 3.5 Test Required Information. Not applicable. 3.6 Personnel/Skills. Prior experience in setting up and running similar tests and experience in the use of the referenced test equipment are critical t
11、o achieving the estimated times shown in 3.4. 4 Procedure 4.1 Preparation. The crush can is to be constrained to the bed plate of the test machine using a fixture per paragraph 3.2.2. 4.2 Conditions. 4.2.1 Environmental Conditions. This test is to be conducted at ambient temperature, 23 C 5 C. 4.2.2
12、 Test Conditions. Deviations from the requirements of this standard shall have been agreed upon. Such requirements shall be specified on component drawings, test certificates, reports, etc. 4.3 Instructions. 4.3.1 The crush can shall be supported per 4.1. 4.3.2 The crush can shall be compressed at a
13、 rate of 50 mm/minute until the sample has been completely crushed. 5 Data 5.1 Calculations. Not applicable. Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGIN
14、EERING STANDARDS GMW16889 Copyright 2013 General Motors Company All Rights Reserved March 2013 Page 3 of 5 5.2 Interpretation of Results. Not applicable. 5.3 Test Documentation. 5.3.1 The maximum displacement (mm) and peak force (N) required to completely crush the can are to be recorded in a chart
15、similar to Data Sheet A1 in Appendix A. 5.3.2 A displacement (x-axis) versus force (y-axis) graph is required for each sample. Figure 3 includes an example of a displacement versus force graph included as part of the test report. Figure 3: Displacement vs. Force Graph Example 5.3.3 The results of th
16、e measurements, including force versus displacement graphs for each part, shall be presented in a test report. 6 Safety This standard may involve hazardous materials, operations, and equipment. This standard does not propose to address all the safety problems associated with its use. It is the respo
17、nsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. 7 Notes 7.1 Glossary. Not applicable. 7.2 Acronyms, Abbreviations, and Symbols. DE Design Engineer mm Millimeter N Newton SSTS Subsystem
18、 Technical Specifications VE Validation Engineer 8 Coding System This standard shall be referenced in other documents, drawings, etc., as follows: Test to GMW16889 Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking pe
19、rmitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW16889 Copyright 2013 General Motors Company All Rights Reserved March 2013 Page 4 of 5 9 Release and Revisions This standard was originated in November 2012. It was first approved by the Bumper, Fascia, and Grilles Global Sub
20、system Leadership Team in March 2013. It was first published in March 2013. Issue Publication Date Description (Organization) 1 MAR 2013 Initial publication. Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitte
21、d without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW16889 Copyright 2013 General Motors Company All Rights Reserved March 2013 Page 5 of 5 Appendix A Data Sheet A1: Test Data Vehicle Make: Model: Model Year: Part Number: Report Number: Date: Test Requester: Test Engineer: Sample No. Front or Rear Peak Force (N) Maximum Displacement (mm) Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
