GS 36:2005

                                                                                              MOTOR VEHICLES  

                                                                       METHODS OF TEST FOR IMPACT STRENGTH  

                                                                                        PART 1: FRONTAL IMPACT 

                                                                             机动车冲击强度试验方法第1部分：正面冲击

l. SCOPE AND FIELD OF APPLICATION  

This standard is concerned with the method of test for the frontal impact strength of  passenger cars, multi-purpose passenger vehicles, trucks and buses.  

2. COMPLEMENTARY REFERENCES  

2.1 GS 37/2005 "Motor Vehicles Methods of Test for Impact Strength - Part 2: Moving  Barrier Rear Impact".  

2.2 GS 38-A/2005 "Motor Vehicles - Methods of Test for Impact Strength – Part 3A:  Side Impact".  

2.3 GS 38-Bl2005 "Motor Vehicles - Methods of Test for Impact Strength - Part 3B:  Moving Barrier Side Impact".  

2.4 GS 38-C/2005 "Motor Vehicles - Methods of Test for Impact Strength - Part 3C:  Moving Barrier Side Impact".  

2.5 GS 39/2005 "Motor Vehicles Methods of Test for Impact Strength - Part 4: Roof  Strength".  

2.6 GS 40/2005 "Motor Vehicles - Impact Strength".  

3. STEERING DISPLACEMENT TEST  

3.1 APPARATUS AND INSTRUMENTS  

3.1.1 Speed measuring device  It shall permit measurement of speed to an accuracy of (±1)% of its reading.  

3.1.2 Time measuring instrument It shall permit measurement of time to an accuracy of  (±0.001) second.  

3.1.3 Cinematographic camera Its speed shall be from 200 to 1000 images per second.  

3.1.4 Dimensions measuring device  It shall permit measurement of length to an accuracy (± 5)% of its reading.  

3.1.5 Impact barrier  It shall consist of a block of reinforced concrete of dimensions at least 3 m width, 1.5 m  height and 0.6 m thickness. Its face subjected to impact shall be flat, vertical and covered  with a metallic plate of at least 25 mm thickness, on which a plywood layer of (20 ± 2)  mm thickness is fitted. The effective mass of  the barrier shall not be less than 70 tonnes.

3.2 TEST CONDITIONS   

The following shall be met when carrying out the test of passenger cars multipurpose passenger vehicles, trucks and buses with GVW of 4500 kg or less and  with (unloaded vehicle weight of 2500 kg or less.)  

3.2.1 The test site shall be of sufficient area to provide the track and for  accommodation of the instrument. The last part of the track shall be even and,  straight for a distance at least 15 m from the impact barrier. It shall not slope  from the horizontal by more than 3˚ over any one metre length of the path of the  vehicle.  

3.2.2 The vehicle shall be loaded with the weights corresponding to the kerb load,  each standing in its specified place.  

3.2.3 The fuel shall be substituted by a non-flammable liquid having a density of  from 0.7 to 1.0 g/cm3 and filling 90-95 percent of the tank's capacity.  

3.2.4 The transmission arm shall be in neutral position.  

3.2.5 Adjustable steering controls shall be adjusted so that a tilting steering wheel  hub is at the geometric centre of the locus.  

3.2.6 A telescoping steering control shall be set at the adjustment position midway  between the forwardmost and rearwardmost positions.  

3.2.7 Doors shall be fully closed and latched but not locked.  

3.2.8 The parking brake shall be disengaged and the transmission is in neutral.  

3.2.9 Tyres shall be inflated to the vehicle manufacturer's specifications.  

3.2.10 The test conditions for the seats dummies and instruments are specified in  sections 4.1.4.3.11, 4.1.5 and 4.1.6.

3.3 TEST PROCEDURE   

The vehicle shall be moved to the impact barrier and the following shall be met:  

3.3.1 The longitudinal plane of the vehicle shall be perpendicular to the surface of the  impact barrier within ±2˚, and the lateral misalignment shall not exceed (±300)  mm.  

3.3.2 The speed of the vehicle shall be between 48.3 km/h and 53.1 km/h, at the  moment of impact.  

3.3.3 At the moment of impact, the vehicle shall be disconnected from any external  propulsion system.  

3.3.4 The displacement of the upper end of the steering column shall be measured  horizontally. rearward, and parallel to the longitudinal axis of the vehicle,  relative to an undisturbed point on the vehicle, which is not affected with the  impact.   In case the test is carried out at a speed greater than 48.3 km/h, the  displacement of the steering arm shall be corrected to 48.3 km/h by the  following formula:

未完。。。

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