CN106383016B - A kind of vehicle side collision simulation test structure and its test method - Google Patents
A kind of vehicle side collision simulation test structure and its test method Download PDFInfo
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- CN106383016B CN106383016B CN201610695279.9A CN201610695279A CN106383016B CN 106383016 B CN106383016 B CN 106383016B CN 201610695279 A CN201610695279 A CN 201610695279A CN 106383016 B CN106383016 B CN 106383016B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/08—Shock-testing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
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Abstract
The present invention relates to a kind of vehicle side collision simulation test structure and its test methods, including acceleration slide unit, slide unit track and white body, it is characterized by: before white body bottom correspondence should be set, the position of rear axle is respectively equipped with support plate, crossbeam is connected between support plate, crossbeam sliding is arranged in above slide unit track and white body bottom is parallel to the horizontal plane, the close acceleration slide unit end of support plate and slide unit parallel track and support plate is utilized respectively rope and is connected with braking mechanism, bullet vehicle is additionally provided on slide unit track between acceleration slide unit and white body, the counterweight for adjusting the centroid position on vehicle mass and vehicle vertical direction is had additional in white body and in support plate, white body installs vehicle door interior trim part in collision side according to test requirements document, seat and crash tests dummy.Can more accurately simulating vehicle side collision process, can especially be directed to a variety of regulations, substandard vehicle side collision test form, be conducive to the research and development of passive security product.
Description
Technical field
The present invention relates to technical field of vehicle safety, and in particular to a kind of vehicle side collision simulation test structure and its survey
Method for testing.
Background technique
In vehicle passive safety exploitation, to carry out vehicle side collision usually using acceleration slide unit, deceleration slide unit
Simulation is come by the simulation to vehicular sideview structure deflection or intrusion volume, deformation velocity or intrusion speed in impact test
Realize the simulation to vehicle side collision, this method is that automobile body is carried out segmentation cutting, every using some energy-absorbing materials
The simulation that a part charge carries out intrusion volume, invades speed, meanwhile, also by the movement of seat and phase with vehicular sideview structure
Movement is simulated, this generally uses deceleration slide unit to be simulated, and this mode needs to carry out a large amount of rating tests could be complete
At primary efficiency test.Alternatively, further simplifying, the opposite fortune of white body side structure and seat between the two is only simulated
It is dynamic, side collision to be simulated, this generally uses acceleration slide unit to be simulated, this is even more a kind of very coarse method,
Because not carrying out any simulation to the intrusion volume of side, intrusion speed, the result of this and actual tests differs greatly.
Meanwhile the side collision of vehicle is researched and developed, there are numerous forms of collision, such as mobile deformable obstacle
(MDB-Moving Deformation Barrier), lateral column touch, chinese national standard, European directive, NCAP of China, Europe
NCAP, Unite States Standard etc., above-mentioned traditional side model configuration will not can be effectively carried out simulation, be the great of research and development of products
Obstacle.In addition, automobile factory in vehicle development early period, in no complete automobile collision test data, can not verify and determine vehicle
Whether the crashworthiness characteristic of side body structure can meet the requirements, and need to carry out complete automobile collision test, so opening in formal vehicle body
Before mold, production experimental model is carried out using a large amount of Quick-forming parts, soft mode part, and the sample car of this stage vehicle grade is very
Expensive.
Summary of the invention
It, being capable of more accurately simulating vehicle side collision the purpose of the invention is to provide one kind to solve the above problems
Process, especially can be for a variety of regulations, the vehicle side collision simulation test of substandard vehicle side collision test form
Structure and its test method are conducive to the research and development of passive security product to realize to the accurate simulation of vehicle side collision.
The technical scheme is that
A kind of vehicle side collision simulation test structure, including acceleration slide unit, slide unit track and white body, feature exist
In: the position that white body bottom correspondence should set axle is respectively equipped with support plate, is connected with and slides between the support plate
The vertical crossbeam of platform track, the crossbeam sliding are arranged in above slide unit track and white body bottom are parallel to the horizontal plane, institute
The close acceleration slide unit end for stating support plate and slide unit parallel track and support plate is utilized respectively rope and is connected with braking mechanism, institute
State the normal direction friction that braking mechanism simulates tire and ground when real vehicles are collided by rope transmitting tractive force to support plate
Power, is additionally provided with bullet vehicle on the slide unit track between the acceleration slide unit and white body, in the white body and in support plate
Have additional the counterweight for adjusting the centroid position on vehicle mass and vehicle vertical direction, the close white body of the bullet vehicle
End is equipped with collision execution unit, and the white body is surveyed according to test requirements document in collision side installation vehicle door interior trim part, seat and collision
Try dummy.
Above-mentioned vehicle side collision simulation test structure, the bullet vehicle are the vertical bullet vehicle of MDB or MDB angle bullet
Vehicle or column touch bullet vehicle.
Above-mentioned vehicle side collision simulation test structure, the bullet vehicle are an integral structure with acceleration slide unit.
Above-mentioned vehicle side collision simulation test structure, the bullet vehicle and acceleration slide unit are split type structure.
Above-mentioned vehicle side collision simulation test structure, the collision execution unit are that bee is used in height-adjustable test
Nest aluminium.
Above-mentioned vehicle side collision simulation test structure, the collision execution unit are collision column.
The test method of above-mentioned vehicle side collision simulation test structure, it is characterised in that: straight using acceleration slide unit
It connects and bullet vehicle is accelerated into test speed, hit with white body side, by carrying out counterweight, external brake to white body
Mechanism carrys out simulating vehicle and the side sliding after side collision occurs, wherein the braking mechanism transmits tractive force by rope and gives
The normal direction frictional force of tire and ground, described to reach real vehicles quality with being reused in when support plate is to simulate real vehicles collision
With the adjustment of the centroid position in vehicle vertical direction, in collision process, white body side structure deforms, and leads to side
Structure is invaded into crew module, to realize the simulation test to vehicle side collision intrusion volume, intrusion speed.
Above-mentioned test method, the bullet vehicle are that the vertical bullet vehicle of MDB or MDB angle bullet vehicle, the MDB are vertically sub
It plays vehicle or MDB angle bullet vehicle and acceleration slide unit is split type structure, the vertical bullet vehicle of the MDB or MDB angle bullet vehicle
Setting speed is accelerated under the promotion of acceleration slide unit, acceleration slide unit brakes bullet vehicle vertical with MDB or MDB angle bullet vehicle
The quality and speed of separation, the vertical bullet vehicle of the MDB or MDB angle bullet vehicle are set by related vehicle impact standards
Fixed, the vertical bullet vehicle of the MDB or MDB angle bullet vehicle are run on slide unit track, finally with white body sideways collisions,
Then white body sliding speed is gradually increased, and the sliding speed of the vertical bullet vehicle of MDB or MDB angle bullet vehicle gradually decreases, when white
The sliding speed of vehicle body bullet vehicle vertical with the MDB or MDB angle bullet vehicle speed that reaches unanimity or both is differed in setting error
When in range, the vertical bullet vehicle of MDB or MDB angle bullet vehicle are braked rapidly, avoid that secondary collision occurs with white body.
Above-mentioned test method, the bullet vehicle are that column touches bullet vehicle, and the column touches bullet vehicle and acceleration slide unit is one
Body formula structure, the column touches bullet vehicle and accelerates to setting impact velocity under the promotion of acceleration slide unit and remain unchanged, in slide unit
Run on track and do not separated with acceleration slide unit, the column touch bullet vehicle finally with white body sideways collisions, then white vehicle
Body sliding speed is gradually increased, when white body and the sliding speed that column touches bullet the vehicle speed that reaches unanimity or both are differed and set
When in error range, column touches bullet vehicle and brakes rapidly, avoids that secondary collision occurs with white body.
The beneficial effects of the present invention are: by carrying out counterweight and external braking mechanism to white body come simulating vehicle generation
Side sliding after side collision, wherein braking mechanism transmits tractive force by rope and touched to support plate with simulating real vehicles
The normal direction frictional force of tire and ground when hitting reaches real vehicles quality and to the mass center position in vehicle vertical direction with being reused in
The adjustment set.Vehicular sideview deformation state when further to true vehicle impact test is suitable for various forms of sides
Collision, to improve the accuracy of the exploitation of vehicle passive safety, test efficiency is high, to the simulation of the collision characteristic of vehicular sideview by
Vehicle itself determines.In addition, avoid being tested using very expensive test vehicle by carrying out counterweight to white body,
The test effect collided close to real vehicles can be obtained, development cost is saved.
Detailed description of the invention
Fig. 1 is the top view of the side MDB normal impact of the invention (China or European directive) simulation；
Fig. 2 is the side view of the side MDB normal impact of the invention (China or European directive) simulation；
Fig. 3 is the schematic diagram in the direction of tire and ground friction coefficient；
Fig. 4 is that MDB band angle side collision (Unite States Standard) of the invention simulates schematic diagram；
Fig. 5 is the brake logic schematic diagram of side collision of the invention；
Fig. 6 is that Flank Pole of the invention touches simulation (Euro-NCAP) schematic diagram；
Fig. 7 is the brake logic schematic diagram that Flank Pole of the invention touches simulation.
In figure: 1- slide unit track, the vertical bullet vehicle of 2-MDB, 3- honeycomb aluminum, 4- braking mechanism, 5- rope, 6- support plate,
7- crossbeam, 8- white body, 9-MDB angle bullet vehicle, 10- acceleration slide unit, 11- column touch bullet vehicle.
Specific embodiment
Embodiment 1
As shown in Figure 1 and Figure 2, the vehicle side collision simulation test structure, including acceleration slide unit 10,1 and of slide unit track
White body 8, the position that the 8 bottom correspondence of white body should set axle are respectively equipped with support plate 6, connect between the support plate 6
Be connected to the crossbeam 7 vertical with slide unit track 1, the sliding of crossbeam 7 be arranged in 1 top of slide unit track and make 8 bottom of white body with
Horizontal plane is parallel, and white body 8 and the position of support plate 6 being fixed to each other and the vehicle body of actual vehicle and chassis system are joining
Position consistency.The support plate 6 is parallel with slide unit track 1 and close 10 end of acceleration slide unit of support plate 6 is utilized respectively rope 5
It is connected with braking mechanism 4, rope 5 is parallel with slide unit track 1, and the braking mechanism 4 transmits tractive force to support plate by rope 5
6 to simulate real vehicles collision when tire and ground normal direction frictional force, cunning between the acceleration slide unit 10 and white body 8
It is additionally provided with bullet vehicle on platform track 1, has additional in the white body 8 and in support plate 6 and hang down for adjusting vehicle mass and vehicle
The counterweight of the upward centroid position of histogram, 8 end of close white body of the bullet vehicle are equipped with collision execution unit, the white body
8 install vehicle door interior trim part, seat and crash tests dummy in collision side according to test requirements document.
In the present embodiment, the bullet vehicle is the vertical bullet vehicle 2 of MDB, the vertical bullet vehicle 2 of the MDB and acceleration slide unit
10 be split type structure, and the collision execution unit is height-adjustable test honeycomb aluminum 3.
Test method:
The vertical bullet vehicle 2 of MDB is directly accelerated into test speed (setting speed 50km/h) using acceleration slide unit 10,
Acceleration slide unit 10 is braked vertical with MDB bullet vehicle 2 and is separated, involved in the quality and speed of the vertical bullet vehicle 2 of the MDB are pressed
Vehicle impact standards are set, consistent with MDB (Moving Deforming Barrier) required in standard.It is described
The vertical bullet vehicle 2 of MDB is run on slide unit track 1, finally with 8 sideways collisions of white body, then 8 sliding speed of white body by
It gradually improves, the sliding speed of the vertical bullet vehicle 2 of MDB gradually decreases, when the sliding speed of the bullet vehicle 2 vertical with MDB of white body 8 becomes
In consistent or both speed difference when setting in error range, the vertical braking rapidly of bullet vehicle 2 of MDB avoids sending out with white body 8
Raw secondary collision.Come simulating vehicle side collision occurs for this method by carrying out counterweight, external braking mechanism 4 to white body 8
Side sliding afterwards, wherein the braking mechanism 4 transmits tractive force by rope 5 and simulates real vehicles collision to support plate 6
When tire and ground normal direction frictional force, it is described with being reused in the mass center position reached in real vehicles quality and vehicle vertical direction
The adjustment set, in collision process, 8 side structure of white body deforms, and side structure is caused to invade into crew module, thus
Realize the simulation test to vehicle side collision intrusion volume, intrusion speed.
Wherein, braking mechanism 4 is can to set tractive force when discharging rope 5, in specific test, set traction
Power can be the frictional force on actual wheel and ground, can also be obtained through actual measurement, and can also be obtained by calculating, it may be assumed that
Front axle FTractive force=NFront axle surveys weight*μTire and ground friction coefficient
Rear axle FTractive force=NRear axle surveys weight*μTire and ground friction coefficient
Wherein μTire and ground friction coefficientDirection referring to Fig. 3.
So when performing a test, the vertical bullet vehicle 2 of MDB, by quality set by standard, speed and direction dialogue
Vehicle body 8 is collided, and front axle and rear axle F tractive force simulate tire and ground normal direction frictional force, to be truly reflected out white vehicle
The collision characteristic of 8 side structure of body simulates the intrusion volume of crew module, intrusion speed, simultaneously because support plate 6 can be put down
Face sliding, generally, the centroid position of vehicle axis to the front, so not holding any government official post's vehicle 8 can accurately reflect in collision process sliding gesture
Out.
Embodiment 2
As shown in figure 4, the bullet vehicle is MDB angle bullet vehicle 9.For the simulation of side impact with angle, with the U.S.
For standard FMVSS 214, MDB angle bullet vehicle 9 is with angled, equally, MDB angle bullet vehicle 9 according to standard define into
Row counterweight, the symmetrical center line of white body 8 and the symmetrical center line of acceleration slide unit 10 are in 63 degree of angles in figure, white body 8 with
Above the angle fixed support plate 6 that standard defines, similarly, support plate 6 is parallel to the horizontal plane, and can be slided in horizontal plane, and
It is drawn by rope 5 and braking mechanism 4, braking mechanism 4 can set tractive force when discharging rope 5, set in specific test
Fixed tractive force can be obtained through actual measurement with actual wheel and frictional ground force, can also be obtained i.e. by calculating:
Front axle F tractive force=NFront axle surveys weight*μTire and ground friction coefficient
Rear axle F tractive force=NRear axle surveys weight*μTire and ground friction coefficient
For this test simulation, since in actual vehicle impact test, the glide direction of tire is with angled, institute
With μTire and ground friction coefficientF tractive force is reset after being finely adjusted.Other are the same as embodiment 1.
As shown in Figure 1, Figure 2, Figure 4 shows, it is simulated respectively using the vertical bullet vehicle 2 of MDB and MDB angle bullet vehicle 9 by standard
The quality and speed of the deformable obstacle of the movement of defined (MDB-Moving Deformation Barrier), and to white body
8 are collided, this is consistent with the test of real vehicles side collision, that is, stationary vehicle, by the deformable obstacle of movement to provide
Quality and speed to vehicle carry out side collision.So as shown in figure 5, acceleration slide unit 10 adds MDB angle bullet vehicle 9
After speed V0 as defined in speed to standard, acceleration slide unit 10 will start to brake and slow down, MDB angle bullet vehicle 9 and acceleration
Slide unit 10 separates, and is the seat in Fig. 5 at the time of colliding in 1 art skating of slide unit track until colliding with white body 8
Origin is marked, after colliding, the decline of 9 speed of MDB angle bullet vehicle, and white body 8 is due to by MDB angle bullet vehicle 9
Collision increases to speed, when reaching the T moment, that is, (Fig. 5 when the two speed difference is within the scope of set velocity error
Shown in Vgap), MDB angle bullet vehicle 9 will brake rapidly to avoid with white body 8 occur secondary collision.
Embodiment 3
As shown in fig. 6, the bullet vehicle is that column touches bullet vehicle 11, the column touches bullet vehicle 11 and acceleration slide unit 10 is one
Body formula structure, the collision execution unit are collision column.Other are the same as embodiment 1.
For side column impact test, such as the test of EURO-NCAP (European new car evaluation), that is, collision column is static
, the test that vehicle is collided with defined speed and angle and collision column, this hits with above-mentioned move deformable obstacle (MDB)
The side of static vehicle is different, but can also be carried out simulation using the present invention and be estimated.As shown in Figure 6, Figure 7, acceleration
Slide unit 10 touches both bullet vehicles 11 with column and connects together always, and column touches 11 front end of bullet vehicle equipped with the collision by standard predetermined size
Column, when reaching setting impact velocity V0, column touches bullet vehicle 11 and white body 8 collides (0 point of coordinate), in collision process
In, by the control mechanism of acceleration slide unit 10 itself, V0 speed is remained, until 8 velocity and acceleration slide unit of white body
10 or column touch the speed of bullet vehicle 11 and reach unanimity or both speed when differing within the scope of set velocity error (in Fig. 5
Shown in Vgap), i.e., touch bullet vehicle 11 in T moment, acceleration slide unit 10 or column and will brake rapidly and occur to avoid with white body 8
Secondary collision.
Claims (9)
1. a kind of vehicle side collision simulation test structure, including acceleration slide unit, slide unit track and white body, feature exist
In: the position that white body bottom correspondence should set axle is respectively equipped with support plate, is connected with and slides between the support plate
The vertical crossbeam of platform track, the crossbeam sliding are arranged in above slide unit track and white body bottom are parallel to the horizontal plane, institute
The close acceleration slide unit end for stating support plate and slide unit parallel track and support plate is utilized respectively rope and is connected with braking mechanism, institute
State the normal direction friction that braking mechanism simulates tire and ground when real vehicles are collided by rope transmitting tractive force to support plate
Power, is additionally provided with bullet vehicle on the slide unit track between the acceleration slide unit and white body, in the white body and in support plate
Have additional the counterweight for adjusting the centroid position on vehicle mass and vehicle vertical direction, the close white body of the bullet vehicle
End is equipped with collision execution unit, and the white body is surveyed according to test requirements document in collision side installation vehicle door interior trim part, seat and collision
Try dummy.
2. vehicle side collision simulation test structure according to claim 1, it is characterised in that: the bullet vehicle is MDB
Vertical bullet vehicle or MDB angle bullet vehicle or column touch bullet vehicle.
3. vehicle side collision simulation test structure according to claim 1, it is characterised in that: the bullet vehicle and acceleration
Degree slide unit is an integral structure.
4. vehicle side collision simulation test structure according to claim 1, it is characterised in that: the bullet vehicle and acceleration
Degree slide unit is split type structure.
5. vehicle side collision simulation test structure according to claim 1, it is characterised in that: the collision execution unit
For height-adjustable test honeycomb aluminum.
6. vehicle side collision simulation test structure according to claim 1, it is characterised in that: the collision execution unit
To collide column.
7. a kind of test method of vehicle side collision simulation test structure as described in claim 1, it is characterised in that: utilize
Bullet vehicle is directly accelerated to test speed by acceleration slide unit, is hit with white body side, by matching to white body
Weight, external braking mechanism carry out simulating vehicle and the side sliding after side collision occur, wherein the braking mechanism passes through rope
The normal direction frictional force of tire and ground when transmitting tractive force simulates real vehicles collision to support plate is described true with being reused in
The adjustment of vehicle mass and the centroid position in vehicle vertical direction, in collision process, white body side structure deforms,
Side structure is caused to invade into crew module, to realize the simulation test to vehicle side collision intrusion volume, intrusion speed.
8. the test method of vehicle side collision simulation test structure according to claim 7, it is characterised in that: the son
Playing vehicle is the vertical bullet vehicle of MDB or MDB angle bullet vehicle, and the vertical bullet vehicle of the MDB or MDB angle bullet vehicle and acceleration are sliding
Platform is split type structure, and the vertical bullet vehicle of the MDB or MDB angle bullet vehicle accelerate to setting speed under the promotion of acceleration slide unit
Degree, acceleration slide unit brakes vertical with MDB bullet vehicle or MDB angle bullet vehicle separates, the vertical bullet vehicle of the MDB or the angle MDB
The quality and speed for spending bullet vehicle are set by related vehicle impact standards, the vertical bullet vehicle of the MDB or MDB angle
Bullet vehicle is run on slide unit track, and finally with white body sideways collisions, then white body sliding speed is gradually increased, MDB
The sliding speed of vertical bullet vehicle or MDB angle bullet vehicle gradually decreases, when white body bullet vehicle vertical with MDB or MDB angle
The sliding speed of bullet vehicle reaches unanimity or both speed difference when setting in error range, the vertical bullet vehicle of MDB or the angle MDB
Degree bullet vehicle is braked rapidly, avoids that secondary collision occurs with white body.
9. the test method of vehicle side collision simulation test structure according to claim 7, it is characterised in that: the son
Playing vehicle is that column touches bullet vehicle, and the column touches bullet vehicle and is an integral structure with acceleration slide unit, and the column touches bullet vehicle and accelerating
Degree slide unit accelerates to setting under pushing and impact velocity and remains unchanged, on slide unit track operation and with acceleration slide unit regardless of
From, the column touches bullet vehicle finally with white body sideways collisions, then white body sliding speed is gradually increased, when white body with
The sliding speed that column touches bullet vehicle reaches unanimity or both speed difference when setting in error range, and column touches bullet vehicle and makes rapidly
It is dynamic, it avoids that secondary collision occurs with white body.
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