KR100291878B1 - Simulator for side impact of vehicle - Google Patents

Abstract

The simulator for lateral collision of a vehicle according to the present invention is to arrange a white body or a vehicle body formed by attaching or detaching a suitable vehicle component to a white body as a vehicle specimen and to strike a collision body at a predetermined speed to the specimen. It features. Specifically, the white table 1 as a vehicle test specimen or the first table car art 2 in which the vehicle body is fixedly mounted, and the second table car art in which the aluminum honeycomb 4 is fixedly mounted ( 5), the guide rail 10 and the second table car art 5 is pushed through the piston 71 equipped with the position sensor to give the second table car art 5 a target speed. After having the urging device 7, the control device 8 for controlling the urging device 7, and the shock absorber 9, the second table car art 5 is pushed by the urging device 7, It moves at a constant speed and collides with the side surface of the specimen 1 on the first table car art 2, and the shock absorber 9 is the first table car art 2 and the second table car art 5 after the collision. To stop the movement.

Description

Simulator for side collision of vehicle

The present invention relates to a side impact simulator for use in side impact testing of vehicles such as four-wheeled vehicles.

As a vehicle side impact test, in the past, a real vehicle collision test was conducted to evaluate and develop passenger protection measures such as an airbag for side impact and a side door beam.

This lateral collision test causes a moving deformable barrier ("MDB") to strike the test specimen so that the actual vehicle specimen, in particular the strength, stiffness or collision airbag of the door, It is conducted to research and develop a safe car by evaluating the influence on the dummy doll in the vehicle.

Conventionally, this type of side crash test has been carried out by the real vehicle crash test shown in FIG. 5.

That is, the vehicle (MDB) 35 that simulates the deformation characteristics, the weight, and the center of the front part of the real vehicle is set as a specimen by placing the real vehicle 31 having the dummy doll in the vehicle interior. At the time when the target speed is reached on the driving path by pulling the wire 14 by a winch 13 or the like, the MDB (MDB) is provided via the aluminum honeycomb 4 mounted at the tip of the MDB 35. 35) was made to hit the side of the real vehicle 31, and the response of the dummy doll in the vehicle interior of the real vehicle 31 was measured and evaluated.

However, as mentioned above, in the conventional real vehicle crash test, there are problems as listed below.

① It costs a lot of development costs because it destroys expensive real vehicles every time.

② The road is long (usually about 100m), requiring extensive test paper.

(3) It is difficult to make the collision vehicle MDB hit a predetermined position of the real vehicle with good accuracy.

Because of these problems, the side crash test due to a real vehicle collision has a problem of an increase in test cost due to an increase in the number of test specimens, an increase in test time, and an extensive test paper.

For this reason, the development of a simulator that can lower the development cost of a vehicle that is safe from side collision and solve the above problem is despairing worldwide.

An object of the present invention is to provide a simulator for side collision of a side collision test of a vehicle that can solve the above various problems.

That is, the main object of the present invention is to provide a simulator for side impact that can be used inexpensive white body and the like instead of expensive real vehicles.

Moreover, the objective of this invention is to make a collision body collide with a collision object with good precision, and to comprise so that a running path may be shortened.

In addition, another main object of the present invention is to provide a simulator for side collision of a vehicle in which only an inexpensive vehicle door needs to be a collision body instead of an expensive real vehicle.

1 is a configuration diagram showing a system of a side impact simulator according to a first embodiment of the present invention;

2 is a block diagram showing a system of a side impact simulator according to a second embodiment of the present invention;

3 is a block diagram showing a system of a side impact simulator according to a third embodiment of the present invention;

4 is a graph showing an example of a target speed waveform for a vehicle door;

Figure 5 is a block diagram showing a simulator for side collision used in a conventional real vehicle side collision test.

Explanation of symbols for main parts of drawings

1: specimen (white body) 2: 1st table car art

3: specimen mounting jig 4: aluminum honeycomb

5: second table carat 6: aluminum honeycomb mounting jig

7: force device 8: control device

9: shock absorber 10: guide rail

In order to achieve the above object, in the simulator for lateral collision of a vehicle according to the present invention, a white body or a vehicle body formed by attaching or detaching a suitable vehicle component to a white body is disposed as a specimen of the vehicle, and the specimen has a predetermined speed. Try to hit the collider.

In the present invention, the first table car art in which the white body or the vehicle body as the vehicle test specimen is fixedly mounted as the collision body and the second table car art in which the collider is fixedly mounted on the same guide rail, respectively. The collider is slidably placed and the second table car art is pushed on the guide rail at a target speed by a force device, so that the colliding body collides with the white body or the vehicle body.

Further, in the present invention, means for forcing the movement of the first table car art and the second table car art after the colliding body collides with the white body or the vehicle body is provided.

More specifically, in the preferred embodiment of the present invention, 1) the first table car art 2 in which the white body 1 as a vehicle specimen is fixed as a collision body, and 2) an aluminum honeycomb 4 as a collision body. ) And a guide rail (10) for moving the first table car art (2) and the second table car art (5) along a series of predetermined paths. ) And a force generator 7 for imparting a target speed to the second table car art 5 by pushing the second table car art 5 through the piston 71 equipped with the ④ position sensor. And (5) a controller (8) for controlling the urging device (7), and (⑥) a shock absorber (9) arranged at the side of the second table car art (5), The second table car art 5 is moved at a constant speed after being pushed by the urging device 7 to this movement. Therefore, the aluminum honeycomb 4 collides with the side surface of the specimen 1 on the first table car art 2, and the buffer 9 is the aluminum honeycomb 4 with the specimen 1 ), The movement of the first table car art 2 and the second table car art 5 is stopped.

In addition, "white body" generally refers to a thin steel panel that is pressed and squeezed into a skeleton shape of a vehicle body, mounted with a door, a fender, or the like to form a body shell, and used in the present invention. The test specimen to be used is not limited to this general white body, and may be a vehicle body formed by attaching or detaching various vehicle components such as window glass, seat, instrument panel, and passenger protective equipment, depending on the purpose of the test.

Thus, the simulator according to the present invention functions as follows.

In the said means, the 2nd table car art 5 and the front-end | tip part of the force part of the force machine 7 are contacted.

When this force part is comprised by the piston 71, the 2nd table car art 5 and the piston 71 were made in the state which made the piston 71 of the force brace 7 the stroke end of a contraction side. Contact.

From this state, the piston 71 of the force generator 7 is operated to push the second table car art 5 to give the second table car art 5 a target speed.

When the acceleration of the second table car art 5 becomes "0" and reaches the maximum speed, the operation of the piston 71 is stopped. Thereafter, the second table carat 5 makes a substantially constant constant linear motion inertia away from the piston 71.

In front of it, the 1st table car art 2 which fixed-mounted the white body 1 in which the dummy doll was arrange | positioned inside the vehicle is stationary, and the 2nd table car art 5 and the white body 1 are fixed. Side crash.

At this time, the side surface of the door and the like of the white body 1 is deformed and the dummy doll's response is measured by hitting the dummy doll.

Thereafter, the first table car art 2 and the second table car art 5 move at about the same speed, and are finally forcibly stopped by the shock absorber 9.

In addition, in order to achieve the object already described, in the vehicle side collision simulator according to the present invention, a pre-deformed vehicle door is arranged as a collision body, a dummy doll is arranged as a collision body, and the vehicle door is driven at a target speed. It hits the dummy doll.

In addition, in this invention, the deformation | transformation of the said vehicle door is made into the shape corresponding to the deformation of the door at the time of the collision of the vehicle door and a dummy doll previously calculated | required by FEM calculation etc.

According to a preferred embodiment of the present invention, the simulator for lateral collision of a vehicle includes: ① a dummy doll 101 as a collision body, ② a binding jig 102 for suspending the dummy doll 101 in the air, and ③ a preliminary deformation. Pushing the vehicle door 103 via the vehicle door 103 as a collided vehicle and a piston 151 equipped with a ④ position sensor, thereby providing a force waveform 105 for giving a target speed waveform to the vehicle door 103. ), ⑤ a controller 106 for controlling the forcer 105, ⑥ an engaging jig 104 for fixing an end of the piston 151 of the forcer 105 and the vehicle door 103. Equipped with.

In this way, the above simulator according to the present invention functions as follows.

In the above means, the door when the vehicle door 103 collides with the dummy doll 101 from the results of the calculation by the finite element method (hereinafter, referred to as the FEM (Finite Element Method) calculation) or the side collision test in advance. The deformation amount is obtained in advance, and the vehicle door 103 is deformed in advance in correspondence with the door deformation amount, and the tip of the piston 151 of the pre-deformed vehicle door 103 and the forcer 105 is fixed by the engagement jig. . Then, the piston 151 of the force transducer 105 is set to the stroke end on the contraction side.

From this state, the piston 151 of the force transducer 105 is controlled and operated to give the vehicle door 103 a target velocity waveform obtained from the result of the FEM calculation or the like.

In the front, the dummy doll 101 is suspended by the restraint jig 102 from the top and suspended, and the vehicle door 103 and the dummy doll 101 collide with each other.

At this time, the vehicle door 103 hits the dummy doll 101 and the response of the dummy doll 101 is measured.

A significant influence on the response of the dummy doll 101 is the rigidity and speed of the vehicle door 103 to be hit.

Since the deformation amount of the vehicle door 103 at the time of colliding with the MDB changes at every instant, the rigidity also changes at every instant.

This is why the door stiffness when the vehicle door 103 and the dummy doll 101 collide with each other is important.

By the FEM calculation or the like, the door deformation at this moment (when the vehicle door 103 collides with the dummy doll 101) is obtained in advance, and the vehicle door 103 is previously obtained by a static jack or the like. It is for this reason that it is necessary to deform as such.

An embodiment of the present invention is shown in FIGS.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

First embodiment

1 is a configuration diagram of a system showing a first embodiment of an automobile crash simulator of the present invention.

In Fig. 1, reference numeral 7 denotes an urging device having a piston 71. As shown in Figs.

By driving the piston 71, the force transducer 7 is capable of providing a target speed to the second table car art 5 without holding the second table car art 5.

The piston 71 of the forcer 7 is equipped with a position sensor (not shown).

The controller 7 is connected to the urging device 7 via the control measuring cable 12.

The force sensor 7, the controller 8, and the position sensor mounted on the piston 71 of the force generator 7 constitute a force control system.

The force press 7 of this force control system is operated by actuators, such as an electrohydraulic servo type or an electric type.

In front of the force generator 7, the second table car art 5 and the second table car art 5, which are pushed by the force generator 7, and move at a constant speed, are placed on the first table car art 2; And the first table carart (2) moving side by side in close contact with the second table car art (5) after lateral collision with the specimen (half white body which is half of the white body divided from its center line). And a shock absorber 9 for stopping the movement of the first table car art 2 and the second table car art 5 is provided.

Here, the reason why the specimen 1 is a half white body is because of cost reduction.

In addition, in order to mount the specimen 1 on the 1st table car art 2, the specimen mounting jig 3 is provided.

In addition, the second table car art 5, which is a vehicle corresponding to MDB, which is the collision vehicle of the real vehicle crash test, is equipped with an aluminum honeycomb 4 and an aluminum honeycomb mounting jig 6 equivalent to those fixed to the MDB tip. It is stiffness, weight and center equivalent to MDB.

Therefore, in the system of this embodiment, since it is destroyed every time the side impact simulation, it is necessary to replace the aluminum honeycomb 4 and the specimen 1.

In addition, sliding devices 11 are disposed in the first table car art 2 and the second table car art 5 to smoothly move the front and rear directions and restrain the movement of the top, bottom, left and right, respectively. According to the series of guide rails 10 (same moving path) installed on the floor 20, the user can move smoothly and safely.

Next, the side collision simulation test by the side impact simulator for automobiles of the structure of FIG. 1 is demonstrated.

First, the specimen 1 on which the dummy doll (not shown) is arranged is fixed to the first table car art 2 via the specimen mounting jig 3 and left to stand.

Next, the aluminum honeycomb 4 is fixed to the second table car art 5 via the aluminum honeycomb mounting jig 6, and the piston 71 of the forcer 7 is moved to the stroke end of the contraction side. In one state, this piston 71 is contacted with the second table car art 5.

From this state, the force control system generates a control signal and applies feedback control to give the second table car art 5 a target speed.

As a result, the piston 71 of the forcer 7 is operated to push the second table car art 5.

Then, the controller 8 stops the operation of the piston 71 after the acceleration of the second table car art 5 becomes "0" and reaches the maximum speed.

In this way, the 2nd table car art 5 moves away from the piston 71, and performs the substantially constant constant linear motion inertia.

Thereafter, the side surface collides with the specimen 1 on the first table car art 2.

At that time, the door or the like of the white body 1, which is the specimen, is deformed, and the dummy doll's response is determined by hitting the dummy doll by the deformed door, so that measurement data can be obtained.

By analyzing and evaluating the measurement data, the side impact stability of the vehicle is evaluated, and necessary measures are established.

After this collision, the first table car art 2 and the second table car art 5 are almost merged and moved along the guide rail 10 to the right in FIG. 1, but safely without damage by the shock absorber 9. Will stop.

In addition, in order to bring the phenomenon after the collision closer to that of the real vehicle crash test, the total weight of the specimen 1, the first table car art 2, and the specimen mounting jig 3 is adjusted to the actual vehicle weight, and the guide rail ( 10) the friction between the slide device 11 and the tire and the road surface of the real vehicle.

1 and 2, the white body 1 is used as the specimen of the vehicle. However, depending on the purpose of the test, the white body 1 may be provided with various materials such as a window glass, a seat, an instrument panel, and a passenger protective device. A vehicle body formed by mounting or detaching a vehicle component may be used in place of the white body 1.

Second embodiment

A second embodiment of the present invention will be described with reference to FIG.

The difference from the simulator of FIG. 1 is two points: the specimen and the force group.

The specimen 21 of FIG. 2 is a complete white body, as can be seen from the figure. In this case, the specimen cost is higher than in FIG. 1, and an improvement in test accuracy can be expected.

Moreover, when the damage after the side impact test of the specimen 21 is not severe, there exists a possibility that the specimen 21 may be rotated 180 degrees, and the side collision simulation may be performed with respect to the remaining side surface.

Next, with respect to the force generator 27, the pnumatic force force 27 which does not perform feedback control in this embodiment is shown.

That is, the force waveform determined by the action of the metering pin and the high pressure air whose hydraulic pressure area changes according to the stroke of the piston 271 is made to come out, and is struck according to the weight of the second table car art 5. Speed is also determined.

For this reason, there is a problem in the adjustment and the precision for any target speed, but it is a well-established method that has been used in the past.

Since the side collision simulation method is the same as that of the simulator of FIG. 1, the description is abbreviate | omitted.

In addition, in the real vehicle side crash test, the attitude direction and the speed direction of the MDB may be different (27 ° in the US Federal Motor Vehicle Safety Standard (FMVSS) standard). However, in order to perform this simulation, the specimens (1, 21) and aluminum When the honeycomb 4 is attached to the first table carart 2 and the second table carart 5 at an angle through the specimen mounting jig 3 and 23 and the aluminum honeycomb mounting jig 6, respectively. do.

Third embodiment

3 is a block diagram showing a system of a crash simple simulator for a vehicle of the present invention.

In Fig. 3, reference numeral 105 denotes an urging device having a piston 151.

The force transducer 105 drives the piston 151 to impart a target speed waveform to the pre-deformed vehicle door.

Usually, the speed waveform of this door can be calculated | required from FEM calculation etc.

The piston 151 of the force transducer 105 is equipped with a position sensor (not shown).

The controller 105 is connected to the force transducer 105 via a control measurement cable 107 for controlling the force transducer 105.

The force sensor 105, the controller 106 and the position sensor mounted to the piston 151 of the force transducer 105 constitute a force control system.

The forcer 105 of this force control system is operated by actuators, such as an electrohydraulic servo type or a coin type.

The dummy doll 101 is suspended in the air from above by the restraining jig 102 on the front side of the force transducer 105.

Next, the side collision simple simulation test by the vehicle side collision simple simulator of FIG. 3 is demonstrated.

First, the dummy doll 101 is suspended by the restraining jig 102 from above and suspended in a predetermined position posture in the air.

Next, the vehicle door (predeformed door) 103 pre-deformed by the amount corresponding to the deformation during the collision of the MDB is interposed between the jig 104 at the distal end of the piston 151 of the forcer 105. And the piston 151 of the force transducer 105 is fixed to the stroke end on the contraction side.

From this state, the force control system generates a control signal and gives feedback control in order to give a target speed waveform to the vehicle door 103.

As a result, the piston 151 of the forcer 105 moves to push the door 103 for the vehicle.

Thereafter, the vehicle door 103 laterally collides with the dummy doll 101.

At this time, by hitting the dummy doll 101 by the vehicle door 103 that has been deformed in advance based on the FEM calculation or the like, the response of the dummy doll 101 is determined, and measurement data can be obtained.

By analyzing and evaluating this measurement data, the side impact stability of the vehicle is evaluated and necessary measures are established.

4 shows an example of the waveform of the target speed for the vehicle door.

Since this invention is comprised as mentioned above, the effect as described below can be exhibited.

Inexpensive whitebody can be used instead of expensive real vehicle, which can reduce the cost of side impact test.

(2) Since a large output force device such as an electrohydraulic servo type, a coin type, or a pneumatic piston type can be used, the acceleration distance can be shortened, and the stopping distance can be shortened due to the strong braking by the shock absorber. As a result, it is possible to greatly shorten the length of the traveling path and to significantly reduce the test paper.

③ Since the first table car art 2 and the second table car art 5 can move along the guide rail, the aluminum honeycomb on the second table car art 5 is moved to the first table car art 2. It can be made to hit the predetermined position of the above specimen with good precision.

(4) In the side collision simple simulator, it is possible to reduce the cost because only a low-cost vehicle door can be used as a specimen instead of an expensive real vehicle.

⑤ In the side collision simple simulator, the vehicle door can be made to hit the predetermined position of the dummy doll with good accuracy.

(6) Therefore, according to the present invention, it is possible to reduce the test cost, to compact the test apparatus (test paper) and to improve the test accuracy, and to solve the main problems of the conventional real vehicle side collision test.

Claims (3)

In the simulator for the side collision of the vehicle, The pre-deformed vehicle door is arranged as an impulse body, the dummy doll is arranged as a collision body, and the vehicle door is driven at a target speed so as to hit the dummy doll. Simulator for side impact of vehicles. The method of claim 1, The deformation of the vehicle door is a deformation corresponding to the deformation of the door at the time of the collision between the vehicle door and the dummy doll, which is obtained in advance by FEM calculation or the like. Simulator for side impact of vehicles. In the simulator for the side collision of the vehicle, ① dummy doll 101 as a collision body, ② restraining jig 102 for hanging the dummy doll 101 in the air, (3) the vehicle door 103 as a pre-deformed collider, ④ an urging device 105 for imparting a target speed waveform to the vehicle door 103 by pushing the vehicle door 103 via a piston 151 equipped with a position sensor; A controller 106 for controlling the forcer 105; (6) an end portion of the piston 151 of the forcer 105 and a coupling jig 104 for fixing the vehicle door 103 Simulator for side impact of vehicles.

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