CN104931221A - Dummy lower limb impact test method - Google Patents
Dummy lower limb impact test method Download PDFInfo
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- CN104931221A CN104931221A CN201510315439.8A CN201510315439A CN104931221A CN 104931221 A CN104931221 A CN 104931221A CN 201510315439 A CN201510315439 A CN 201510315439A CN 104931221 A CN104931221 A CN 104931221A
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Abstract
The invention discloses a dummy lower limb impact test method. According to the method, dummy lower limb impact test equipment is adopted and includes an impact test object device, a dummy lower limb, a guide rail, a sliding device, a foot loading device, a loading device, a stopping device, a sensor group and an upper computer. The method includes the following steps of: 1, preparation work; step 2, loading; step 3, releasing; and step 4, data collection and analysis. With the dummy lower limb impact test method of the invention adopted, a dynamic impact process of the dummy lower limb, a vehicle dashboard and floor can be accurately simulated; dummy lower limb damage value data can be acquired in a test process, so that damage to the lower limb of a passenger which caused by the vehicle dashboard, the floor, a foot pad and the like can be quickly assessed.
Description
Technical field
The invention belongs to automotive crash safety technology, be specifically related to a kind of dummy's lower limb impact test method.
Background technology
Today of social concerns is day by day subject to, for passenger provides omnibearing protection to be the target that automobile production enterprise strives at automotive safety.The collision safety performance of automobile is not only relevant to the structural design of vehicle body, also closely related with the structure of facing in each in car, material.During automobile generation head-on crash, along with vehicle body is out of shape stopping gradually, occupant can move forward by relative vehicle body, front-row occupant lower limb and instrument panel collide, in collision process, the foot of front-row occupant can contact with carpet with body platform, if the moulding of instrument panel rigidity, carpet and foot pad and the improper lower limb of passenger that will cause of rigidity damage simultaneously.In each automotive safety appraisement system; the lower limb injury of dummy is also the importance investigated; and become one of damage position the most serious, visible, design moulding and suitable fascia, carpet and the foot pad protection to lower limb of passenger of rigidity is most important.
Traditional method of testing, a kind of is a kind of proving installation of knee area of vehicle rigidity as CN 201637558 U records, uses the knocker of simulation knee shape to impact instrument panel, the rigidity of test board.But this method of testing can only obtain the rigidity information of instrument panel, cannot reflect the injury to dummy's shank.Another is the thigh and the calf module that use dummy, and is fixed by dummy's ankle, and impact thigh end, the method can reflect the injury values of dummy's thigh and knee to a certain extent, but effectively cannot reflect the injury values of dummy's shank.
Therefore, be necessary to develop a kind of new dummy's lower limb impact test method.
Summary of the invention
The object of this invention is to provide a kind of dummy's lower limb impact test method, can accurate simulation dummy's lower limb and Vehicular instrument panel, floor dynamic impulsion process, by the dummy's lower limb injury values data in acquisition test process, rapid evaluation can be carried out to Vehicular instrument panel, floor and foot pad etc. to the injury that lower limb of passenger causes.
Dummy's lower limb impact test method of the present invention, adopt dummy's lower limb impact test equipment, this dummy's lower limb impact test equipment comprises:
Impulse test object apparatus, it comprises fixed support, and is fixed on car body component on fixed support, Vehicular instrument panel and floor, for the state of mimic board assembly on car load;
Dummy's lower limb, it comprises thigh, the shank be connected with thigh, and the foot be connected with shank, for simulating the attitude of dummy's respective leg portions in complete vehicle test;
Guide rail, it is horizontally disposed in left-right direction, and guide rail is positioned at the right side of impulse test object apparatus;
Carriage, it comprises thigh connecting elements and sliding component, one end of this thigh connecting elements is connected with the thigh of dummy's lower limb, and the other end of thigh connecting elements is connected with sliding component, and sliding component is connected with guide rail and can horizontally slips along guide rail;
Foot's charger, it comprises promotion component and ways, the upper end of described promotion component is connected with carriage, promote the lower end of component to be connected with the right-hand member of ways, be provided with limiting plate at the left part of ways, the foot of described dummy's lower limb to be placed on ways and to be positioned at the left side of limiting plate;
Charger, for driving carriage to move along guide rail, is separated with carriage after dummy's lower limb are loaded into predetermined speed;
Stop device, this stop device is arranged on the right side on floor, and stop device can be corresponding with the left end of the ways of foot charger or contact, before dummy's lower limb and Vehicular instrument panel collide, described stop device can collide with foot's charger, foot's charger is departed from from carriage, makes disengaging foot of the foot of dummy's lower limb charger slide on floor simultaneously and also continue to slide left;
Sensor group, comprises multiple sensor be arranged on dummy's lower limb, for detecting the injury values data of dummy's lower limb in collision process;
Host computer, for the injury values data that each sensor of acquisition and processing detects;
Described method comprises the following steps:
Step 1, preliminary work
Attitude according to dummy's respective leg portions in complete vehicle test adjusts the angle of dummy's lower limb and foot position, during the pose adjustment of dummy's lower limb is extremely tested with actual collision, the attitude of dummy's leg is consistent, and each sensor is arranged on dummy's lower limb, the counterweight on carriage needed for installation testing;
Step 2, loading procedure
Charger drives carriage and foot's charger along guide rail to left movement, and make dummy's lower limb reach pre-set velocity, after dummy's lower limb reach pre-set velocity, charger is separated with carriage;
Step 3, dispose procedure
When stop device contacts with the promotion component of foot charger, foot's charger is separated with carriage, make the foot of dummy's lower limb art skating on floor, the thigh of dummy's lower limb continues along guide rail art skating together with carriage and counterweight, until dummy's lower limb and Vehicular instrument panel and floor are collided;
Step 4, data acquisition and analysis
Host computer gather dummy lower limb with Vehicular instrument panel and floor impact process in the middle of the injury values data that detect of each sensor, and to assess based on the injury values of described injury values data to dummy's lower limb.
Described carriage is provided with the interface for installing counterweight, for experimentally needing the configuration of installing different quality.
Described thigh connecting elements is connected with adopting rotary gemel between sliding component, adopts and be rigidly connected between described thigh connecting elements and thigh; The setting angle of thigh can be regulated, and thigh freely can be rotated around hinge point in collision process, guarantee that thigh is identical with the kinematic relation of pelvis with dummy's thigh with the kinematic relation of carriage.
Described sensor group comprises:
Thigh force snesor, is installed on dummy's lower limb thigh position, for measuring dummy thighbone power;
Knee joint slippage sensor, is installed on dummy's lower limb knee joint position, for measuring dummy's knee joint slippage;
Shin bone power and moment of flexure sensor, be installed on the two ends up and down of dummy's lower limb shin bone, for measuring power and the moment of flexure of dummy's shin bone;
Foot acceleration transducer, is installed in dummy's sole, for measuring the acceleration of dummy's foot.
Described dummy's lower limb adopt one-sided dummy's lower limb.
The present invention has the following advantages:
(1) by the dummy's lower limb injury values data in acquisition test process, rapid evaluation can be carried out to Vehicular instrument panel, floor and foot pad etc. to the injury that lower limb of passenger causes;
(2) use experimental facilities of the present invention to carry out dummy's lower limb impulse test, the injury values of dummy's leg in complete automobile collision can be reflected better, the experimentation cost in vehicle research and development can be reduced compared to the test of use complete automobile collision or sled test;
(3) use testing equipment of the present invention, can research and development early stage validating instrument dash board and carpet design scheme, to the protected effect of occupant, shorten the research and development time quickly.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
Dummy's lower limb impact test method as shown in Figure 1, adopt dummy's lower limb impact test equipment, this dummy's lower limb impact test equipment comprises impulse test object apparatus, dummy's lower limb 11, guide rail 8, carriage, foot's charger, charger, stop device 4, sensor group and host computer.
Impulse test object apparatus comprises fixed support, and is fixed on car body component 1 on fixed support, Vehicular instrument panel 2 and floor 3, for the state of mimic board assembly on car load.
Dummy's lower limb 11 adopt one-sided dummy's lower limb, and it comprises thigh, the shank be connected with thigh, and the foot be connected with shank, for simulating the attitude of dummy's respective leg portions in complete vehicle test.
Guide rail 8 is horizontally disposed in left-right direction, and guide rail 8 is positioned at the right side of impulse test object apparatus.
Carriage comprises thigh connecting elements 10 and sliding component 9, one end of this thigh connecting elements 10 and the thigh of dummy's lower limb 11 adopt and are rigidly connected, the other end of thigh connecting elements 10 adopts rotary gemel to be connected with between sliding component 9, the setting angle of thigh can be regulated, and thigh freely can be rotated around hinge point in collision process, ensure that thigh is identical with the kinematic relation of pelvis with dummy's thigh with the kinematic relation of carriage.Sliding component 9 is connected with guide rail 8 (such as, sliding component 9 is enclosed within guide rail 8) and can horizontally slip along guide rail 8.Carriage is provided with the interface for installing counterweight, for installing the counterweight of different quality under different operating mode.
Foot's charger comprises promotion component 7 and ways 5, and the upper end of described promotion component 7 is connected with carriage, makes foot's charger synchronous with carriage; Promote the lower end of component 7 to be connected with the right-hand member of ways 5, be provided with limiting plate 6 at the left part of ways 5, the foot of described dummy's lower limb 11 to be placed on ways 5 and to be positioned at the left side of limiting plate 6.
Charger moves (namely to the motion of A direction) along guide rail 8 for driving carriage, is separated after dummy's lower limb 11 are loaded into predetermined speed with carriage.
Stop device 4 is arranged on the right side on floor 3, and stop device 4 can be corresponding with the left end of the ways 5 of foot charger or contact, before dummy's lower limb 11 collide with Vehicular instrument panel 2, described stop device 4 can collide with foot's charger, make foot's charger depart from (need guarantee that foot's charger resilience does not occur) from carriage, make disengaging foot of the foot of dummy's lower limb 11 charger slide on floor 3 simultaneously and also continue to slide left.
Sensor group comprises multiple sensor be arranged on dummy's lower limb 11, for detecting the injury values data of dummy's lower limb 11 in collision process, in the present embodiment, sensor group comprises thigh force snesor, be installed on dummy's lower limb thigh position, for measuring dummy thighbone power; Knee joint slippage sensor, is installed on dummy's lower limb knee joint position, for measuring dummy's knee joint slippage; Shin bone power and moment of flexure sensor, be installed on the two ends up and down of dummy's lower limb shin bone, for measuring power and the moment of flexure of dummy's shin bone; Foot acceleration transducer, is installed in dummy's sole, for measuring the acceleration of dummy's foot.
Host computer is used for the injury values data that each sensor of acquisition and processing detects.
Dummy's lower limb impact test method of the present invention comprises the following steps:
Step 1, preliminary work
Attitude according to dummy's respective leg portions in complete vehicle test adjusts the angle of dummy's lower limb 11 and foot position, during the pose adjustment of dummy's lower limb 11 is extremely tested with actual collision, the attitude of dummy's leg is consistent, counterweight on carriage needed for installation testing, according to the demand of different operating mode in the different quality of the thigh backend arrangement of dummy's lower limb 11, each sensor is arranged on dummy's lower limb 11 simultaneously.
Step 2, loading procedure
Charger drives carriage and foot's charger along guide rail 8 to left movement, dummy's lower limb 11 are made to reach pre-set velocity, and thigh, shank and foot are loaded concurrently pre-set velocity, after dummy's lower limb 11 reach pre-set velocity, charger is separated with carriage.
Step 3, dispose procedure
When stop device 4 contacts with the promotion component 7 of foot charger, foot's charger is separated with carriage, make the foot of dummy's lower limb 11 art skating on floor 3, the thigh of dummy's lower limb 11 continues along guide rail 8 art skating together with carriage and counterweight, until dummy's lower limb 11 collide with Vehicular instrument panel 2 and floor 3, floor 3 can be body in white, can also be body in white has installed vehicle carpet.
Step 4, data acquisition and analysis
Host computer gather dummy lower limb 11 with Vehicular instrument panel 2 and floor 3 knockout process in the middle of the injury values data that detect of each sensor, these injury values data including but not limited to the large leg strength of dummy, dummy's knee joint slippage, dummy's shin bone power, dummy's shin bone moment of flexure and dummy's foot acceleration, and are assessed according to collision regulation and the injury values of third party evaluation standard to dummy's lower limb 11 based on described injury values data.
Claims (5)
1. dummy's lower limb impact test method, is characterized in that: adopt dummy's lower limb impact test equipment, this dummy's lower limb impact test equipment comprises:
Impulse test object apparatus, it comprises fixed support, and is fixed on car body component (1) on fixed support, Vehicular instrument panel (2) and floor (3), for the state of mimic board assembly on car load;
Dummy's lower limb (11), it comprises thigh, the shank be connected with thigh, and the foot be connected with shank, for simulating the attitude of dummy's respective leg portions in complete vehicle test;
Guide rail (8), it is horizontally disposed in left-right direction, and guide rail (8) is positioned at the right side of impulse test object apparatus;
Carriage, it comprises thigh connecting elements (10) and sliding component (9), one end of this thigh connecting elements (10) is connected with the thigh of dummy's lower limb (11), the other end of thigh connecting elements (10) is connected with sliding component (9), and sliding component (9) is connected with guide rail (8) and can horizontally slips along guide rail (8);
Foot's charger, it comprises promotion component (7) and ways (5), the upper end of described promotion component (7) is connected with carriage, the lower end promoting component (7) is connected with the right-hand member of ways (5), be provided with limiting plate (6) at the left part of ways (5), the foot of described dummy's lower limb (11) is placed on ways (5) and goes up and the left side being positioned at limiting plate (6);
Charger, for driving carriage along guide rail (8) motion, is separated with carriage after dummy's lower limb (11) are loaded into predetermined speed;
Stop device, this stop device is arranged on the right side of floor (3), and stop device can be corresponding with the left end of the ways of foot's charger (5) or contact, before dummy's lower limb (11) collide with Vehicular instrument panel (2), described stop device can collide with foot's charger, foot's charger is departed from from carriage, makes disengaging foot of the foot of dummy's lower limb (11) charger slide into floor (3) simultaneously and go up and continue to slide left;
Sensor group, comprises multiple sensor be arranged on dummy's lower limb (11), for detecting the injury values data of dummy's lower limb (11) in collision process;
Host computer, for the injury values data that each sensor of acquisition and processing detects;
Described method comprises the following steps:
Step 1, preliminary work
Attitude according to dummy's respective leg portions in complete vehicle test adjusts the angle of dummy's lower limb (11) and foot position, during the pose adjustment of dummy's lower limb (11) is extremely tested with actual collision, the attitude of dummy's leg is consistent, and each sensor is arranged on dummy's lower limb (11), the counterweight on carriage needed for installation testing;
Step 2, loading procedure
Charger drives carriage and foot's charger along guide rail (8) to left movement, and make dummy's lower limb (11) reach pre-set velocity, after dummy's lower limb (11) reach pre-set velocity, charger is separated with carriage;
Step 3, dispose procedure
When stop device contacts with the promotion component (7) of foot charger, foot's charger is separated with carriage, make the foot of dummy's lower limb (11) at floor (3) upper art skating, the thigh of dummy's lower limb (11) continues along guide rail (8) art skating together with carriage and counterweight, until dummy's lower limb (11) collide with Vehicular instrument panel (2) and floor (3);
Step 4, data acquisition and analysis
Host computer gather dummy's lower limb (11) with Vehicular instrument panel (2) and floor (3) knockout process in the middle of the injury values data that detect of each sensor, and to assess based on the injury values of described injury values data to dummy's lower limb (11).
2. dummy's lower limb (11) impact test method according to claim 1, is characterized in that: described carriage is provided with the interface (12) for installing counterweight.
3. dummy's lower limb impact test method according to claim 1 and 2, it is characterized in that: described thigh connecting elements (10) adopts rotary gemel to be connected with between sliding component (9), adopt between described thigh connecting elements (10) and thigh and be rigidly connected.
4. dummy's lower limb impact test method according to claim 1 and 2, is characterized in that: described sensor group comprises:
Thigh force snesor, is installed on dummy's lower limb thigh position, for measuring dummy thighbone power;
Knee joint slippage sensor, is installed on dummy's lower limb knee joint position, for measuring dummy's knee joint slippage;
Shin bone power and moment of flexure sensor, be installed on the two ends up and down of dummy's lower limb shin bone, for measuring power and the moment of flexure of dummy's shin bone;
Foot acceleration transducer, is installed in dummy's sole, for measuring the acceleration of dummy's foot.
5. dummy's lower limb impact test method according to claim 1 and 2, is characterized in that: described dummy's lower limb (11) adopt one-sided dummy's lower limb.
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| CN201510315439.8A CN104931221B (en) | 2015-06-09 | 2015-06-09 | Dummy's lower limb impact test method |
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| CN201510315439.8A CN104931221B (en) | 2015-06-09 | 2015-06-09 | Dummy's lower limb impact test method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111380442A (en) * | 2018-12-29 | 2020-07-07 | 观致汽车有限公司 | Instrument board model design checking method and instrument board model design checking system |
| CN112098111A (en) * | 2020-07-31 | 2020-12-18 | 东风延锋汽车饰件***有限公司 | Device for verifying knee collision performance of automobile instrument panel and pulley test bed |
| CN112113775A (en) * | 2020-08-14 | 2020-12-22 | 东风延锋汽车饰件***有限公司 | Tool, device and method for testing knee collision performance of automobile instrument panel |
| CN112807124A (en) * | 2021-02-09 | 2021-05-18 | 天津理工大学 | Knee joint impact simulation loading device |
| CN115855424A (en) * | 2023-02-27 | 2023-03-28 | 中国汽车技术研究中心有限公司 | Device and method for testing ankle injury of automobile crash dummy |
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| KR200152223Y1 (en) * | 1996-12-23 | 1999-07-15 | 양재신 | Impact tester for instrument panel of a car |
| DE10107016A1 (en) * | 2001-02-15 | 2002-08-29 | Volkswagen Ag | Knee impact simulator has rocker which pivots towards front car-body in event of crash owing to inertia |
| DE202005010466U1 (en) * | 2005-06-30 | 2005-09-29 | Eyrainer Gmbh & Co. Kg | Knee protector test unit for car development has acceleration slide with adjustable height leg model, instrument panel and foot barrier |
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2015
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Patent Citations (3)
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| KR200152223Y1 (en) * | 1996-12-23 | 1999-07-15 | 양재신 | Impact tester for instrument panel of a car |
| DE10107016A1 (en) * | 2001-02-15 | 2002-08-29 | Volkswagen Ag | Knee impact simulator has rocker which pivots towards front car-body in event of crash owing to inertia |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111380442A (en) * | 2018-12-29 | 2020-07-07 | 观致汽车有限公司 | Instrument board model design checking method and instrument board model design checking system |
| CN112098111A (en) * | 2020-07-31 | 2020-12-18 | 东风延锋汽车饰件***有限公司 | Device for verifying knee collision performance of automobile instrument panel and pulley test bed |
| CN112113775A (en) * | 2020-08-14 | 2020-12-22 | 东风延锋汽车饰件***有限公司 | Tool, device and method for testing knee collision performance of automobile instrument panel |
| CN112807124A (en) * | 2021-02-09 | 2021-05-18 | 天津理工大学 | Knee joint impact simulation loading device |
| CN112807124B (en) * | 2021-02-09 | 2024-04-16 | 天津理工大学 | Knee joint impact simulation loading device |
| CN115855424A (en) * | 2023-02-27 | 2023-03-28 | 中国汽车技术研究中心有限公司 | Device and method for testing ankle injury of automobile crash dummy |
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| CN104931221B (en) | 2017-06-30 |
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