CN113125162A - Chassis strength test method for vehicle - Google Patents
Chassis strength test method for vehicle Download PDFInfo
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- CN113125162A CN113125162A CN201911393810.7A CN201911393810A CN113125162A CN 113125162 A CN113125162 A CN 113125162A CN 201911393810 A CN201911393810 A CN 201911393810A CN 113125162 A CN113125162 A CN 113125162A
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- 238000010998 test method Methods 0.000 title claims abstract description 12
- 238000012360 testing method Methods 0.000 claims abstract description 120
- 238000009863 impact test Methods 0.000 claims abstract description 13
- 230000000994 depressogenic effect Effects 0.000 claims abstract description 4
- 230000002159 abnormal effect Effects 0.000 abstract description 3
- 230000004888 barrier function Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000003381 stabilizer Substances 0.000 description 2
- 238000012795 verification Methods 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000002498 deadly effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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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
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
- G01M17/0078—Shock-testing of vehicles
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
Abstract
The invention discloses a chassis strength test method for a vehicle, which comprises the following steps: and (3) impact test of the road surface protrusion: enabling the vehicle to impact a bulge protruding from the road surface at a certain speed, and recording vehicle test boundary conditions before and after the test; and (3) testing a depression working condition: making the vehicle impact a pit depressed relative to the road surface at a certain speed, and recording vehicle test boundary conditions before and after the test; testing the emergency braking working condition: the vehicle is emergently braked at a certain speed and avoids obstacles on the road surface, and vehicle test boundary conditions before and after the test are recorded. The chassis strength test method for the vehicle can verify the structural strength of the vehicle chassis in a specific driving environment, practically simulate the durability and reliability of vehicle chassis components under the worst driving condition of a vehicle user, ensure that the vehicle does not have abnormal failure faults, well test the structural damage strength of the chassis components and avoid accidents.
Description
Technical Field
The invention relates to the technical field of vehicles, in particular to a chassis strength test method for a vehicle.
Background
The existing chassis component test in the market mainly depends on two aspects, namely a whole vehicle comprehensive test depending on a vehicle enterprise and a bench durability test depending on a chassis system supplier. The two test methods can verify the fatigue, durability and service life of the chassis by superposition tests, and the design and development of the chassis can be generally completed, but the strength verification of the chassis is only limited to simulation tests, the structural strength verification of the chassis under various limit driving conditions is not carried out on a real vehicle, and once the structural strength of the chassis fails, serious vehicle safety accidents are easily caused.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art.
To this end, it is an object of the present invention to propose a chassis strength test method for a vehicle.
In order to achieve the above object, the present invention provides a chassis strength testing method for a vehicle, comprising: and (3) impact test of the road surface protrusion: enabling the vehicle to impact a bulge protruding from the road surface at a certain speed, and recording vehicle test boundary conditions before and after the test; and (3) testing a depression working condition: making the vehicle impact a pit depressed relative to the road surface at a certain speed, and recording vehicle test boundary conditions before and after the test; testing the emergency braking working condition: the vehicle is emergently braked at a certain speed and avoids obstacles on the road surface, and vehicle test boundary conditions before and after the test are recorded.
The chassis strength test method for the vehicle can verify the structural strength of the vehicle chassis in a specific driving environment, practically simulate the durability and reliability of vehicle chassis components under the worst driving condition of a vehicle user, ensure that the vehicle does not have abnormal failure faults, well test the structural damage strength of the chassis components and avoid accidents.
Further, the road surface protrusion impact test includes: and (3) testing the road shoulder impact condition: enabling the vehicle to run towards the road shoulder at a certain speed and impact the road shoulder, wherein an included angle between the running direction of the vehicle and the extending direction of the road shoulder is the maximum rotatable angle of the wheels; and (3) testing a convex working condition: the road surface is provided with a boss, so that a vehicle can impact the boss at a certain speed, and the running direction of the vehicle is perpendicular to the extending direction of the boss.
Further, the bulge working condition test comprises the following steps: the vehicle passes through the boss with both side wheels and the vehicle passes through the boss with one side wheel.
Further, in the test of the road shoulder impact working condition, the sliding friction is formed between the wheels of the vehicle and the road surface, and the sliding coefficient of the road surface is 0.1-0.2.
Further, in the road shoulder impact condition test, the vehicle speed is 15km/h-20 km/h.
Further, in the convex condition test and the concave condition test, the running speed of the vehicle is 30km/h-50 km/h.
Further, in the emergency braking condition test, the vehicle is emergently braked at a plurality of different vehicle speeds to avoid obstacles on the road surface.
Further, in the emergency braking condition test, the vehicle is emergently braked at the speed of 40km/h, 60km/h and 80km/h respectively to avoid obstacles on the road surface.
Further, the depression condition test comprises the following steps: the vehicle passes through the pit with both wheels on both sides and the vehicle passes through the pit with a single wheel.
Further, the vehicle test boundary conditions to be measured in the road surface protrusion impact test, the depression working condition test and the emergency braking working condition test comprise: four-wheel positioning data, counterweight loading data, body attitude data, and chassis standard torque data.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a flow chart of a chassis strength testing method for a vehicle in one embodiment of the present invention;
FIG. 2 is a test chart of the impact condition of the shoulder in one embodiment of the present invention;
FIG. 3 is a test chart of the raised road shoulder condition in one embodiment of the present invention;
FIG. 4 is a test chart of the depressed condition of the road shoulder in one embodiment of the present invention;
fig. 5 is a test chart of the emergency braking condition of the road shoulder in one embodiment of the invention.
Reference numerals:
a road shoulder 1, a bulge 2 and a pit 3.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
A chassis strength test method for a vehicle according to an embodiment of the present invention is described below with reference to fig. 1 to 5, including: the method comprises the following steps of impact test of a road surface protrusion, depression working condition test and emergency braking working condition test.
Specifically, the bump impact test of the road surface: making the vehicle impact the bulge 2 which is bulged out of the road surface at a certain speed, and recording the vehicle test boundary conditions before and after the test; and (3) testing a depression working condition: making the vehicle impact the concave pit 3 relative to the road surface at a certain speed, and recording the vehicle test boundary conditions before and after the test; testing the emergency braking working condition: the vehicle is emergently braked at a certain speed and avoids obstacles on the road surface, and vehicle test boundary conditions before and after the test are recorded.
The vehicle carries out ultimate strength damage to vehicle chassis part in X, Y, Z three directions according to multiple experimental operating modes such as 2 impact of road surface protrusion, sunken impact and emergency braking impact in proper order, simulates the user to fully test the vehicle under the maloperation environment conscientiously to accessible test data carries out appropriate adjustment according to the motorcycle type demand.
The components which can be verified by the chassis strength test method for the vehicle mainly comprise: sub vehicle frame, control arm, knuckle, bumper shock absorber, stabilizer bar and stabilizer bar connecting rod etc..
According to the chassis strength test method for the vehicle, disclosed by the invention, the structural strength of the vehicle chassis can be verified under a specific driving environment, the durability and the reliability of the vehicle chassis component under the worst driving condition of a vehicle user are practically simulated, the vehicle is ensured not to have abnormal failure faults, the structural damage strength of the chassis component can be well tested, and accidents are avoided.
According to one embodiment of the present invention, a pavement bump impact test comprises: and testing the road shoulder impact working condition and the bulge working condition.
Specifically, the road shoulder impact working condition test enables a vehicle to drive towards a road shoulder 1 at a certain speed and impact the road shoulder 1, and an included angle between the driving direction of the vehicle and the extending direction of the road shoulder 1 is the maximum rotatable angle of the wheels; the bulge working condition test is characterized in that a boss is arranged on the road surface, so that a vehicle can rush to the boss at a certain speed, and the running direction of the vehicle is perpendicular to the extending direction of the boss.
The road shoulder impact working condition test is a chassis strength test which simulates the situation that obstacles such as a road shoulder 1 appear suddenly in front when a user drives, a vehicle steering wheel is deadly beaten and directly impacts the obstacle of the road shoulder 1, and the damage condition of the structural strength of chassis parts is verified.
The bulge working condition test is a chassis strength test which simulates the situation that a boss barrier suddenly appears in front when a user drives, the vehicle driving direction is vertical to the extension direction of the boss, and the damage condition of the structural strength of chassis parts is verified after driving.
According to one embodiment of the invention, the bulge working condition test comprises the following steps: the vehicle passes through the boss with both side wheels and the vehicle passes through the boss with one side wheel. In the bulge working condition test, the vehicle passes through the lug boss by two side wheels and then passes through the lug boss by a single side wheel, and the process is repeated for many times, wherein the chassis part is not deformed and is broken to fail, and if the visible area of the vehicle body is not deformed, the vehicle is regarded as passing the test.
According to one embodiment of the invention, in the test of the impact condition of the road shoulder 1, the sliding friction is formed between the wheels of the vehicle and the road surface, and the sliding coefficient of the road surface is 0.1-0.2; in the test of the road shoulder 1 impact working condition, the vehicle speed is 15km/h-20 km/h.
According to one embodiment of the invention, a shoulder 1 obstacle with the height of 140mm is prepared, and the friction coefficient of a road section before a vehicle impacts is about 0.1; the vehicle is simulated to run, the steering wheel is killed at the speed of 17km/h, the included angle between the direction of the vehicle and the extending direction of the road shoulder 1 is 35 degrees, the vehicle runs and impacts the road shoulder 1, one-time impact test is completed, all test data are checked and recorded, and if the chassis component is intact, the test is considered to be passed.
According to one embodiment of the invention, the running speed of the vehicle is 30km/h-50km/h in the bump condition test and the dent condition test. As shown in fig. 3-4, in the bulge condition test, the vehicle rushes to the boss at 30km/h-50 km/h; in the test of the working condition of the pit 33, the vehicle impacts the pit 3 at 30km/h-50 km/h.
According to one embodiment of the invention, the vehicle is driven at 90 ° perpendicular to the direction of the barrier of the projection 2 towards the boss at a speed of 40km/h, four wheels pass the barrier of the projection 2 3 times, then one-sided wheels pass the barrier of the projection 2 3 times at a speed of 40km/h, all test data is checked and recorded, and if the chassis component is not deformed, the fracture fails and the visible area of the body is not deformed, the test is considered to be passed.
According to one embodiment of the invention, a vehicle is rushed into a pit 3 at 90 ° perpendicular to the direction of the pit 3 roadblock at a speed of 40km/h, four wheels are passed over the pit 3 roadblock 3 times, then one-sided wheels are passed over the pit 3 roadblock 3 times at a speed of 40km/h, all test data is checked and recorded, and the test is considered to be passed if the chassis component is not deformed, the fracture fails and the visible region of the vehicle body is not deformed.
According to one embodiment of the invention, in the emergency braking condition test, the vehicle is emergently braked to avoid obstacles on the road surface at a plurality of different vehicle speeds.
The emergency braking working condition test is used for simulating the condition that a chassis component is damaged in the process of driving a vehicle to emergently brake to avoid an obstacle.
According to one embodiment of the invention, in the emergency braking condition test, the vehicle is emergently braked at the speed of 40km/h, 60km/h and 80km/h respectively to avoid obstacles on the road surface.
According to one embodiment of the invention, as shown in FIG. 5, the vehicle runs at a speed of 40km/h, emergency braking is carried out after avoiding an obstacle, and then the vehicle continues to run at a driving speed of 40 km/h; the steps are sequentially repeated at initial braking speeds of 40km/h, 60km/h and 80km/h respectively; three different speed brakes as one cycle, for a total of 27 cycles; finally all test data are checked and recorded and if the chassis components are not deformed, the fracture fails and the visible area of the body is not deformed, the test is considered to be passed.
According to one embodiment of the invention, the depression condition test comprises the following steps: the vehicle passes through the pit 3 with both wheels on both sides and the vehicle passes through the pit 3 with a single wheel. In the depression working condition test, the vehicle passes through the pit 3 by both side wheels, then passes through the pit 3 by one side wheel, and is repeated for a plurality of times, wherein the chassis part is not deformed and is broken to fail, and if the visible area of the vehicle body is not deformed, the vehicle is regarded as passing the test.
According to one embodiment of the invention, the vehicle test boundary conditions to be measured in the road surface protrusion impact test, the depression condition test and the emergency braking condition test comprise: four-wheel positioning data, counterweight loading data, body attitude data, and chassis standard torque data. Before the bump impact test, the depression working condition test and the emergency braking working condition test, data measurement recording is carried out on the vehicle chassis condition, and after all tests are completed, data measurement recording is carried out on the vehicle chassis condition again.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A chassis strength testing method for a vehicle, comprising:
and (3) impact test of the road surface protrusion: enabling the vehicle to impact a bulge protruding from the road surface at a certain speed, and recording vehicle test boundary conditions before and after the test;
and (3) testing a depression working condition: making the vehicle impact a pit depressed relative to the road surface at a certain speed, and recording vehicle test boundary conditions before and after the test;
testing the emergency braking working condition: the vehicle is emergently braked at a certain speed and avoids obstacles on the road surface, and vehicle test boundary conditions before and after the test are recorded.
2. The chassis strength testing method for a vehicle according to claim 1, wherein the road surface protrusion impact test includes:
and (3) testing the road shoulder impact condition: enabling the vehicle to run towards the road shoulder at a certain speed and impact the road shoulder, wherein an included angle between the running direction of the vehicle and the extending direction of the road shoulder is the maximum rotatable angle of the wheels;
and (3) testing a convex working condition: the road surface is provided with a boss, so that a vehicle can impact the boss at a certain speed, and the running direction of the vehicle is perpendicular to the extending direction of the boss.
3. The chassis strength testing method for a vehicle according to claim 2, wherein the bulge condition test includes: the vehicle passes through the boss with both side wheels and the vehicle passes through the boss with one side wheel.
4. The chassis strength test method for a vehicle according to claim 2, wherein in the shoulder impact condition test, the sliding friction is between the wheels of the vehicle and the road surface, and the sliding coefficient of the road surface is 0.1-0.2.
5. The chassis strength testing method for a vehicle according to claim 4, wherein the vehicle speed is 15km/h-20km/h in the shoulder impact condition test.
6. The chassis strength testing method for a vehicle according to claim 2, wherein a running speed of the vehicle is 30km/h to 50km/h in the bump condition test and the dent condition test.
7. The chassis strength testing method for a vehicle according to claim 1, wherein in the emergency braking operation test, the vehicle is emergently braked at a plurality of different vehicle speeds to avoid an obstacle on the road surface.
8. The chassis strength testing method for vehicles according to claim 7, wherein in the emergency braking operation test, the vehicle is emergently braked at a speed of 40km/h, 60km/h, 80km/h to avoid obstacles on the road surface.
9. The chassis strength testing method for a vehicle according to claim 1, wherein the dent condition test includes: the vehicle passes through the pit with both wheels on both sides and the vehicle passes through the pit with a single wheel.
10. The chassis strength testing method for a vehicle according to claim 1, wherein the vehicle test boundary conditions to be measured in the road surface protrusion impact test, the dent behavior test and the emergency braking behavior test include: four-wheel positioning data, counterweight loading data, body attitude data, and chassis standard torque data.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911393810.7A CN113125162A (en) | 2019-12-30 | 2019-12-30 | Chassis strength test method for vehicle |
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| CN201911393810.7A CN113125162A (en) | 2019-12-30 | 2019-12-30 | Chassis strength test method for vehicle |
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| CN113125162A true CN113125162A (en) | 2021-07-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115144147A (en) * | 2022-09-01 | 2022-10-04 | 江铃汽车股份有限公司 | Road impact endurance test method based on whole vehicle power assembly |
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| CN1570589A (en) * | 2004-05-10 | 2005-01-26 | 林武 | Chassis test bench for cars |
| US20110193955A1 (en) * | 2008-09-01 | 2011-08-11 | Steffen Abraham | Chassis testing unit and method for testing a chassis |
| CN105466659A (en) * | 2016-01-31 | 2016-04-06 | 中信戴卡股份有限公司 | Method for conducting simulated actual impact test on wheels |
| CN208171610U (en) * | 2018-05-31 | 2018-11-30 | 重庆长安汽车股份有限公司 | It is a kind of for simulating the rigid obstacle of side road shoulder impact test |
| CN109282974A (en) * | 2017-07-21 | 2019-01-29 | 郑州宇通客车股份有限公司 | The method of vehicle frame fast verification |
| CN110359507A (en) * | 2019-08-12 | 2019-10-22 | 河南省第三公路工程有限公司 | Authentic scene collision detecting device and application method |
-
2019
- 2019-12-30 CN CN201911393810.7A patent/CN113125162A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR19990012705A (en) * | 1997-07-30 | 1999-02-25 | 경덕호 | Driving record data storage method and storage device |
| CN1570589A (en) * | 2004-05-10 | 2005-01-26 | 林武 | Chassis test bench for cars |
| US20110193955A1 (en) * | 2008-09-01 | 2011-08-11 | Steffen Abraham | Chassis testing unit and method for testing a chassis |
| CN105466659A (en) * | 2016-01-31 | 2016-04-06 | 中信戴卡股份有限公司 | Method for conducting simulated actual impact test on wheels |
| CN109282974A (en) * | 2017-07-21 | 2019-01-29 | 郑州宇通客车股份有限公司 | The method of vehicle frame fast verification |
| CN208171610U (en) * | 2018-05-31 | 2018-11-30 | 重庆长安汽车股份有限公司 | It is a kind of for simulating the rigid obstacle of side road shoulder impact test |
| CN110359507A (en) * | 2019-08-12 | 2019-10-22 | 河南省第三公路工程有限公司 | Authentic scene collision detecting device and application method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115144147A (en) * | 2022-09-01 | 2022-10-04 | 江铃汽车股份有限公司 | Road impact endurance test method based on whole vehicle power assembly |
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