CN1724971A - Automobile collision accident reappear method based on car body key point three-dimension distorsion - Google Patents
Automobile collision accident reappear method based on car body key point three-dimension distorsion Download PDFInfo
- Publication number
- CN1724971A CN1724971A CN 200510027720 CN200510027720A CN1724971A CN 1724971 A CN1724971 A CN 1724971A CN 200510027720 CN200510027720 CN 200510027720 CN 200510027720 A CN200510027720 A CN 200510027720A CN 1724971 A CN1724971 A CN 1724971A
- Authority
- CN
- China
- Prior art keywords
- key point
- accident
- vehicle body
- method based
- collision
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The invention relates to reappear three dimensional deformation of a vehicle body in a collision accident, including the steps: building an accident occurrence environment and finite element models for the related vehicles in the accident; verifying the reliability of the finite element models; selecting vehicle body key points adaptive to head-on collision and oblique collision and processing the holes in a numeric model; using three-coordinate measurer to physically measure the fixed key point positions; to a finite element model for the whole vehicle, adopting key point deforming measuring method; by multiple iterative optimization calculation, if finding the numeric simulated result of the deformed key points is consistent with the actual collision measured result at a certain speed and collision angle, determining the accurate automobile speed and collision angle at the occurring time of the accident. The invention can recover the accident on the condition that the trace of the wheels and other field information are destroyed or not clear, and has better objectivity because of making three-dimensional measurement on the measured points of the main energy absorbing components.
Description
Technical field
The present invention relates to a kind of accident reconstruction method that is used for field of traffic, specifically is a kind of automobile collision accident reproducting method based on vehicle body key point 3 D deformation.
Background technology
For automobile collision accident is reproduced analysis, usually from a plurality of angles such as energy, momentum, according to the characteristic parameter (as vehicle deformation characteristic, the coefficient of resilience, surface of contact friction factor, center of impact etc.) of encounter stage and from the image of accident shooting, utilization lumped parameter model method and multi-rigid-body system dynamic method carry out crash analysis, and crash analysis method commonly used in the world at present comprises momentum/Energy Analysis for High and distortion/Energy Analysis for High.In addition, projected object throwing pitch analysis method, geometry and time series analysis method and centrifugal force analytical approach etc. are also used under given conditions.
Find that through the retrieval to prior art Pei Jianping, Wu Weidong are at " Communication and Transportation Engineering journal " 2001, NO.1 (4): " the traffic accident reconstruction collision model summary " delivered on 75 ~ 78 is illustrated international accident reconstruction method in this article.Momentum/Energy Analysis for High mainly relies on the braking automobile trace, mainstream car design has been installed ABS now, therefore be difficult to obtain the brake trace of complete display, in addition, the driver may cause the destruction to the scene of the accident under unconscious or nervous situation after accident takes place, thereby the accuracy for critical datas such as braking marks will damage investigation and evidence collection and the just processing that badly influences traffic hazard, on the other hand, for the scene of the accident, may be subjected to the destruction of weather (rainwater), vehicular traffic (personnel) and artificial aspect.Also mention distortion/Energy Analysis for High in this article, this method is considered from the body distortion angle, but the linear approximate relationship between body distortion and the movement velocity is only effective within the specific limits, and body distortion measurement amount is carried out two-dimensional measurement from exterior contour, because the complicacy of car crass environment, the distortion of exterior contour may be subjected to the influence of a lot of accidentalia, for example rough surface in contact, outstanding masonry etc., therefore the difference of outside accidentalia may cause bigger influence to measurement result.
Therefore, utilize the interior of body 3 D deformation to carry out accident reconstruction under brake trace or the brake trace unsharp situation to become the technical matters that presses for solution lacking.
Summary of the invention
The present invention is directed to above shortcomings and defective in the prior art, a kind of automobile collision accident reproducting method based on vehicle body key point 3 D deformation is provided.Make it solve the reproduction analysis to traffic hazard when unintelligible of do not brake trace or brake trace.
The present invention is achieved by the following technical solutions, the present invention includes following steps:
(1) sets up the finite element model of involved vehicle in accident generation environment and the accident;
For head-on crash or angular impact, the body forward structure grid need give refinement, and element length must then can suitably be simplified for the body tail grid less than 10mm, connects in strict accordance with truth between each vehicle body model of parts simultaneously;
(2) the car load finite element model of setting up is carried out the reliability of 50km/h frontal collision test checking with the check finite element model according to the requirement of standard GB 11551;
(3) choosing the vehicle body key point that is applicable to head-on crash and angular impact and the hole in the logarithm value model handles;
Vehicle body key point deflection is measured mudguard that choosing of mesopore mainly concentrate on body forward structure and main bolt hole and the pilot hole in the front longitudinal, select former because mudguard is taken place directly to contact by the collision thing as main energy-absorbing parts discord with front longitudinal, therefore the measurement for deflection has more objectivity.In numerical model, kept for the hole of diameter greater than 20mm, can calculate central coordinate of circle by circular hole periphery three nodes; Carry out elimination of hidden for diameter less than the hole of 20mm, manually node is dropped on the center of bolt hole simultaneously.
(4), use three-coordinates measuring machine to carry out physical measurement for the key point position of determining;
For the key point three-dimensional method of measuring in kind is at first to measure the coordinate of key point by the car of vehicle body design drawing or same model.Use the crash three-dimensional coordinate of the corresponding key point of vehicle of three-coordinates measuring machine measurement then.Can know the deflection of each point by subtraction of vector, when concrete calculating, will not consider direction vector so that calculate.
(5), the deformation measurement method of key point is proposed for the car load finite element model;
For head-on crash or angular impact, deform hardly at body tail, therefore, at first do three orthogonal planes as reference face at vehicle body finite element model rear portion.
Suppose that the initial absolute coordinates of certain key point q is (x
1, y
1, z
1), this point is apart from orthogonal reference surface α, the distance of β and γ face is respectively l, and m and n are when motor racing, because body tail does not deform, can think that original three faces still keep mutually perpendicular relation, establish after the steady-state deformation these three and be α ', β ' and γ ', can obtain being out of shape the absolute coordinates of back each point respectively by nine nodes determining three reference surface, make up orthogonal three new reference surface planes by these 9 then.And the q point moves to q ' some position after vehicle body deforms, and supposes q ' apart from α ', and the distance of β ' and γ ' is respectively l ', m ' and n '.Can think that then the deflection d of key point q in accident is:
(6) pass through repeatedly iteration optimization and calculate, obtain under certain speed and collision angle condition, the numerical simulation result of key point distortion is consistent with true collision measurement result, thereby car speed and collision angle accurately take place constantly definite accident.
The initial range of at first clear and definite car speed and angle, in this scope, carry out iterative computation as independent variable according to a fixed step size with speed and angle, obtain the deflection of each key point in each analog result, compare actual measured results and numerical simulation result according to accident reconstruction degree formula, when the deflection of key point in numerical simulation result and the true casualty effect near the time, think that then the car speed of this analog result correspondence and angle are real impact velocity and angle.
Accident reconstruction degree E formula, E=1-(∑ (x
Ie-x
Ic)
2/ (∑ x
IeX
Ie))
Wherein, x
IeBe the practical distortion amount that key point records, x
IcThe deflection calculated value that obtains by numerical simulation for the key point position.
In the following formula, the E value is big more, illustrates that the accident reconstruction result is more near truth.With accident reconstruction degree E is objective function, as optimization variable, by selecting the computing that iterates of suitable optimization method, makes the E value reach maximum movement velocity size and Orientation before the car crass.
Because the limitation of numerical simulation, simulation result and truly collide between the result and can not fit like a glove, can reflect gap between accident reconstruction result and the legitimate reading qualitatively from the size of E value, reflect velocity variations and angle simultaneously and change the trend that influences the E value.For the definition of E value, when numerical simulation result when the legitimate reading, the E value levels off to " 1 ".
The existing constant interval of E value is [a, 1], wherein a can on the occasion of, also can be negative value, concrete numerical value is by the degree of closeness decision of simulation result with true collision accident.
The present invention carries out accident reconstruction by vehicle body key point distortion, has following advantage: 1, can solve under the destroyed or unsharp situation of scene of the accident information such as brake trace the problem that accident reconstruction method commonly used cann't be solved; 2, using Finite Element Method can carry out three-dimensional investigation directly perceived to the distortion of the crucial energy-absorbing parts of vehicle body in true accident, can provide reference for Automobile Design department; 3, application finite element accident reconstruction method can be hurt to human body in the accident and carry out numerical simulation and evaluation, and the evaluation of hindering for accident provides theoretical foundation and numeric reference; 4, classic method is only evenly adopted point measurement to the vehicle body outline, measurement result is subjected to the interference of protrusions such as different contact object and masonry easily, and main difference is that traditional measurement method is two-dimensional measurement, carry out three-dimensional measurement and this method is a measurement point to main energy-absorbing parts, have more objectivity.
Description of drawings
Fig. 1 embodiment of the invention scene of the accident environment finite element model
Fig. 2 embodiment of the invention mudguard and front longitudinal key point chosen position
Embodiment
The present invention selects body distortion to measure key point according to the characteristics (head-on crash, side collision etc.) of collision accident and the difference (Che-Che, car-people, car-fixture etc.) of colliding object, provides accident evaluation index: x
1, x
2..., x
nThese evaluation indexes have reflected the deflection of key point in collision process in the main energy-absorbing parts.With head-on crash and angular impact is example, chooses bolt hole on body forward structure front longitudinal and the mudguard and pilot hole as the key point of measuring.
Investigate and measure the three-dimensional coordinates measurement value that can obtain these key points: x according to the scene of the accident
1e, x
2e..., x
Ne
Can obtain the numerical simulation value of respective point: x by computer simulation
1c, x
2c..., x
Nc
Definition accident reconstruction degree E, shown in following formula:
E＝1-(∑(x
ie-x
ic)
2/(∑x
ie·x
ie))
In the following formula, the E value is big more, illustrates that the accident reconstruction result is more near truth.With accident reconstruction degree E is objective function, as optimization variable, by selecting the computing that iterates of suitable optimization method, makes the E value reach maximum movement velocity size and Orientation before the car crass.
Because the limitation of numerical simulation, simulation result and truly collide between the result and can not fit like a glove, can reflect gap between accident reconstruction result and the legitimate reading qualitatively from the size of E value, reflect velocity variations and angle simultaneously and change the trend that influences the E value.For the definition of E value, when numerical simulation result when the legitimate reading, the E value levels off to " 1 ".
Provide specific embodiment below in conjunction with content of the present invention:
With typical car-fixture collision accident together is example, sets up the finite element model of car load and impact environment, and as shown in Figure 1, the reliability of car load finite element model has obtained the verification experimental verification of real vehicle head-on crash rigid wall (v=50km/h);
Choose on the crucial energy-absorbing parts of the body forward structure mudguard seven key points that bolt hole is measured as deflection on four pilot holes and the front longitudinal, on the main energy-absorbing parts of vehicle body finite element model, the disposal route in hole is for to be kept for the hole of diameter greater than 20mm, as measuring key point, this class point has four with the home position in hole, and all on mudguard, its node serial number is respectively 15090X, 15091X, 15167X, 15179X.Diameter is carried out elimination of hidden less than hole and the bolt hole of 20mm, and as seven points on the front longitudinal, its node serial number is respectively 156840,156841, and 156842,156843,156844,156845,156846.Key point is chosen, as shown in Figure 2;
Can use three-coordinates measuring machine to carry out the measurement of true body distortion amount to the actual measurement of measurement point, the three-coordinates measuring machine measurement result is as shown in table 1;
The coordinate of key point before and after table 1 accident takes place
| Classification | Coordinate before collision accident takes place | The back coordinate takes place in collision accident | Deflection mm | |
| Numbering | Node number | (x，y，z) | (x′，y′，z′) | |
| 1 | 15090X | (116，-405.09，88) | (129.33，-404.85，101.41) | 18.91 |
| 2 | 15091X | (-132，-406.52，73) | (-118.27，-412-76，84.14) | 18.75 |
| 3 | 15167X | (124.54，-413.64，245) | (135.50，-411.12，257.64) | 16.92 |
| 4 | 15179X | (85，-442.34，307.97) | (95.01，-438.28，320.26) | 16.36 |
| 5 | 156840 | (-263.36，-351.1，106.5) | (-229.08，-346.89，74.05) | 47.39 |
| 6 | 156841 | (-606，-497.86，174) | (-402.23，-499.92，213.74) | 207.62 |
| 7 | 156842 | (-630，-497.31，200) | (-425.13，-512.77，241.63) | 209.63 |
| 8 | 156843 | (-681，-575，128.8) | (-466.95，-594.62，172.40) | 219.32 |
| 9 | 156844 | (-600，-555，138.45) | (-386.44，-571.39，180.96) | 218.37 |
| 10 | 156845 | (-462.54，-569.65，138.44) | (-252.81，-579.84，157.91) | 210.88 |
| 11 | 156846 | (-230，-366，-0.012) | (-213.53，-383.75，5.39) | 24.81 |
Can judge that by the scene of the accident angle maximum between automobile and the enclosure wall is no more than 53 °, minimum is not less than 5 °.Can determine that by tentative calculation car crass body of wall speed interval constantly is 30km/h～78km/h.
By iterative computation repeatedly obtain when car be 17 ° with the enclosure wall angle, the collision time of contact speed of a motor vehicle is that automobile deformed numerical simulation result is the most approaching with true casualty effect under the 50km/h situation, at this moment E=0.9985.The present invention can be implemented in do not brake trace or brake trace when unintelligible to the reproduction analysis of traffic hazard.
Claims (9)
1, a kind of automobile collision accident reproducting method based on vehicle body key point 3 D deformation is characterized in that:
(1) sets up the finite element model of involved vehicle in accident generation environment and the accident;
(2) reliability of checking finite element model;
(3) choosing the vehicle body key point that is applicable to head-on crash and angular impact and the hole in the logarithm value model handles;
(4), use three-coordinates measuring machine to carry out physical measurement for the key point position of determining;
(5), adopt the deformation measurement method of key point for the car load finite element model;
(6) pass through repeatedly iteration optimization and calculate, obtain under certain speed and collision angle condition, the numerical simulation result of key point distortion is consistent with true collision measurement result, thereby car speed and collision angle accurately take place constantly definite accident.
2, the automobile collision accident reproducting method based on vehicle body key point 3 D deformation according to claim 1, it is characterized in that, described step (1), specifically refer to: for head-on crash or angular impact, the body forward structure grid needs refinement, element length must then can be simplified for the body tail grid less than 10mm, connects in strict accordance with truth between each vehicle body model of parts simultaneously.
3, the automobile collision accident reproducting method based on vehicle body key point 3 D deformation according to claim 1, it is characterized in that, described step (2) specifically refers to: the car load finite element model of setting up is carried out the reliability of 50km/h frontal collision test checking with the check finite element model according to the requirement of standard GB 11551.
4, the automobile collision accident reproducting method based on vehicle body key point 3 D deformation according to claim 1, it is characterized in that, described step (3), specifically refer to: vehicle body key point deflection is measured mudguard that choosing of mesopore mainly concentrate on body forward structure and main bolt hole and the pilot hole in the front longitudinal, in numerical model, kept for the hole of diameter, calculated central coordinate of circle by circular hole periphery three nodes greater than 20mm; Carry out elimination of hidden for diameter less than the hole of 20mm, manually node is dropped on the center of bolt hole simultaneously.
5, the automobile collision accident reproducting method based on vehicle body key point 3 D deformation according to claim 1, it is characterized in that, described step (4), specifically refer to: the coordinate of at first measuring key point by the car of vehicle body design drawing or same model, use the crash three-dimensional coordinate of the corresponding key point of vehicle of three-coordinates measuring machine measurement then, obtain the deflection of each point by subtraction of vector.
6, the automobile collision accident reproducting method based on vehicle body key point 3 D deformation according to claim 1 is characterized in that, described step (5) is implemented as follows:
At first do three orthogonal planes at vehicle body finite element model rear portion as reference face, establishing the initial absolute coordinates of certain key point q is x
1, y
1, z
1This point is respectively l, m and n apart from the distance of orthogonal reference surface α, β and γ face, when motor racing, if these three is α ' after the steady-state deformation, β ' and γ ', obtain being out of shape the absolute coordinates of back each point respectively by nine nodes determining three reference surface, make up orthogonal three new reference surface planes by these 9 then, and the q point moves to q ' some position after vehicle body deforms, if q ' is apart from α ', the distance of β ' and γ ' is respectively l ', m ' and n ', and then the deflection d of key point q in accident is:
7, automobile collision accident reproducting method based on vehicle body key point 3 D deformation according to claim 1, it is characterized in that, described step (6), specifically refer to: the initial range of at first clear and definite car speed and angle, in this scope, carry out iterative computation as independent variable with speed and angle, obtain the deflection of each key point in each analog result, compare actual measured results and numerical simulation result according to accident reconstruction degree E formula, when the deflection of key point in numerical simulation result and the true casualty effect near the time, think that then the car speed of this analog result correspondence and angle are real impact velocity and angle.
8, the automobile collision accident reproducting method based on vehicle body key point 3 D deformation according to claim 7 is characterized in that, described accident reconstruction degree E formula is specific as follows:
E＝1-(∑(x
ie-x
ic)
2/(∑x
ie·x
ie))
x
IeBe the practical distortion amount that key point records, x
IcBe the deflection calculated value that the key point position obtains by numerical simulation, the E value is big more, illustrates that the accident reconstruction result is more near truth.
9, the automobile collision accident reproducting method based on vehicle body key point 3 D deformation according to claim 8, it is characterized in that, described E value, when numerical simulation result when the legitimate reading, the E value levels off to " 1 ", and the existing constant interval of E value is [a, 1], wherein a be on the occasion of or negative value, concrete numerical value is by the degree of closeness decision of simulation result with true collision accident.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510027720 CN1724971A (en) | 2005-07-14 | 2005-07-14 | Automobile collision accident reappear method based on car body key point three-dimension distorsion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510027720 CN1724971A (en) | 2005-07-14 | 2005-07-14 | Automobile collision accident reappear method based on car body key point three-dimension distorsion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1724971A true CN1724971A (en) | 2006-01-25 |
Family
ID=35924536
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510027720 Pending CN1724971A (en) | 2005-07-14 | 2005-07-14 | Automobile collision accident reappear method based on car body key point three-dimension distorsion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1724971A (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101173856B (en) * | 2007-08-30 | 2010-10-27 | 上海交通大学 | Vehicle collision accident reappearance method based on phototopography and exterior profile deformation of car body |
| CN102156767A (en) * | 2010-12-31 | 2011-08-17 | 长安大学 | Automobile and ground fixed object collision accident analytical calculation and simulation reproduction system |
| CN102236908A (en) * | 2011-07-18 | 2011-11-09 | 长安大学 | Vehicle iterative collision accident analysis, calculation, simulation and reconstruction system |
| CN101571370B (en) * | 2008-12-23 | 2012-04-18 | 中国汽车技术研究中心 | Measuring method for vehicle body deformation amount in vehicle crash test |
| CN101726419B (en) * | 2009-11-10 | 2012-06-27 | 肖锋 | Method for measuring and calculating intrusion quantity of firewall in front collision test of automobile and drawing nephogram |
| CN103017722A (en) * | 2012-09-26 | 2013-04-03 | 浙江吉利汽车研究院有限公司杭州分公司 | CAE (Computer Aided Engineering)-based method for measuring vehicle body deformation by simulating head-on collision |
| CN106027865A (en) * | 2016-06-14 | 2016-10-12 | 北京钛方科技有限责任公司 | Vehicle collision alarming and recording triggering device and detection method thereof |
| CN107153363A (en) * | 2017-05-08 | 2017-09-12 | 百度在线网络技术（北京）有限公司 | The emulation test method and device of pilotless automobile, equipment and computer-readable recording medium |
| CN108050981A (en) * | 2017-12-28 | 2018-05-18 | 上海交通大学 | A kind of three coordinate measuring engine measurement method of complex part surface planarity measurement |
| CN109977986A (en) * | 2018-12-21 | 2019-07-05 | 长沙理工大学 | A kind of multi-source unascertained information is got off people's collision accident speed identification method |
| CN111649686A (en) * | 2019-12-04 | 2020-09-11 | 西华大学 | High-precision vehicle collision deformation measuring method |
| CN112525554A (en) * | 2020-12-18 | 2021-03-19 | 奇瑞汽车股份有限公司 | Method and device for determining collision angle of automobile and computer storage medium |
| CN113418673A (en) * | 2021-07-30 | 2021-09-21 | 岚图汽车科技有限公司 | Vehicle B-pillar fracture test method and system |
-
2005
- 2005-07-14 CN CN 200510027720 patent/CN1724971A/en active Pending
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101173856B (en) * | 2007-08-30 | 2010-10-27 | 上海交通大学 | Vehicle collision accident reappearance method based on phototopography and exterior profile deformation of car body |
| CN101571370B (en) * | 2008-12-23 | 2012-04-18 | 中国汽车技术研究中心 | Measuring method for vehicle body deformation amount in vehicle crash test |
| CN101726419B (en) * | 2009-11-10 | 2012-06-27 | 肖锋 | Method for measuring and calculating intrusion quantity of firewall in front collision test of automobile and drawing nephogram |
| CN102156767A (en) * | 2010-12-31 | 2011-08-17 | 长安大学 | Automobile and ground fixed object collision accident analytical calculation and simulation reproduction system |
| CN102236908A (en) * | 2011-07-18 | 2011-11-09 | 长安大学 | Vehicle iterative collision accident analysis, calculation, simulation and reconstruction system |
| CN103017722A (en) * | 2012-09-26 | 2013-04-03 | 浙江吉利汽车研究院有限公司杭州分公司 | CAE (Computer Aided Engineering)-based method for measuring vehicle body deformation by simulating head-on collision |
| CN103017722B (en) * | 2012-09-26 | 2015-11-04 | 浙江吉利汽车研究院有限公司杭州分公司 | A kind of method of the head-on crash simulated measurement body distortion amount based on CAE |
| CN106027865A (en) * | 2016-06-14 | 2016-10-12 | 北京钛方科技有限责任公司 | Vehicle collision alarming and recording triggering device and detection method thereof |
| CN107153363A (en) * | 2017-05-08 | 2017-09-12 | 百度在线网络技术（北京）有限公司 | The emulation test method and device of pilotless automobile, equipment and computer-readable recording medium |
| CN108050981A (en) * | 2017-12-28 | 2018-05-18 | 上海交通大学 | A kind of three coordinate measuring engine measurement method of complex part surface planarity measurement |
| CN109977986A (en) * | 2018-12-21 | 2019-07-05 | 长沙理工大学 | A kind of multi-source unascertained information is got off people's collision accident speed identification method |
| CN109977986B (en) * | 2018-12-21 | 2022-10-28 | 长沙理工大学 | Vehicle speed identification method for pedestrian collision accident under multi-source uncertainty information |
| CN111649686A (en) * | 2019-12-04 | 2020-09-11 | 西华大学 | High-precision vehicle collision deformation measuring method |
| CN111649686B (en) * | 2019-12-04 | 2021-06-22 | 西华大学 | High-precision vehicle collision deformation measuring method |
| CN112525554A (en) * | 2020-12-18 | 2021-03-19 | 奇瑞汽车股份有限公司 | Method and device for determining collision angle of automobile and computer storage medium |
| CN113418673A (en) * | 2021-07-30 | 2021-09-21 | 岚图汽车科技有限公司 | Vehicle B-pillar fracture test method and system |
| CN113418673B (en) * | 2021-07-30 | 2022-04-29 | 岚图汽车科技有限公司 | Vehicle B-pillar fracture test method and system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1724971A (en) | Automobile collision accident reappear method based on car body key point three-dimension distorsion | |
| Evtiukov et al. | Finite element method for reconstruction of road traffic accidents | |
| Ishikawa | Impact model for accident reconstruction-normal and tangential restitution coefficients | |
| Rosenberger et al. | Benchmarking and functional decomposition of automotive lidar sensor models | |
| Cipriani et al. | Low speed collinear impact severity: a comparison between full scale testing and analytical prediction tools with restitution analysis | |
| Karapetkov et al. | Identifying vehicle and collision impact by applying the principle of conservation of mechanical energy | |
| Zaouk et al. | Development of a detailed vehicle finite element model part I: methodology | |
| CN108920757A (en) | A kind of Problem in Vehicle Crash Accident Reconstruction method based on Computer Simulation | |
| Karapetkov et al. | Examination of vehicle impact against stationary roadside objects | |
| Brach | Impact analysis of two-vehicle collisions | |
| CN105759078A (en) | Triaxial self calibration method and device for vehicle-mounted acceleration sensor | |
| CN114387818A (en) | Traffic unit safety evaluation method based on incomplete elastic collision theory | |
| Prasad | Energy absorbed by vehicle structures in side-impacts | |
| Steinwoff et al. | Limitations of the Fourier transform for describing test course profiles | |
| WO2022239456A1 (en) | Method and program for measuring body deformation in collision analysis for automotive vehicle | |
| CN102129383B (en) | Vehicle crash-falling composite accident analysis calculation and simulation reconstruction computer system | |
| CN114926729A (en) | High-risk road section identification system and method based on driving video | |
| CN114923649A (en) | Vehicle body composite vibration identification method based on test and simulation technology | |
| CN113806971A (en) | SUV (vehicle speed Up Voltage) frontal collision test and analysis method based on vehicle finite element | |
| Warner et al. | A repeated-crash test technique for assessment of structural impact behavior | |
| Lang et al. | Vehicle continuous collision accident reconstruction system development | |
| Ruihong et al. | Numerical reconstruction for a multi-car collision dynamics | |
| Varunjikar et al. | Multi-body vehicle dynamics simulation based on measured 3D terrain data | |
| Wach | Monte Carlo method in analysis of road accidents versus interpretation of calculation results | |
| CN112406880B (en) | Road surface space curved surface flatness calculation method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |