An Update on the Momentum 360 Method of Vehicle Impact Reconstruction through 3D Modeling and Computer Simulation
Although vehicles as a whole are symmetric, car crashes rarely follow the symmetric line (crashes are axisymmetric). In this paper, we examine car crashes by an updated Momentum 360 method, and car symmetry helps us easily find out what happens within the accident. We propose an improvement of the M...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2022-12-01
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| Series: | Symmetry |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2073-8994/14/12/2628 |
| _version_ | 1797455149218660352 |
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| author | Stanimir Karapetkov Lubomir Dimitrov |
| author_facet | Stanimir Karapetkov Lubomir Dimitrov |
| author_sort | Stanimir Karapetkov |
| collection | DOAJ |
| description | Although vehicles as a whole are symmetric, car crashes rarely follow the symmetric line (crashes are axisymmetric). In this paper, we examine car crashes by an updated Momentum 360 method, and car symmetry helps us easily find out what happens within the accident. We propose an improvement of the Momentum 360 method by taking into account the frictional forces between the wheels and the road surface during the time of impact. According to the momentum change theorem for the duration of the impact for each car and the kinetic moment change theorem for the relative motion of the given vehicle around its center of mass, the impact problem is introduced and solved. The solution considers the impulses of the principal vectors of the wheel friction forces, the gravity force, and the aerodynamic force for each car at the time of impact, as well as the principal moments of the friction forces between the tires and the road surface as a function of time. A mechano-mathematical multi-mass 3D model and a computer simulation of the movement (“Expertcar” software) are used to study the movement of each vehicle after the impact. Through successive approximations, the velocity vectors of the mass centers of the vehicle immediately before the impact are determined, and the location of the impact is identified. The presented decision model significantly improves the accuracy of road accident investigations. |
| first_indexed | 2024-03-09T15:47:23Z |
| format | Article |
| id | doaj.art-18a5232924e44accb0494c949d072e53 |
| institution | Directory Open Access Journal |
| issn | 2073-8994 |
| language | English |
| last_indexed | 2024-03-09T15:47:23Z |
| publishDate | 2022-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Symmetry |
| spelling | doaj.art-18a5232924e44accb0494c949d072e532023-11-24T18:20:21ZengMDPI AGSymmetry2073-89942022-12-011412262810.3390/sym14122628An Update on the Momentum 360 Method of Vehicle Impact Reconstruction through 3D Modeling and Computer SimulationStanimir Karapetkov0Lubomir Dimitrov1Faculty of Engineering and Pedagogy, Technical University of Sofia, 1000 Sofia, BulgariaFaculty of Engineering and Pedagogy, Technical University of Sofia, 1000 Sofia, BulgariaAlthough vehicles as a whole are symmetric, car crashes rarely follow the symmetric line (crashes are axisymmetric). In this paper, we examine car crashes by an updated Momentum 360 method, and car symmetry helps us easily find out what happens within the accident. We propose an improvement of the Momentum 360 method by taking into account the frictional forces between the wheels and the road surface during the time of impact. According to the momentum change theorem for the duration of the impact for each car and the kinetic moment change theorem for the relative motion of the given vehicle around its center of mass, the impact problem is introduced and solved. The solution considers the impulses of the principal vectors of the wheel friction forces, the gravity force, and the aerodynamic force for each car at the time of impact, as well as the principal moments of the friction forces between the tires and the road surface as a function of time. A mechano-mathematical multi-mass 3D model and a computer simulation of the movement (“Expertcar” software) are used to study the movement of each vehicle after the impact. Through successive approximations, the velocity vectors of the mass centers of the vehicle immediately before the impact are determined, and the location of the impact is identified. The presented decision model significantly improves the accuracy of road accident investigations.https://www.mdpi.com/2073-8994/14/12/2628traffic accidentvehicle impactaccident reconstructionmomentum 360 method |
| spellingShingle | Stanimir Karapetkov Lubomir Dimitrov An Update on the Momentum 360 Method of Vehicle Impact Reconstruction through 3D Modeling and Computer Simulation Symmetry traffic accident vehicle impact accident reconstruction momentum 360 method |
| title | An Update on the Momentum 360 Method of Vehicle Impact Reconstruction through 3D Modeling and Computer Simulation |
| title_full | An Update on the Momentum 360 Method of Vehicle Impact Reconstruction through 3D Modeling and Computer Simulation |
| title_fullStr | An Update on the Momentum 360 Method of Vehicle Impact Reconstruction through 3D Modeling and Computer Simulation |
| title_full_unstemmed | An Update on the Momentum 360 Method of Vehicle Impact Reconstruction through 3D Modeling and Computer Simulation |
| title_short | An Update on the Momentum 360 Method of Vehicle Impact Reconstruction through 3D Modeling and Computer Simulation |
| title_sort | update on the momentum 360 method of vehicle impact reconstruction through 3d modeling and computer simulation |
| topic | traffic accident vehicle impact accident reconstruction momentum 360 method |
| url | https://www.mdpi.com/2073-8994/14/12/2628 |
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