Study regarding seat’s rigidity during rear end collisions using a MADYMO occupant model

Radu, Alexandru Ionut; Cofaru, Corneliu; Tolea, Bogdan; Popescu, Mihaela

doi:10.1088/1757-899x/252/1/012004

Cited by 4 publications

(3 citation statements)

References 3 publications

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“…Therefore, computer software such as PC-CRASH and MADYMO is often used in the early stage where the kinetic principle is applied to simulate the process of the accident to meet the final location of the vehicle in the accident. Sometimes the accuracy can't be guaranteed since it is only a compromise that real accident process can't be observed [7,8]. With the popularization of urban road surveilling system and driving recorder, the occurrence of a large number of traffic accidents is recorded and saved.…”

Section: Resultsmentioning

confidence: 99%

Study on Vehicle Location in Road Traffic Accident Based on Surveillance Video and Vanishing Point

Duan¹,

Liu²,

Jia³

et al. 2018

Proceedings of the 2018 International Conference on Mechanical, Electronic, Control and Automation Engineering (MECAE 2018)

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To solve the problem that it is difficult to obtain the accurate locations of target objects directly by the surveillance video in Road Traffic Accidents, this paper presents a method of measuring the relative position of vehicles on the road surface by using vanishing point principle to mesh the surveillance video frames. In a road traffic accident with surveillance video, this method was applied to analyze the dynamic positional relationship between vehicles and marking lines on the road surface. The accurate moving tracks of 2 vehicles involved were obtained and the measurement accuracy was verified. The result shows that the measurement errors are less than 3%, proving that this method has a guiding effect on obtaining the accurate locations of vehicles in Road Traffic Accidents. It can be applied to traffic accidents with surveillance video to determine the accurate locations of target objects in the process, thus providing necessary data for subsequent accident reconstruction and injury reconstruction.

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Section: Resultsmentioning

confidence: 99%

Study on Vehicle Location in Road Traffic Accident Based on Surveillance Video and Vanishing Point

Duan¹,

Liu²,

Jia³

et al. 2018

Proceedings of the 2018 International Conference on Mechanical, Electronic, Control and Automation Engineering (MECAE 2018)

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“…(3) Effective spring rate of seat belt is constant. (4) Seat belt stretches in horizontal direction (Radu et al, 2017). This implies that the rotation angle of the upper torso can be assumed to be small.…”

Section: Multi-degree-of-freedom (Mdof) Compliant Occupant (Co) Modelmentioning

confidence: 99%

Influence of biomechanical compliance on control performance of a magnetorheological sliding seat system

Mao

Choi

Wereley

et al. 2023

Journal of Intelligent Material Systems and Structures

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We investigate the feasibility of a sliding seat with a magnetorheological (MR) energy absorber (MREA) to minimize loads transmitted to a payload in a ground vehicle for frontal impact speeds ranging as high as 7 m/s (15.7 mph). The crash pulse for a given impact speed was assumed to be a rectangular deceleration pulse having a prescribed magnitude and duration. The control objective is to bring the seat system to rest using the available stroke, while accommodating changes in impact velocity and occupant mass ranging from a 5th percentile female to a 95th percentile male. The seat system was first treated as a single-degree-of-freedom (SDOF) rigid occupant (RO) model, and two control algorithms are developed: (1) constant Bingham number control and (2) constant force control. To explore the effects of occupant compliance on the adaptive seat system performance, a multi-degree-of-freedom (MDOF) compliant occupant (CO) model was integrated with the seat mass and the same control algorithms were used. Simulation results showed that the designed adaptive controllers successfully controlled load-stroke profiles to bring the seat system to rest in the available stroke and reduced occupant decelerations. Analysis showed extensive coupling between the seat structures and occupant biodynamic response.

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“…Radu et al [6] investigated the effect of the recliner rotational stiffness of the seatback on the head and neck response. The softer seat's rigidity would reduce the head's acceleration and the whiplash injuries due to the increase of the angular displacement of the seatback, resulting in the more absorption of collision energy.…”

Section: Introductionmentioning

confidence: 99%

Research on the Driver Neck Movement and Injury in the Late Stage of Frontal Collision

Hong

Liu

Chen³

2021

Teh. vjesn.

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The aim of this study is to investigate the driver's neck movement and injuries in the late stage of frontal collision. Firstly, the simulation model of the driver restraint system was developed and validated. Secondly, the design parameters of airbag and safety belt were optimized globally in the early stage of frontal collision. Finally, the driver's neck movement state and the effects of the design parameters of driver seat on the neck injuries in the late stage of frontal collision were studied. The movement state of the driver's upper and lower neck could be divided into three phases, and the peak extension bending moments of the upper and lower neck all occur in the second phase. By reducing the headrest stiffness and the upper seatback stiffness of driver seat, the rotational stiffness of the seatback recliner of driver seat, the upper and lower neck injuries can be decreased significantly.

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Study regarding seat’s rigidity during rear end collisions using a MADYMO occupant model

Cited by 4 publications

References 3 publications

Study on Vehicle Location in Road Traffic Accident Based on Surveillance Video and Vanishing Point

Study on Vehicle Location in Road Traffic Accident Based on Surveillance Video and Vanishing Point

Influence of biomechanical compliance on control performance of a magnetorheological sliding seat system

Research on the Driver Neck Movement and Injury in the Late Stage of Frontal Collision

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