Study of vehicle crashes into a rigid barrier

Kostek, Robert; Aleksandrowicz, Piotr

doi:10.1139/tcsme-2018-0057

Cited by 5 publications

(4 citation statements)

References 10 publications

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“…Moreover, the position of wheels can be changed during a collision or they can even be detached from the surface. However, in modelling, there can occur simplifications that should be taken into consideration by experts who perform simulations as shown in the works [26,27]. Otherwise, the results obtained from a simulation performed on the basis of default data proposed by the program may be incorrect and the outcome of a claim verification by the SDC method will be incorrect.…”

Section: Simplifications Of Collision Models In Sdc Dynamic Verificationmentioning

confidence: 99%

Collision Model Simplifications in the Dynamic Analysis With the SDC Method

Aleksandrowicz

2020

Transport Problems

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The number of motor vehicles in the European Union (EU) is constantly increasing, which is causing an increase in the traffic volume. This, in turn, boosts the economic development of the EU member states. However, an increase in traffic volume leads to road collisions and accidents, which lead to high repair costs. Some accident victims report fake vehicle damage to extort money for repairs. There are criminal groups that stage accidents for this purpose; thus, these claims are very difficult to verify. Thus, it is not enough to verify the sustained damage only by comparing the geometric parameters of the impact traces. New, modern research methods with simulation programs need to be used in order to reconstruct the course of an accident. The SDC (Static Dynamic Characteristic method) provides the possibility of vehicle damage verification, according to this convention. However, simplified modelling with the use of simulation programs involves the necessity of identification of input parameters in order to reconstruct a collision and the vehicle's post-collision movement. If the input parameters are not correct, the simulation results will also be incorrect, which will have a direct impact on the parties involved in potential legal proceedings, both civil and criminal. This study deals with the identification of the impact parameters and sensitivity of the simulation results to input data. Impact verification with the SDC method shows both a knowledge enhancement and a practical value. They can be used by experts, expert witnesses, computer programmers, researchers and students.

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Section: Simplifications Of Collision Models In Sdc Dynamic Verificationmentioning

confidence: 99%

Collision Model Simplifications in the Dynamic Analysis With the SDC Method

Aleksandrowicz

2020

Transport Problems

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“…Mitigating injuries resulting from these accidents hinges on both legislative measures and public safety awareness. Additionally, advancements in active and passive safety technologies play a crucial role in this regard [1]. Unlike active safety technologies, passive safety technologies are adept at minimizing personal injuries during accidents [2].…”

Section: Introductionmentioning

confidence: 99%

Optimization Study of Driver Crash Injuries Considering the Body NVH Performance

Li,

Zhang,

Zhang

et al. 2023

Applied Sciences

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Optimal body structure design is a central focus in the field of passive automotive safety. A well-designed body structure enhances the lower threshold for crash safety, serving as a basis for the deployment of other safety systems. Frontal crashes, particularly those with an overlap rate below 25%, are the most frequent types of vehicular accidents and pose elevated risks to occupants due to variable energy absorption and force transmission mechanisms. This study aims to identify an optimized, cost-effective, and lightweight solution that minimizes occupant injuries. Using a micro-vehicle as a case study and accounting for noise, vibration, and harshness (NVH) performance, this paper employs Elman neural networks to predict key variables such as the first-order modes of the body, the body’s mass, and the head injury values for the driver. Guided by these predictions and constrained by the first-order modes and body mass, a genetic algorithm was applied to explore optimal solutions within the solution space defined by the body panel thickness. The optimized design yielded a reduction of approximately 173.43 in the driver’s head injury value while also enhancing the noise, vibration, and harshness performance of the vehicle body. This approach offers a methodological framework for future research into the multidisciplinary optimization of automotive body structures.

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“…An expert is required to change many parameters and needs to be familiar with the software and the models to be used. In works (Kostek et al, 2017;Kostek et al, 2019) the authors present both the results of computer simulations of a car crash with a rigid obstacle obtained with a simulation program as well as the experimental results. The results were obtained for the same initial conditions, which enabled assessment of the computer simulation reliability and identification of selected parameters.…”

Section: Introductionmentioning

confidence: 99%

Uncertainty in Vehicle Collision Modeling - Selected Problems

Aleksandrowicz¹,

Aleksandrowicz²

2020

Engineering Mechanics 2020

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Road accidents which cause personal and material losses are inseparably connected with development of motorization. Currently, experts who provide assessment of vehicle accidents use simulation programs. The results of the assessments have an impact on legal procedures in court cases. However, experts are often unaware of simplifications in modeling and the possibility of comparing simulation results with the use of different models. In this work, problems connected with generation of different results for the same event by a program are discussed. The results can be used by researchers, program designers and experts in practice.

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Study of vehicle crashes into a rigid barrier

Cited by 5 publications

References 10 publications

Collision Model Simplifications in the Dynamic Analysis With the SDC Method

Collision Model Simplifications in the Dynamic Analysis With the SDC Method

Optimization Study of Driver Crash Injuries Considering the Body NVH Performance

Uncertainty in Vehicle Collision Modeling - Selected Problems

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