Experimental and analytic determining of the characteristics of deformation and side stiffness of a motor car body based on results of side-impact crash tests

Prochowski, Leon; Ziubiński, Mateusz; Pusty, Tomasz

doi:10.1088/1757-899x/421/3/032025

Cited by 8 publications

(7 citation statements)

References 4 publications

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“…The deformation characteristics of a vehicle under frontto-side impact were calculated by Prochowski et al [51] using experimental and analytical equations. The combined deformation of both vehicle bodies due to the force was plotted for the impact duration.…”

Section: Discrete Time Domain Simulationsmentioning

confidence: 99%

Mathematical models for assessment of vehicle crashworthiness: a review

Noorsumar

Rogovchenko

Robbersmyr

et al. 2021

International Journal of Crashworthiness

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This article reviews approaches to mathematical modeling of a vehicle crash. The growing focus on vehicle and occupant safety in car crashes has triggered the need to study vehicle crashworthiness in the initial stages of vehicle development. The major motivation for this work is to support vehicle crashworthiness design during the product development process.The article is divided into two parts; the first one overviews existing mathematical models used to solve engineering problems. The second part describes modeling strategies applied for replicating non-linear vehicle crash event and occupant kinematics in an occupant protection loadcase. We also highlight alternative modeling strategies using hybrid modeling techniques aimed at the improvement of the vehicle development process.

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Section: Discrete Time Domain Simulationsmentioning

confidence: 99%

Mathematical models for assessment of vehicle crashworthiness: a review

Noorsumar

Rogovchenko

Robbersmyr

et al. 2021

International Journal of Crashworthiness

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“…Program V-SIM models a collision by using a car body block with the same stiffness, in the stages of compression and restitution, and the operator can change it. In the V-SIM program, the characteristics of contact force in the vehicle deformation function are close to linear, which is a simplification; this issue is discussed in [24]. Body zones of vehicles, due to their structure, are characterized by different stiffness.…”

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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“…The authors noted the reduction in the strength of the repaired body and the change in stiffness to the vehicle that did not crash. Prochowski et al [32] investigated side-impact vehicle crash in terms of accident reconstructions. Based on experimental results, deformation and stiffness parameters were estimated.…”

Section: Introductionmentioning

confidence: 99%

Analytical Approach for Vehicle Body Structures Behaviour Under Crash at Aspects of Overloading and Crumple Zone Length

Kurpisz

Obst

Szymczak

et al. 2023

Acta Mechanica Et Automatica

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Road safety problem is still topical, especially since the number of vehicles and the volume of traffic are increasing. It is possible to increase the safety of road users through systemic changes in many areas related to transport. The deformation of the vehicle body during an accident has an impact on the loads acting on the passengers. Vehicle body deformation depends on complex parameters, and knowledge of these parameters is essential for designing crumple zones and the accident reconstruction process. Knowledge of the mechanical parameters of the vehicle structure during deformation is also a reference to passenger injury indicators assessment. This paper reports results from the analytical approach for determining the protection level of personal vehicles. The proposed conception is based on the results from the static stiffness characteristic of the Ford Taurus, which gives the possibility of phenomenological and simple body crumple analytical description at a speed equal to 10 km/h, 40 km/h, 56 km/h and 60 km/h, which is an original part of the work. The approach enables us to describe the vehicle crash by focusing on variations of deformation in time, stiffness, vehicle collision time (duration), deceleration and dynamic crash force. Basing on the body stiffness data of the personal vehicle, the length of the deformation zone in the front of the car and the maximum values of force at the crash for a speed of 60 km/h are presented. Results obtained by the authors show that is possible to estimate the overloading level during the crash time of a vehicle based on the stiffness characteristic of the car body. The proposed methodology can be developed and the advantage of the presented procedure is an uncomplicated useful tool for solving complex problems of a vehicle crash.

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Experimental and analytic determining of the characteristics of deformation and side stiffness of a motor car body based on results of side-impact crash tests

Cited by 8 publications

References 4 publications

Mathematical models for assessment of vehicle crashworthiness: a review

Mathematical models for assessment of vehicle crashworthiness: a review

Collision Model Simplifications in the Dynamic Analysis With the SDC Method

Analytical Approach for Vehicle Body Structures Behaviour Under Crash at Aspects of Overloading and Crumple Zone Length

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