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. 2022 Dec 12;22(24):9720.
doi: 10.3390/s22249720.

Comparison of Volunteers' Head Displacement with Computer Simulation-Crash Test with Low Speed of 20 km/h

Damian Frej  1 , Marek Jaśkiewicz  1
Affiliations

Comparison of Volunteers' Head Displacement with Computer Simulation-Crash Test with Low Speed of 20 km/h

Damian Frej et al. Sensors (Basel). .

Abstract

Recently, the automotive industry has used simulation programs much more often than experimental research. Computer simulations are more and more often used due to the repeatability of simulation conditions and the possibility of making modifications in simulation objects. Experimental and simulation studies carried out are aimed at developing a model of a simulation dummy adapted to both frontal and rear crash tests, taking into account changes in the moment of resistance in individual joints. The main purpose of the article is to reproduce a real crash test at a low speed of 20 km/h in a simulation program. For this purpose, a series of experimental crash tests with the participation of volunteers was carried out, and then a crash test with a dummy was simulated in the MSC ADAMS program. The experimental studies involved 100 volunteers who were divided into three percentile groups (C5, C50, C95). With the help of force sensors and a high-speed camera, crash tests of volunteers were recorded. The collected data from the force sensors made it possible to map the force in the seat belts. For low-speed crash tests, the displacement and acceleration of individual body parts of the dummy and volunteers can be measured using vision systems. The article identified head displacements of volunteers in the TEMA program based on a video analysis of a crash test film with a frequency of up to 2500 frames per second. The displacement of the simulation dummy's head in the MSC ADAMS program in the considered crash time interval from 0.0 to 0.4 s for all three percentile groups coincided with the head displacement of the volunteers during the experimental crash test.

Keywords: computer simulation; crash test; dummy.

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Conflict of interest statement

The authors declare no conflict of interest.

Figures

Figure 4
Figure 4
Anthropometric crash test dummy made in the ADAMS program.
Figure 1
Figure 1
Test bench for low-speed crash tests.
Figure 2
Figure 2
Force sensors in seat belts EMS 150.
Figure 3
Figure 3
Diagram of the measuring station.
Figure 5
Figure 5
Motion function panel for simulation dummy.
Figure 6
Figure 6
The course of acceleration of the stroller together with the vehicle seat during experimental studies.
Figure 7
Figure 7
The course of the speed of the trolley during experimental studies.
Figure 8
Figure 8
Comparison of the force characteristics in the seat belts during the volunteer crash test and the simulation dummy.
Figure 9
Figure 9
Frames at different times of the low-speed crash test with the participation of a volunteer representing the 50th percentile of the male population and the course of the simulation dummy crash test superimposed in the MSC ADAMS program.
Figure 10
Figure 10
Volunteer head displacement, (a) C5, (b) C50, (c) C95.
Figure 10
Figure 10
Volunteer head displacement, (a) C5, (b) C50, (c) C95.
Figure 11
Figure 11
Comparison of head movement trajectories of a simulation dummy and volunteers representing the 5th percentile of the male population.
Figure 12
Figure 12
Comparison of head movement trajectories of a simulation dummy and volunteers representing the 50th percentile of the male population.
Figure 13
Figure 13
Comparison of head movement trajectories of a simulation dummy and volunteers representing the 95th percentile of the male population.
See this image and copyright information in PMC

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