Numerical Analyses of Fracture Mechanism of the Pelvic Ring during Side-Impact Load
The aim of this study is the analysis of the multiple pelvis fracture mechanism in side-impact dynamic load cases. The elaborated numerical model of a pelvis complex includes pelvic and sacral bones as well as soft tissues such as ligaments and cartilages. The bone has been modelled as a viscoelasti...
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MDPI AG
2022-08-01
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| Online Access: | https://www.mdpi.com/1996-1944/15/16/5734 |
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| author | Tomasz Klekiel Katarzyna Arkusz Grzegorz Sławiński Piotr Malesa Romuald Będziński |
| author_facet | Tomasz Klekiel Katarzyna Arkusz Grzegorz Sławiński Piotr Malesa Romuald Będziński |
| author_sort | Tomasz Klekiel |
| collection | DOAJ |
| description | The aim of this study is the analysis of the multiple pelvis fracture mechanism in side-impact dynamic load cases. The elaborated numerical model of a pelvis complex includes pelvic and sacral bones as well as soft tissues such as ligaments and cartilages. The bone has been modelled as a viscoelasticity material based on the Johnson–Cook model. The model parameters have been chosen based on the experimental data. The uniqueness of a presented approach refers to the selection of crack criteria for the bone. Thus, it was allowed to analyse the process of multiple fractures inside the pelvic bones. The analysis was evaluated for the model in which the deformation rate influences the bone material properties. As a result, the stress distributions inside particular bones were changed. It has been estimated that the results can vary by 50% or even more depending on the type of boundary conditions adopted. The second step of work was a numerical analysis of military vehicle subjected to an IED. An analysis of the impactor’s impact on the pelvis of the Hybrid ES-2RE mannequin was conducted. It was shown that the force in the pelvis exceeds the critical value by a factor of 10. The results of the numerical analysis were then used to validate the model of a military vehicle with a soldier. It was shown that for the adopted loading conditions, the critical value of the force in the pelvis was not exceeded. |
| first_indexed | 2024-03-09T09:52:56Z |
| format | Article |
| id | doaj.art-7afac149bdb54310857d0e544031af63 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-09T09:52:56Z |
| publishDate | 2022-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-7afac149bdb54310857d0e544031af632023-12-01T23:56:51ZengMDPI AGMaterials1996-19442022-08-011516573410.3390/ma15165734Numerical Analyses of Fracture Mechanism of the Pelvic Ring during Side-Impact LoadTomasz Klekiel0Katarzyna Arkusz1Grzegorz Sławiński2Piotr Malesa3Romuald Będziński4Faculty of Mechanical Engineering, University of Zielona Góra, Prof. Z. Szafrana 4 Street, 65-516 Zielona Góra, PolandFaculty of Mechanical Engineering, University of Zielona Góra, Prof. Z. Szafrana 4 Street, 65-516 Zielona Góra, PolandFaculty of Mechanical Engineering, Military University of Technology, Gen. Sylwestra Kaliskiego Street 2, 00-908 Warsaw, PolandFaculty of Mechanical Engineering, Military University of Technology, Gen. Sylwestra Kaliskiego Street 2, 00-908 Warsaw, PolandFaculty of Mechanical Engineering, University of Zielona Góra, Prof. Z. Szafrana 4 Street, 65-516 Zielona Góra, PolandThe aim of this study is the analysis of the multiple pelvis fracture mechanism in side-impact dynamic load cases. The elaborated numerical model of a pelvis complex includes pelvic and sacral bones as well as soft tissues such as ligaments and cartilages. The bone has been modelled as a viscoelasticity material based on the Johnson–Cook model. The model parameters have been chosen based on the experimental data. The uniqueness of a presented approach refers to the selection of crack criteria for the bone. Thus, it was allowed to analyse the process of multiple fractures inside the pelvic bones. The analysis was evaluated for the model in which the deformation rate influences the bone material properties. As a result, the stress distributions inside particular bones were changed. It has been estimated that the results can vary by 50% or even more depending on the type of boundary conditions adopted. The second step of work was a numerical analysis of military vehicle subjected to an IED. An analysis of the impactor’s impact on the pelvis of the Hybrid ES-2RE mannequin was conducted. It was shown that the force in the pelvis exceeds the critical value by a factor of 10. The results of the numerical analysis were then used to validate the model of a military vehicle with a soldier. It was shown that for the adopted loading conditions, the critical value of the force in the pelvis was not exceeded.https://www.mdpi.com/1996-1944/15/16/5734pelvicbone structurefracture bone mechanismJohnson–Cook material modelLS-DYNAimpact load |
| spellingShingle | Tomasz Klekiel Katarzyna Arkusz Grzegorz Sławiński Piotr Malesa Romuald Będziński Numerical Analyses of Fracture Mechanism of the Pelvic Ring during Side-Impact Load Materials pelvic bone structure fracture bone mechanism Johnson–Cook material model LS-DYNA impact load |
| title | Numerical Analyses of Fracture Mechanism of the Pelvic Ring during Side-Impact Load |
| title_full | Numerical Analyses of Fracture Mechanism of the Pelvic Ring during Side-Impact Load |
| title_fullStr | Numerical Analyses of Fracture Mechanism of the Pelvic Ring during Side-Impact Load |
| title_full_unstemmed | Numerical Analyses of Fracture Mechanism of the Pelvic Ring during Side-Impact Load |
| title_short | Numerical Analyses of Fracture Mechanism of the Pelvic Ring during Side-Impact Load |
| title_sort | numerical analyses of fracture mechanism of the pelvic ring during side impact load |
| topic | pelvic bone structure fracture bone mechanism Johnson–Cook material model LS-DYNA impact load |
| url | https://www.mdpi.com/1996-1944/15/16/5734 |
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