Impact Loading on a Patient-Specific Head Model: The Significance of Brain Constitutive Models and Loading Location
Head impacts are common incidents that may cause traumatic brain injury (TBI), which imposes significant economic and social burdens. This study developed a patient-specific head model to address the significance of the brain’s constitutive model and loading location on head impact. Two hyperelastic...
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MDPI AG
2025-02-01
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| Series: | Mathematical and Computational Applications |
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| Online Access: | https://www.mdpi.com/2297-8747/30/2/21 |
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| author | Amirhossein Gandomirouzbahani Hadi Taghizadeh Iman Z. Oskui Fábio A. O. Fernandes |
| author_facet | Amirhossein Gandomirouzbahani Hadi Taghizadeh Iman Z. Oskui Fábio A. O. Fernandes |
| author_sort | Amirhossein Gandomirouzbahani |
| collection | DOAJ |
| description | Head impacts are common incidents that may cause traumatic brain injury (TBI), which imposes significant economic and social burdens. This study developed a patient-specific head model to address the significance of the brain’s constitutive model and loading location on head impact. Two hyperelastic (Model I and Model II) constitutive models and one hyper-viscoelastic (Model III) constitutive model for the brain tissue were developed. In Models II and III, white and gray matter heterogeneities were included. Respective volumetric and deviatoric responses were compared for a frontal head impact. Then, the load was applied to the head’s frontal, lateral, and posterior regions to report location-wise outcomes. The findings indicated that Model I, which was based on almost quasi-static experiments, underestimated the deviatoric responses. Although the pressure contours were similar for Models II and III, the latter included viscous effects and provided more accurate deviatoric responses. Lateral loading indicated a significantly higher risk of TBI. Interestingly, the deviatoric responses and strain energy density of the brain did not decay with relaxation of the impact load. Hence, the incidence of TBI should be explored after load relaxation. |
| format | Article |
| id | doaj-art-6c8f6d6efb4c494392839a8afd3fb924 |
| institution | OA Journals |
| issn | 1300-686X 2297-8747 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | MDPI AG |
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| series | Mathematical and Computational Applications |
| spelling | doaj-art-6c8f6d6efb4c494392839a8afd3fb9242025-08-20T02:28:24ZengMDPI AGMathematical and Computational Applications1300-686X2297-87472025-02-013022110.3390/mca30020021Impact Loading on a Patient-Specific Head Model: The Significance of Brain Constitutive Models and Loading LocationAmirhossein Gandomirouzbahani0Hadi Taghizadeh1Iman Z. Oskui2Fábio A. O. Fernandes3TEMA—Centre for Mechanical Technology and Automation, Department of Mechanical Engineering, University of Aveiro, Campus de Santiago, 3810-193 Aveiro, PortugalTissue Mechanics Laboratory, Faculty of Biomedical Engineering, Sahand University of Technology, Tabriz 51335/1996, IranBiomechanical Engineering Group, Faculty of Biomedical Engineering, Sahand University of Technology, Tabriz 51335/1996, IranTEMA—Centre for Mechanical Technology and Automation, Department of Mechanical Engineering, University of Aveiro, Campus de Santiago, 3810-193 Aveiro, PortugalHead impacts are common incidents that may cause traumatic brain injury (TBI), which imposes significant economic and social burdens. This study developed a patient-specific head model to address the significance of the brain’s constitutive model and loading location on head impact. Two hyperelastic (Model I and Model II) constitutive models and one hyper-viscoelastic (Model III) constitutive model for the brain tissue were developed. In Models II and III, white and gray matter heterogeneities were included. Respective volumetric and deviatoric responses were compared for a frontal head impact. Then, the load was applied to the head’s frontal, lateral, and posterior regions to report location-wise outcomes. The findings indicated that Model I, which was based on almost quasi-static experiments, underestimated the deviatoric responses. Although the pressure contours were similar for Models II and III, the latter included viscous effects and provided more accurate deviatoric responses. Lateral loading indicated a significantly higher risk of TBI. Interestingly, the deviatoric responses and strain energy density of the brain did not decay with relaxation of the impact load. Hence, the incidence of TBI should be explored after load relaxation.https://www.mdpi.com/2297-8747/30/2/21traumatic brain injuryhyper-viscoelastic constitutive modelingdeviatoric and volumetric responsestress analysisfinite element analysis |
| spellingShingle | Amirhossein Gandomirouzbahani Hadi Taghizadeh Iman Z. Oskui Fábio A. O. Fernandes Impact Loading on a Patient-Specific Head Model: The Significance of Brain Constitutive Models and Loading Location Mathematical and Computational Applications traumatic brain injury hyper-viscoelastic constitutive modeling deviatoric and volumetric response stress analysis finite element analysis |
| title | Impact Loading on a Patient-Specific Head Model: The Significance of Brain Constitutive Models and Loading Location |
| title_full | Impact Loading on a Patient-Specific Head Model: The Significance of Brain Constitutive Models and Loading Location |
| title_fullStr | Impact Loading on a Patient-Specific Head Model: The Significance of Brain Constitutive Models and Loading Location |
| title_full_unstemmed | Impact Loading on a Patient-Specific Head Model: The Significance of Brain Constitutive Models and Loading Location |
| title_short | Impact Loading on a Patient-Specific Head Model: The Significance of Brain Constitutive Models and Loading Location |
| title_sort | impact loading on a patient specific head model the significance of brain constitutive models and loading location |
| topic | traumatic brain injury hyper-viscoelastic constitutive modeling deviatoric and volumetric response stress analysis finite element analysis |
| url | https://www.mdpi.com/2297-8747/30/2/21 |
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