Johan Davidsson
Johan Davidsson research aims at preventing harm to the human body when exposed to high mechanical loads of the type often found in traffic accidents. The research stretches from damage and failure mechanisms at the micro level in the tissue to the study of whole-body mechanical response to violent external loads. The main focus is on brain injuries, milder forms of neck injury, often referred to as whiplash associated disorders, and chest injuries. Most of the research aims to increase understanding of how these parts of the human body reacts to forces; its biomechanical response. The work is mostly of an experimental nature. The goal of the research is to provide injury criteria and risk functions that can be used together with dummies. Some research is conducted where injury criteria and risk functions are developed for mathematical models of the human; both for models of in vehicle occupants and pedestrians. Research ultimate goal is to create principles for new or improved injury protection systems, for example in vehicles. Examples of such are airbags, whiplash protection, or child seats. It also includes personal protection such as helmets or protection of various body parts of a bicyclist. The studies are primarily conducted for injury reduction in eth road traffic environment; the vehicle industry and authorities are the two main end users. Studies are also conducted in other fields such as for sports, medical and military settings. Examples of research are diagnosis and treatment of brain injuries, mild form of brain injury in sports, brain injuries resulting from blast related violence and as a result of shrapnel penetration into the skull cavity. Another area of research is integrated safety. Here the focus is on the development of mathematical models of humans that can simulate the events just before a collision. A future challenge is to simulate the entire event including pre-crash and in-crash. An adjacent research topic is the development of test methods for integrated safety. The research is carried out at SAFER – Vehicle and Traffic Safety Centre at Chalmers, Gothenburg, Sweden with its partners. Research on brain injuries, injury mechanisms and tolerances are carried out in in close collaboration with the Karolinska Institute and the Japan Automotive Research Institute (JARI). Johan Davidsson teaches the course Impact Biomechanics, study period IV and the PhD-course Anatomy and Physiology.
Showing 175 publications
Overall SAFE-UP impact (Deliverable 5.6)
Passive safety system assessment results (Deliverable 5.4)
Population Variance in Pelvic Response to Lateral Impacts - A Global Sensitivity Analysis
Hippocampal Expression of Cytochrome P450 1B1 in Penetrating Traumatic Brain Injury
The Influence of Occupant's Size, Shape and Seat Adjustment in Frontal and Side Impacts
Dynamic Spatial Tuning Patterns of Shoulder Muscles with Volunteers in a Driving Posture
Dynamic Responses of Female Volunteers in Rear Impact Sled Tests at Two Head Restraint Distances
Predicting pelvis geometry using a morphometric model with overall anthropometric variables
A method for predicting crash configurations using counterfactual simulations and real-world data
Female kinematics and muscle responses in lane change and lane change with braking maneuvers
The influence of car passengers’ sitting postures in intersection crashes
Analys av kollisioner vid hockeyspel med hjärnskakning som utfall
A Model for Research on Penetrating Traumatic Brain Injuries
A Sagittal Plane Rotational Injury Rodent Model for Research on Traumatic Brain Injuries
The hidden figures of major road trauma crashes
Analysis of Traumatic Brain Injuries Sustained by Occupants in Japanese Brand Car Crashes in the US
Trunk muscle recruitment patterns in simulated precrash events
Dogs in passenger vehicles – crash safety evaluation of travel crates
Gender differences in Occupant Posture during Driving and Riding
Traumatic Brain Injuries in Motor Vehicles Crashes
Analysis of occupant kinematics and dynamics in nearside oblique impacts
Towards omni-directional active human body models
Impacts to the chest of PMHSs – Influence of impact location and loaddistribution on chest response
Neck muscle activation patterns in dynamic conditions
Development of a comprehensive injury criterion for moderate and mild traumatic brain injuries
Experimental Models for Neurotrauma Research
Time-Dependent Changes in Serum Level of Protein Biomarkers after Focal Traumatic Brain Injury
Muscle Activation Strategies in Human Body Models for the Development of Integrated Safety
Mice and (wo)men with head trauma
Gender Differences in Occupant Posture and Muscle Activity with Motorized Seat Belts
Experiments and Mathematical Modeling for Evaluation of Non-Lethal Weapons
Characterisation of the pressure distribution in penetrating traumatic brain injuries
Effect of age on amount and distribution of diffuse axonal injury after rotational trauma
Effect of age on amount and distribution of diffuse axonal injury after rotational trauma
Development of injury risk functions for use with the THORAX Demonstrator; an updated THOR
A novel mouse model of penetrating brain injury.
Finite Element Musculoskeletal Model with Feedback Control to Simulate Spinal Postural Responses
Human body modeling for integrated safety analyses using THUMS
Effect of age on amount and distribution of diffuse axonal injury after rotational trauma
Human Body Modeling for Integrated Safety Analyses, Adult and Child Models
Set of injury risk curves for different sizes and ages
Evaluation of Seat Performance Criteria for Rear‐End Impact Testing BioRID II and Insurance Data
An Advanced Thorax-Shoulder Design for the THOR Dummy
Biofidelity requirements for the THORAX project
Development of an Advanced Thorax / Shoulder Complex for the THOR Dummy
Evaluation of Seat Performance Criteria for Future Rear-end Impact Testing
Design implications for improving an anthropomorphic test device based on human body simulations
Experimental Animal Models for Studies on the Mechanisms of Blast-induced Neurotrauma
Investigation of blast-induced neurotrauma in a rodent model
Pedestrian shoulder and spine kinematics in full-scale PMHS tests for human body model evaluation
Characterization of a Novel Rat Model of Penetrating Traumatic Brain Injury
Development of an advanced frontal dummy thorax demonstrator
Causation mechanisms in car-to-vulnerable road user crashes: Implications for active safety systems
Mechanisms of Blast Induced Brain Injuries, Experimental Studies in Rats.
EVALUATING THE THORACIC RESPONSE IN A HUMAN BODY MODEL, COMPARED TO CADAVER EXPERIMENTS
Traumatic brain injuries investigation using finite element modeling of rat brain
Evaluation of Seat Performance Criteria for Rear-End Impact Testing
A new model to produce sagittal plane rotational induced diffuse axonal injuries
Three Experimental Models for Evaluation of Three Different Mechanisms in Blast TBI
A finite element model of the rat brain for injury investigation
Review of the EURO NCAP Upper Leg Test
Requirements of a system to reduce car-to-vulnerable road user crashes in urban intersections
Volunteer Testing for Shoulder Design
EvaRID: a dummy model representing females in rear end impacts
Studies on thresholds for blunt trauma: Relevance for NLW
Traumatic Brain Injury Induces Changes in the Gene Expression of Cytochrome P450 subfamily
Increased Expression of C5AR in Diffuse Axonal Injury and Penetration Brain Injury
Complement Factors and Chemokines in DAI and Peripheral Nerve Injury Studied by Gene Microarray
Trauma attenuating backing improves protection against behind armor blunt trauma
Mechanisms of blast induced brain injuries, experimental studies in rats
Injury threshold for sagittal plane rotational induced diffuse axonal injuries
Characterization of a Novel Model for Penetration Brain Injury
Experimental Studies on Mechanisms of Blast Induced Brain Injuries
Finite element analysis of traumatic brain injuries mechanisms in the rat
EVALUATION OF DUMMY SHOULDER KINEMATICS IN OBLIQUE FRONTAL COLLISIONS
Role of inflammation in penetration and rotational brain injury
Mechanisms of blast induced brain injuries
Dummy Requirements and Injury Criteria for a Low-Speed Rear Impact Whiplash Dummy
Sagittal anterior-posterior rotational acceleration induced head injuries in the rat
Diffuse axonal injury induced by rapid rotation
A New THOR Shoulder Design: A Comparison with Volunteers, the Hybrid III and THOR NT
A new model for diffuse axonal injury induced by rapid rotation
New and Old Types of Military Neurotrauma
Leakage of S-100 protein after high velocity penetration injury to the brain
New model for high velocity penetration injury to the brain
Design and Validation of the Neck for a Rear Impact Dummy (BioRID I)
Human volunteer Kinematics in Rear-End Sled Collisions
A Comparison of Volunteer, BioRID P3 and Hybrid III performance in Rear Impacts
development of the BioRID - A New Biofidelic Rear Impact Dummy. Internal report
A Comparison between Volunteer, BioRID P3 and Hybrid III performance in Rear Impacts
Nervenzellschäden bei Schleudertraumen. Tierexperimentelle Untersuchungen
BioRID - A New Biofidelic Rear Impact Dummy
The New Neck Design for the Rear-End Impact Dummy, BioRID I
Human Volunteer Kinematics in Rear-End Sled Collisions
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Showing 18 research projects
Enhancing Female and Male SAFER HBM Torso Injury Prediction
Advancing Neck Injury Prediction in Car Crashes using the SAFER HBM
Avancerat verktyg för utveckling och utvärdering av skydd mot skulderskador för cyklister
Active human body model for virtual occupant response, step 5
Proactive SAFEty systems and tools for a constantly UPgrading road environment (SAFE-UP)
Future Occupant Safety for Crashes in Cars (OSCCAR)
Active human body models for virtual occupant response (A-HBM), step 4
Kartläggning av hjärnskakningar inom svensk ishockey, videoanalys, blodprovsdata och konsekvenser
Active human body models for virtual occupant response, step 3
Front- och sneda kollisioner: Utvärdering av skaderisk och skyddssystem för uppgraderade THOR dockan
Improved injury prediction using HBM, step 2
Metod för integrerad säkerhetsbedömning av bilars skydd fotgängare
Aktiv human modell för prediktering av mänsklig rörelse, steg 2
Vehicle front model development for validation of pedestrian Human Body Model