Development And Validation Of A Finite Element Model Of The Head And Neck Of Q6Child Dummy

At present car crash dummy is needed to establish a simulation model to apply for vehicle crash simulation, from which crash dummy collision damage parameters can be obtained directly, so as the child dummy. At present Q6child dummy-more advanced in biomechanic, its finite element model has not been released. The research of finite element model of Q6child dummy is very few.Based on the study of literature and research existing dummies’finite element models, combine with Q6child dummy head and neck calibration tests, a finite element model of Q6child dummy head and neck were developed. Methods of CAE and validation tests were used to complete Q6child dummy head and neck finite element modeling and validation.In this paper firstly different child dummy series and the research significance of the finite element model were introduced. Then CT scanning and3d laser scanning are applied to Q6child dummy, it can obtain the internal and external surface point cloud data, and then with the reverse engineering method the3d geometric model of dummy is obtained. Later mesh all the components and parts of child dummy reasonably. Because the huge workload of development of3d geometry model and finite element model of Q6child dummy, at present our group has developed a complete3d geometric model for Q6child dummy, and has completed the development of the finte element model of the head and neck.In order to verify the validation of the finite element model of head for Q6child dummy, our group carried out the calibration test for head according to the Q6child dummy manual to get the calibration test curve. Meanwhile the calibration test simulation model of head was established. Through the analysis and multi-objective optimization of the head finte element model material parameters, to achieve the simulation curve and test curve. The validation of head and neck finite element model are validated. As to the neck finite element model, our group used the known calibration test curves. Meanwhile the calibration test simulation model of neck was established. Through the analysis and multi-objective optimization of the neck finte element model material parameters, to achieve the simulation curve and test curve as well. The validation of head and neck finite element model are validated. The finite element model of Q6child dummy head and neck established by our group meet the calibration requirements of Q6child dummy’s head and neck, which can be widely used in car crash simulation. The method of model development and validation can be used as a reference, applied to the subsequent research and development of dummy finite element model.