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Ge H.,Tsinghua University | Li Z.,Tsinghua University | Liu W.,Zhejiang Key Laboratory of Automotive Safety Technology | Zhang J.,Tsinghua University
Qiche Gongcheng/Automotive Engineering | Year: 2015

A technique is proposed to semi-automatically acquire the marking points of skull contour from medical CT images, and with which marking points are quickly and accurately extracted from 54 sets of CT scanned data of children heads. Then by using principal component analysis and regression analysis, a regression relation-ship model between the skull contour point set and the macro-parameters of a child (e. g. age and head circumference) is established, and based on which the statistical results of 6-, 18-, and 36-month-old children head skull contours are obtained. It is shown that the model established can better predict the skull contours of children with given macro-parameters. ©, 2015, SAE-China. All right reserved. Source

Tang H.,Zhejiang Geely Automobile Research Institute Co. | Tang H.,Zhejiang Key Laboratory of Automotive Safety Technology | Men Y.,Zhejiang Geely Automobile Research Institute Co. | Men Y.,Zhejiang Key Laboratory of Automotive Safety Technology | And 5 more authors.
Qiche Gongcheng/Automotive Engineering | Year: 2014

Taking the opportunity of the development of a new vehicle, the idea of “analysis driven design” is applied to car body development in concept design phase. The full parametric models for BIW and closure panels are constructed based on parameterization technology. The NVH performance of vehicle is evaluated by simulation on modal frequency and stiffness, and the sensibilities of modal frequency and stiffness to panel thickness are analyzed. Meanwhile, by coupled with FE models for the front/rear suspensions and powertrain of the same class vehicles, the crash simulation of complete vehicle is performed to evaluate its crashworthiness, rapidly acquiring the overall performance of vehicle in early stage, and shortening the development cycle of car body structures, which meet the requirements of structural stiffness, NVH performance and lightweighting. Source

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