本文選題：兒童頭部有限元模型 + 頭部撞擊��； 參考：《天津科技大學學報》2016年03期

【摘要】：應用基于CT數(shù)據(jù)構建的3歲兒童頭部有限元模型,參照成人尸體實驗條件進行頭部撞擊仿真實驗,并將頭部顱內(nèi)響應結果同尸體實驗以及6歲兒童頭部進行了對比分析.結果表明:顱骨剛度的增加會引起撞擊側顱內(nèi)壓力減小、對撞側顱內(nèi)壓力增大、腦組織von Mises應力減小以及腦組織最大剪應力減小,說明在同一沖擊載荷條件下,顱骨剛度的增加會使撞擊側的腦組織挫傷風險降低.根據(jù)研究結果,建議針對不同年齡段人群制定不同的腦損傷準則.
[Abstract]:A finite element model of the head of a 3-year-old child was constructed based on CT data. According to the experimental conditions of adult cadaver, the head impact simulation experiment was carried out, and the results of head intracranial response were compared with that of the cadaveric experiment and the head of 6-year-old child. The results show that the increase of skull stiffness will result in the decrease of intracranial pressure, the increase of intracranial pressure, the decrease of von Mises stress in brain tissue and the decrease of maximum shear stress in brain tissue, which indicates that under the same impact load condition, the intracranial pressure of the impingement side increases, and the von Mises stress of the brain tissue decreases. Increased skull stiffness reduces the risk of brain contusion on the impact side. According to the results of the study, it is suggested that different brain injury criteria should be developed for different age groups.
【作者單位】： 天津科技大學機械工程學院;
【基金】：國家自然科學基金資助項目(81201015;81471274;81371360)
【分類號】：R651.15
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本文編號：1813287