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(xué)學(xué)報(bào)》2016年03期

【摘要】：應(yīng)用基于CT數(shù)據(jù)構(gòu)建的3歲兒童頭部有限元模型,參照成人尸體實(shí)驗(yàn)條件進(jìn)行頭部撞擊仿真實(shí)驗(yàn),并將頭部顱內(nèi)響應(yīng)結(jié)果同尸體實(shí)驗(yàn)以及6歲兒童頭部進(jìn)行了對(duì)比分析.結(jié)果表明:顱骨剛度的增加會(huì)引起撞擊側(cè)顱內(nèi)壓力減小、對(duì)撞側(cè)顱內(nèi)壓力增大、腦組織von Mises應(yīng)力減小以及腦組織最大剪應(yīng)力減小,說(shuō)明在同一沖擊載荷條件下,顱骨剛度的增加會(huì)使撞擊側(cè)的腦組織挫傷風(fēng)險(xiǎn)降低.根據(jù)研究結(jié)果,建議針對(duì)不同年齡段人群制定不同的腦損傷準(zhǔn)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(xué)機(jī)械工程學(xué)院;
【基金】：國(guó)家自然科學(xué)基金資助項(xiàng)目(81201015;81471274;81371360)
【分類(lèi)號(hào)】：R651.15
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本文編號(hào)：1813287