The Numerical Simulation of the Dynamic Stress Field from Impacting Head
10.3321/j.issn:1001-5515.2001.01.005
- VernacularTitle:颅脑撞击伤时脑组织内动态应力场的数值模拟
- Author:
Bo AN
1
;
Bingcang LI
;
Dajun XIE
;
Qin CHEN
;
Zhiqiang CHENG
Author Information
1. 第三军医大学
- From:
Journal of Biomedical Engineering
2001;18(1):16-18
- CountryChina
- Language:Chinese
-
Abstract:
In order to study the mechanism of impact injur y to the head, we have simulated the development of the stress field by using th e numerical simulation method. The process of the head having been impacted vert ically by an impactor can be described as a 2D problem, and the reactions of the head subjected to impacted force can be simulated and analyzed by the method ba sed on the finite difference method (FDM). The model is subjected to applied for ce by an impactor with the initial velocity of 25m/s (90km/h). The pre-processi ng for the model is done on the microcomputer software. Once imported to the sof tware, the nodes and elements are generated and material characteristics are ass igned. The results demonstrate that the high resolution computer graphics can pr ovide the dynamic distribution of the stress field, which can clearly show how t he stress is developed, and how many its value is. The results are helpful to un derstanding the mechanism of impact injury to head.
