...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Applied Mechanics and Engineering >BIOMECHANICAL ANALYSIS OF HUMAN PELVIS UNDER MUSCULO-SKELETAL LOAD USING 3D FINITE ELEMENT METHOD
【24h】

BIOMECHANICAL ANALYSIS OF HUMAN PELVIS UNDER MUSCULO-SKELETAL LOAD USING 3D FINITE ELEMENT METHOD

机译：利用3D有限元法分析人骨盆在骨骼肌载荷下的生物力学

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

During walking, the human pelvis is loaded by hip contact force and 22 muscle forces. Due to its complex geometry and structure, biomechanics of the human pelvis is complicated. A three-dimensional finite element model of the full pelvis was developed and the stress and deformation pattern was mapped, considering musculoskeletal loading, during 8 phases of a normal walking cycle. The cortical and trabecular bones were modeled with shell-solid elements. The full model consisted of 71 674 tetrahedral and 17 264 shell elements (four-noded), through 16 429 nodes. An algorithm was also developed to calculate the components and direction of 22 muscle forces, considering the origin, insertion points and change of femur position, relative to the pelvis during walking. Stress contour maps revealed that the zones and magnitudes of maximum von-Mises stresses (28 to 38 MPa for the cortical bone and 1.3 to 1.7 MPa for the trabecular bone) varied from phase to phase during walking. Also the average phase wise variations for the resultant displacement were 0.1 to 0.5 mm. These results may be used approximately for a clinical comparison between the normal pelvis and the effectiveness of different pelvic fracture fixation modalities.
机译：在行走过程中，髋骨接触力和22种肌肉力会加载人的骨盆。由于其复杂的几何形状和结构，人骨盆的生物力学非常复杂。建立了完整骨盆的三维有限元模型，并在正常步行周期的8个阶段中考虑了肌肉骨骼负荷，绘制了应力和变形模式。皮质和小梁骨骼是用壳固体元素建模的。完整的模型由71 674个四面体和17 264个壳单元（四节点）到16 429个节点组成。还开发了一种算法来计算22种肌肉力的分量和方向，并考虑了行走过程中相对于骨盆的起点，插入点和股骨位置的变化。应力等高线图显示，行走过程中最大von-Mises应力的区域和大小（皮质骨为28至38 MPa，小梁骨为1.3至1.7 MPa）随相位而变化。同样，所产生位移的平均相位变化为0.1至0.5mm。这些结果可近似用于正常骨盆和不同骨盆骨折固定方式的有效性之间的临床比较。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号