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第19讲-生物力学与骨科(续)

Lecture 19 - Biomechanics and Orthopedics (cont.)
课程网址: http://videolectures.net/yalebeng100s08_saltzman_lec19/  
主讲教师: W. Mark Saltzman
开课单位: 耶鲁大学
开课时间: 2011-01-04
课程语种: 英语
中文简介:
索尔兹曼教授在讲座开始时讨论了运动对于任何生物的生存和繁殖的重要性。他介绍了不同的运动模式,首先以飞行为例来讨论力平衡,例如必须产生的推进力的大小,以克服阻力来产生向前运动。接下来,将讨论步行、跑步、骑自行车和游泳的力学原理,重点讨论能量的有效利用、克服阻力和摩擦力以及生物体形状和大小的影响。介绍了一个计算半径为r的球形物体在粘度为μ的介质中以速度v运动时的阻力的方程:Fd=6πvμr。最后,索尔兹曼教授谈到了人工髋关节的设计,生物医学工程师必须考虑骨盆的生物力学和自然功能。
课程简介: Professor Saltzman begins the lecture with discussion of the importance of motion for the survival and propagation of any living species. He presents the different modes of motion, taking first the example flight to talk about force balance, such as the magnitude of propulsive force that must be generated overcome drag to produce forward motion. Next, the mechanics of walking, running, cycling and swimming is discussed, with emphasis on efficient use of energy, overcoming drag and friction, and the influence of organism shape and size. An equation to calculate drag force of a spherical object of radius, r, moving at velocity, v, in a medium with viscosity, μ, is introduced: Fd = 6πvμr. Finally, Professor Saltzman talks about design of the artificial hip, which biomedical engineers must take into consideration the biomechanics and natural function of the pelvic bone.  
关 键 词: 运动; 人工髋关节的设; 骨盆的生物力学和自然功能
课程来源: 视频讲座网
数据采集: 2021-12-01:zkj
最后编审: 2021-12-01:zkj
阅读次数: 47