第18讲-生物力学和骨科Lecture 18 - Biomechanics and Orthopedics |
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课程网址: | http://videolectures.net/yalebeng100s08_saltzman_lec18/ |
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: | Saltzman教授介绍了材料的弹性和粘度特性。他描述了两个单独的实验装置来测量材料的弹性和粘度。材料弹性可以根据应力-应变特性定义,并定义杨氏模量(E),即应力-应变曲线的斜率。另一方面,流体粘度由剪切应力描述。在对任何材料建模时,弹簧可用于表示理想的弹性材料,缓冲器可用于表示理想的粘弹性材料。所有生物材料都包含这些特性的某些组合,可以用弹簧和缓冲器组成的物理模型来描述。 |
课程简介: | Professor Saltzman introduces the material properties of elasticity and viscosity. He describes two separate experimental setups to measure the elasticity and the viscosity of a material. Material elasticity can be defined in terms of stress-strain property, and defines the Young's modulus (E), which is the slope of the stress-strain curve. Fluid viscosity, on the other hand, is described by shear stress. When modeling any material, the spring can be used to represent an ideal elastic material and the dashpot an ideal viscoelastic material. All biomaterials contain some combination of these properties and can be described by physical models that consist of both spring and dashpot. |
关 键 词: | 材料的弹性; 粘度特性; 生物材料 |
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: | 57 |