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摘要:
Most soft materials behave as if they were hardened when subjected to an impact force. The strain rate dependence of viscosity resistance is the reason for this behavior. The authors carried out drop impact tests on several types of soft materials under the condition of a flat frontal impact. The impact force waveform of soft materials was found to consist of a thorn-shaped waveform and a succeeding mountain-shaped waveform. Based on our experimental observations, we believe that a large viscosity resistance is rapidly changed to a small resistance in the course of the impact. In the present study, the cause of this distinct waveform is discussed based on a dynamics model. The study applies a standard linear solid (SLS) model in which the viscosity transient phenomenon is considered is applied. Three types of impact force waveforms of actual soft materials are simulated using the SLS model. Some features of the impact force waveform of soft materials can be explained using the SLS model.
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篇名 Viscosity Transient Phenomenon during Drop Impact Testing and Its Simple Dynamics Model
来源期刊 力学国际期刊(英文) 学科 医学
关键词 Impact FORCE SOFT Material Standard Linear Solid Model VISCOSITY TRANSIENT STRAIN Rate DEPENDENCE
年,卷(期) 2015,(3) 所属期刊栏目
研究方向 页码范围 33-41
页数 9页 分类号 R73
字数 语种
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Impact
FORCE
SOFT
Material
Standard
Linear
Solid
Model
VISCOSITY
TRANSIENT
STRAIN
Rate
DEPENDENCE
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研究分支
研究去脉
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期刊影响力
力学国际期刊(英文)
月刊
2160-049X
武汉市江夏区汤逊湖北路38号光谷总部空间
出版文献量(篇)
280
总下载数(次)
0
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