We consider in this paper the elastic and viscous properties of Silly Putty and confirm the well known fact that the properties depend on the rate at which the material is deformed. Rapid deformations were studied by dropping masses onto one end of a Silly Putty cylinder, and slow deformations were studied by compressing the cylinder in a materials testing machine. The results were compared with a simple engineering model of viscoelastic materials to estimate the stiffness and the viscosity of the Silly Putty cylinder. It was found that stress induced in Silly Putty relaxes with a time constant of about 0.1 s, Young's modulus for a rapid deformation is about 1.7 × 106 N/m2, and the viscosity for a slow compression is about 8 × 104 Pa s. When subject to a short impact, Silly Putty vibrates as a result of compressional wave propagation through the material.
展开▼
机译：我们在本文中考虑了傻腻子的弹性和粘性特性，并证实了众所周知的事实，即该特性取决于材料变形的速率。通过将质量放置到傻腻子圆柱体的一端来研究快速变形，并通过在材料测试机中压缩圆柱体来研究缓慢变形。将结果与粘弹性材料的简单工程模型进行比较，以估算傻油灰缸的刚度和粘度。发现在腻子中诱发的应力以约0.1 s的时间常数松弛，快速变形的杨氏模量约为1.7×106 N / m2，缓慢压缩的粘度约为8×104 Pa s。当受到短时冲击时，由于压缩波传播通过材料，傻腻子会振动。
展开▼
