An Investigation of the Dynamic Elastic Properties of Some High Polymers

Hillier, K W; Kolsky, H.

doi:10.1088/0370-1301/62/2/304

Cited by 52 publications

(6 citation statements)

References 4 publications

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“…Experimental analyses of the force-velocity dynamics of springs are needed. Most dynamic materials tests operate at known strain rates and measure resistive force (58)(59)(60)(61)(62)(63)(64)(65)(66). These tests do not reveal how the actual loading and unloading conditions influence recoil dynamics of the spring.…”

Section: Power Of Springsmentioning

confidence: 99%

The principles of cascading power limits in small, fast biological and engineered systems

Ilton

Bhamla

et al. 2018

Science

222

272

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Mechanical power limitations emerge from the physical trade-off between force and velocity. Many biological systems incorporate power-enhancing mechanisms enabling extraordinary accelerations at small sizes. We establish how power enhancement emerges through the dynamic coupling of motors, springs, and latches and reveal how each displays its own force-velocity behavior. We mathematically demonstrate a tunable performance space for spring-actuated movement that is applicable to biological and synthetic systems. Incorporating nonideal spring behavior and parameterizing latch dynamics allows the identification of critical transitions in mass and trade-offs in spring scaling, both of which offer explanations for long-observed scaling patterns in biological systems. This analysis defines the cascading challenges of power enhancement, explores their emergent effects in biological and engineered systems, and charts a pathway for higher-level analysis and synthesis of power-amplified systems.

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Section: Power Of Springsmentioning

confidence: 99%

The principles of cascading power limits in small, fast biological and engineered systems

Ilton

Bhamla

et al. 2018

Science

222

272

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“…Hillier and Kolsky (106) developed a method for the investigation of the transmission of sound along filaments of high polymers. Tests were made of dynamic elasticity and damping factors of filaments when unrestrained and when being elongated at a constant rate of increase of strain.…”

Section: Agingmentioning

confidence: 99%

Natural and Synthetic Rubbers

Bekkedahl¹

1950

Anal. Chem.

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“…3. The dynamic properties of visco-elastic materials such as polymers have been studied extensively in recent years (Mason, 1960;Hillier and Kolsky, 1949;Lethersich, 1950 ). Most of the experimental work, however, was connected with the uniaxial longitudinal or torsional tests which lead to the determination of Young 1 s modulus or shear modulus.…”

mentioning

confidence: 99%

Vibration of Sphere for Determining the Dilatational Constants of Viscoelastic Materials

Lee

1963

Journal of Applied Physics

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The forced vibration problem of a finite sphere with an exciting source embedded inside it has been treated. The source is assumed to oscillate sinusoidally and the complex dilatational modulus is used to describe the motion inside the sphere. It is found that if the outer surface of the sphere is restrained from radial displacement, the ratio of the amplitude of a mid-point (between the outer surface of the sphere and the inner exciting source) to the amplitude of a point on the exciting source could be used as an indication of the dilatational properties of the sphere. Therefore, from. the criterion of maximum amplitude ratio in conjunction with the frequency, the dilatational properties of a testing material can be determined. This method can be applied to visco-elastic fluids as well as solids.

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An Investigation of the Dynamic Elastic Properties of Some High Polymers

Cited by 52 publications

References 4 publications

The principles of cascading power limits in small, fast biological and engineered systems

The principles of cascading power limits in small, fast biological and engineered systems

Natural and Synthetic Rubbers

Vibration of Sphere for Determining the Dilatational Constants of Viscoelastic Materials

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