On the determination of very early-time viscoelastic properties

1968 ◽  
Vol 16 (2) ◽  
pp. 121-132 ◽  
Author(s):  
J.L. Sackman ◽  
I. Kaya
Keyword(s):  
Viscoelastic Properties ◽  
Early Time

MODELING OF NONLINEAR VIBRATION PROBLEMS WITH FLUID FLOWS THROUGH PIPELINES

2018 ◽  
pp. 44-47
Author(s):  
F.J. Тurayev
Keyword(s):  
Differential Equations ◽  
Nonlinear Vibration ◽  
Viscoelastic Properties ◽  
Construction Material ◽  
Fluid Flows ◽  
Variable Coefficients ◽  
Algebraic Equations ◽  
Flowing Liquid ◽  
Vibration Problems

In this paper, mathematical model of nonlinear vibration problems with fluid flows through pipelines have been developed. Using the Bubnov–Galerkin method for the boundary conditions, the resulting nonlinear integro-differential equations with partial derivatives are reduced to solving systems of nonlinear ordinary integro-differential equations with both constant and variable coefficients as functions of time.A system of algebraic equations is obtained according to numerical method for the unknowns. The influence of the singularity of heredity kernels on the vibrations of structures possessing viscoelastic properties is numerically investigated.It was found that the determination of the effect of viscoelastic properties of the construction material on vibrations of the pipeline with a flowing liquid requires applying weakly singular hereditary kernels with an Abel type singularity.

Dóra Maurer: Proportions & Timing

KronoScope ◽  
2022 ◽  
Vol 21 (2) ◽  
pp. 132-156
Author(s):  
Carla Gabrí
Keyword(s):  
Social Relationships ◽  
Arm Movements ◽  
Early Time ◽  
Early Motion ◽  
Art Scene ◽  
Letterpress Printing ◽  
16Mm Film ◽  
Motion Studies ◽  
Historical Discourses

Abstract This paper aims at re-evaluating two of Hungarian artist Dóra Mauer’s films, the video work Proportions (1979) and the 16mm film Timing (1973/80). Both films follow a rigid structure. In Proportions, Maurer uses a paper roll to compare her own body measures repeatedly; in Timing, she repeatedly folds a white linen to compare the rhythm of her arm movements. Through her use of paper and the gesture of folding, the two films can be read as references to the very origin of the term format, as coined in early letterpress printing. When the notion of format is understood as a determination of a ratio and, as such, as an indexical reference to given social relationships (Summers, 2003), these films unfold sociocultural and political meanings. The present paper traces this spectrum of meaning through the pointed inclusion of historical discourses surrounding early motion studies, the art scene in socialist Hungary in the 1970s, and early time experiments before the advent of precision clocks.

Determination of the Viscoelastic Properties of Apple Flesh

1976 ◽  
Vol 19 (2) ◽  
pp. 0346-0348 ◽  
Author(s):  
J. G. De Baerdemaeker ◽  
L. J. Segerlind
Keyword(s):  
Viscoelastic Properties
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