Viscoelastic effects and shrinkage as accompanying phenomena of the curing of polymers. Single- and multiscale effects

PAMM ◽  
2012 ◽  
Vol 12 (1) ◽  
pp. 435-436
Author(s):  
Sandra Klinge ◽  
Alexander Bartels ◽  
Klaus Hackl ◽  
Paul Steinmann
Keyword(s):  
Curing Of Polymers ◽  
Viscoelastic Effects

A Quantitative Theory for the Computation of Tire Friction Under Severe Conditions of Sliding

1986 ◽  
Vol 14 (1) ◽  
pp. 44-72 ◽  
Author(s):  
C. M. Mc C. Ettles
Keyword(s):  
Friction Coefficient ◽  
Flash Temperature ◽  
Contact Conditions ◽  
Quantitative Form ◽  
Heating Effects ◽  
Rubber Friction ◽  
Viscoelastic Effects ◽  
Tire Friction ◽  
Pavement Friction ◽  
Metal Polymer

Abstract It is proposed that tire-pavement friction is controlled by thermal rather than by hysteresis and viscoelastic effects. A numerical model of heating effects in sliding is described in which the friction coefficient emerges as a dependent variable. The overall results of the model can be expressed in a closed form using Blok's flash temperature theory. This allows the factors controlling rubber friction to be recognized directly. The model can be applied in quantitative form to metal-polymer-ice contacts. Several examples of correlation are given. The difficulties of characterizing the contact conditions in tire-pavement friction reduce the model to qualitative form. Each of the governing parameters is examined in detail. The attainment of higher friction by small, discrete particles of aluminum filler is discussed.

Viscoelastic effects in circular edge waves

2021 ◽  
Vol 919 ◽  
Author(s):  
X. Shao ◽  
P. Wilson ◽  
J.B. Bostwick ◽  
J.R. Saylor
Keyword(s):  
Edge Waves ◽  
Viscoelastic Effects

Abstract

scholarly journals An Improved Analytical Solution for Process-Induced Residual Stresses and Deformations in Flat Composite Laminates Considering Thermo-Viscoelastic Effects

Materials ◽  
2018 ◽  
Vol 11 (12) ◽  
pp. 2506 ◽  
Author(s):  
Chao Liu ◽  
Yaoyao Shi
Keyword(s):  
Differential Equation ◽  
Finite Element ◽  
Analytical Solution ◽  
Residual Stresses ◽  
Composite Laminates ◽  
Composite Structures ◽  
Numerical Models ◽  
Element Analysis ◽  
Current Time ◽  
Viscoelastic Effects

Dimensional control can be a major concern in the processing of composite structures. Compared to numerical models based on finite element methods, the analytical method can provide a faster prediction of process-induced residual stresses and deformations with a certain level of accuracy. It can explain the underlying mechanisms. In this paper, an improved analytical solution is proposed to consider thermo-viscoelastic effects on residual stresses and deformations of flat composite laminates during curing. First, an incremental differential equation is derived to describe the viscoelastic behavior of composite materials during curing. Afterward, the analytical solution is developed to solve the differential equation by assuming the solution at the current time, which is a linear combination of the corresponding Laplace equation solutions of all time. Moreover, the analytical solution is extended to investigate cure behavior of multilayer composite laminates during manufacturing. Good agreement between the analytical solution results and the experimental and finite element analysis (FEA) results validates the accuracy and effectiveness of the proposed method. Furthermore, the mechanism generating residual stresses and deformations for unsymmetrical composite laminates is investigated based on the proposed analytical solution.

Viscoelastic effects in slider bearing lubrication

Wear ◽  
1979 ◽  
Vol 54 (1) ◽  
pp. 165-173 ◽  
Author(s):  
Shankar Prasad Mishra ◽  
Bhawani Rout
Keyword(s):  
Slider Bearing ◽  
Viscoelastic Effects

Characterization of the viscoelastic effects of thawed frozen soil on pile by measurement of free response

2018 ◽  
Vol 145 ◽  
pp. 229-236 ◽  
Author(s):  
Feng Xiao ◽  
Gang S. Chen ◽  
J. Leroy Hulsey ◽  
Duane Davis ◽  
Zhaohui Yang
Keyword(s):  
Frozen Soil ◽  
Free Response ◽  
Viscoelastic Effects

Viscoelastic Effects on the Phase Separation in Thermoplastics-Modified Epoxy Resin

2003 ◽  
Vol 36 (20) ◽  
pp. 7746-7751 ◽  
Author(s):  
Wenjun Gan ◽  
Yingfeng Yu ◽  
Minghai Wang ◽  
Qingsheng Tao ◽  
Shanjun Li
Keyword(s):  
Phase Separation ◽  
Epoxy Resin ◽  
Viscoelastic Effects ◽  
Modified Epoxy
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