Physical characteristic features of the deformation kinetics of foam plastics

1986 ◽  
Vol 22 (3) ◽  
pp. 379-383
Author(s):  
A. G. Dement'ev ◽  
O. G. Tarakanov
Keyword(s):  
Physical Characteristic ◽  
Deformation Kinetics ◽  
Characteristic Features ◽  
Kinetics Of ◽  
Foam Plastics

INHOMOGENEOUS LARGE DEFORMATION KINETICS OF POLYMERIC GELS

2013 ◽  
Vol 05 (01) ◽  
pp. 1350001 ◽  
Author(s):  
WILLIAM TOH ◽  
ZISHUN LIU ◽  
TENG YONG NG ◽  
WEI HONG
Keyword(s):  
Large Deformation ◽  
Soft Matter ◽  
Inner Core ◽  
Kinetic Studies ◽  
Fe Model ◽  
One Dimensional ◽  
Simplified Approach ◽  
Deformation Kinetics ◽  
Polymeric Gels ◽  
Kinetics Of

This work examines the dynamics of nonlinear large deformation of polymeric gels, and the kinetics of gel deformation is carried out through the coupling of existing hyperelastic theory for gels with kinetic laws for diffusion of small molecules. As finite element (FE) models for the transient swelling process is not available in commercial FE software, we develop a customized FE model/methodology which can be used to simulate the transient swelling process of hydrogels. The method is based on the similarity between diffusion and heat transfer laws by determining the equivalent thermal properties for gel kinetics. Several numerical examples are investigated to explore the capabilities of the present FE model, namely: a cube to study free swelling; one-dimensional constrained swelling; a rectangular block fixed to a rigid substrate to study swelling under external constraints; and a thin annulus fixed at the inner core to study buckling phenomena. The simulation results for the constrained block and one-dimensional constrained swelling are compared with available experimental data, and these comparisons show a good degree of similarity. In addition to this work providing a valuable tool to researchers for the study of gel kinetic deformation in the various applications of soft matter, we also hope to inspire works to adopt this simplified approach, in particular to kinetic studies of diffusion-driven mechanisms.

Elastic Modulus of Pb/Sn Solder Joints in Microelectronics

2002 ◽  
Author(s):  
Cemal Basaran ◽  
Jianbin Jiang
Keyword(s):  
Grain Size ◽  
Elastic Modulus ◽  
Single Crystal ◽  
Solder Alloy ◽  
Ultrasonic Testing ◽  
Heterogeneous Materials ◽  
Testing Methods ◽  
Nano Indentation ◽  
Deformation Kinetics ◽  
Kinetics Of

Young’s modulus (E) values published in literature for the eutectic Pb37/Sn63 and near eutectic Pb40/Sn60 solder alloy vary significantly. One reason for this discrepancy is different testing methods for highly rate sensitive heterogeneous materials, like Pb/Sn alloys, yield different results. In this paper, we study different procedures used to obtain the elastic modulus; analytically, by single crystal elasticity and experimentally by ultrasonic testing and Nano indentation. We compare these procedures and propose a procedure for elastic modulus determination. The deformation kinetics of the Pb/Sn solder alloys is discussed at the grain size level.

Deformation kinetics of the Ti-6Al-4V alloy at low temperatures

1975 ◽  
Vol 6 (1) ◽  
pp. 65-75 ◽  
Author(s):  
B. Meester ◽  
M. Döner ◽  
H. Conrad
Keyword(s):  
Low Temperatures ◽  
Deformation Kinetics ◽  
Kinetics Of

Non-Linear Large Deformation Kinetics of Polymeric Gel

2013 ◽  
Vol 535-536 ◽  
pp. 338-341 ◽  
Author(s):  
William Toh ◽  
Teng Yong Ng ◽  
Zi Shun Liu
Keyword(s):  
Transient Heat Conduction ◽  
Element Model ◽  
Initial State ◽  
Linear Deformation ◽  
Deformation Kinetics ◽  
Polymeric Gels ◽  
Free Swelling ◽  
Non Linear ◽  
Kinetics Of ◽  
Fixed Cylinder

The transient swelling process of polymeric gels is studied and a finite element model is introduced to simulate the phenomena based on existing hyperelastic theory for inhomogeneous swelling of gels and analogies made to transient heat conduction analysis. Examples of free swelling of a cube and a fixed cylinder were investigated, showing the highly non-linear deformation present during transition from the initial state to equilibrium.

Dynamic characteristics of the plastic deformation kinetics of polycrystals

1998 ◽  
Vol 24 (8) ◽  
pp. 645-646
Author(s):  
V. V. Ostashev ◽  
O. D. Shevchenko
Keyword(s):  
Plastic Deformation ◽  
Dynamic Characteristics ◽  
Deformation Kinetics ◽  
Kinetics Of

Deformation kinetics of commercial Ti-50A (0.5 At. Pct Oeq) at low temperatures (T<0.3T m )

1983 ◽  
Vol 14 (12) ◽  
pp. 2545-2556 ◽  
Author(s):  
Chih-An Yin ◽  
M. Döner ◽  
H. Conrad
Keyword(s):  
Low Temperatures ◽  
Deformation Kinetics ◽  
Kinetics Of

scholarly journals The Kinetics of Plastic Flow

1980 ◽  
Vol 35 (11) ◽  
pp. 1152-1161
Author(s):  
B. Faucher ◽  
A. S. Krausz
Keyword(s):  
Plastic Flow ◽  
Activation Parameters ◽  
Initial Step ◽  
Deformation Mechanisms ◽  
Plastic Strain Rate ◽  
Qualitative Comparison ◽  
Deformation Kinetics ◽  
Functional Forms ◽  
Kinetics Of

Abstract The plastic flow associated with the three main methods of combining deformation mechanisms is described in terms of deformation kinetics. It is shown that the determination of the deformation kinetics as the initial step in the analysis is indispensable to the establishment of the activation parameters in functional forms. To this purpose, the effects of stress and temperature on the plastic strain rate are determined for three types of combined mechanisms, and qualitative comparison with experimental results is presented.

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