Effect of hydraulic and mechanical stresses on cyclic deformation processes of a structured and homogenized silty Luvic Chernozem

2012 ◽  
Vol 125 ◽  
pp. 3-13 ◽  
Author(s):  
Anneka Mordhorst ◽  
Iris Zimmermann ◽  
Stephan Peth ◽  
Rainer Horn
Keyword(s):  
Cyclic Deformation ◽  
Mechanical Stresses ◽  
Deformation Processes

scholarly journals Cyclically Deformed Defects and Topological Mass Constraints

2013 ◽  
Vol 2013 ◽  
pp. 1-18 ◽  
Author(s):  
A. E. Bernardini ◽  
Roldão da Rocha
Keyword(s):  
Quantum Mechanics ◽  
Cyclic Deformation ◽  
Defect Structure ◽  
Analytical Calculation ◽  
Defect Structures ◽  
Constraint Equations ◽  
Straightforward Generalization ◽  
Deformation Processes ◽  
Usual Theory ◽  
Topological Mass

A systematic procedure for obtaining defect structures through cyclic deformation chains is introduced and explored in detail. The procedure outlines a set of rules for analytically constructing constraint equations that involve the finite localized energy of cyclically generated defects. The idea of obtaining cyclically deformed defects concerns the possibility of regenerating a primitive (departing) defect structure through successive, unidirectional, and eventually irreversible, deformation processes. Our technique is applied on kink-like and lump-like solutions in models described by a single real scalar field such that extensions to quantum mechanics follow the usual theory of deformed defects. The preliminary results show that the cyclic device supports simultaneously kink-like and lump-like defects into 3- and 4-cyclic deformation chains with topological mass values closed by trigonometric and hyperbolic deformations. In a straightforward generalization, results concerning the analytical calculation ofN-cyclic deformations are obtained, and lessons regarding extensions from more elaborated primitive defects are depicted.

Stresses in anvil — strip system during production of copper sheets in continuous casting and deformation installation

2020 ◽  
pp. 508-511
Author(s):  
O.S. Lekhov ◽  
D.Kh. Bilalov
Keyword(s):  
Continuous Casting ◽  
Cyclic Deformation ◽  
Deformation Zone ◽  
Deformation Process ◽  
Loading Pattern ◽  
Tangential Stresses ◽  
Nite Element ◽  
Calculation Results ◽  
Deformation Processes

The prospects for development of combined continuous casting and deformation processes in production of sheets from nonferrous metals and alloys are considered. Technological possibilities of combined continuous casting and deformation process installation for production of cooper sheets are described. Problem of simultaneous determination of stress-strain state of metal in cyclic deformation zone and stresses in anvils on reduction force in the production on installation of cooper sheets is given. The calculation results are obtained by solving the problems of elastic-plasticity and elastic by fi nite element method using the ANSYS package. The regularities for the distribution of axial and tangential stresses in the cyclic deformation zone in the production on instal lation of cooper sheets are presented. Design scheme and loading pattern of anvil in the production on installation of cooper sheets is described. The values and regularities of axial stresses distribution in anvils of installation depending on reduction force are presented.

Strain-Rate-Dependent Deformation Behavior of Carbon-Black-Filled Rubber under Monotonic and Cyclic Straining

2007 ◽  
Vol 340-341 ◽  
pp. 1017-1024 ◽  
Author(s):  
Yoshihiro Tomita ◽  
K. Azuma ◽  
M. Naito
Keyword(s):  
Strain Rate ◽  
Cyclic Deformation ◽  
Deformation Behavior ◽  
Viscoelastic Deformation ◽  
Rate Dependent ◽  
Filled Rubber ◽  
Deformation Behaviors ◽  
Deformation Processes ◽  
The Individual ◽  
Cyclic Straining

The constitutive equation of rubber is derived by employing a nonaffine molecular chain network model for an elastic deformation behavior and the reptation theory for a viscoelastic deformation behavior. The results reveal the roles of the individual springs and dashpot, and the strain rate dependence of materials and disentanglement of molecular chains in the monotonic and cyclic deformation behaviors, particularly softening and hysteresis loss, that is, the Mullins effect, occurring in stress-stretch curves under cyclic deformation processes.

scholarly journals Focal Contact Clustering in Osteoblastic Cells under Mechanical Stresses: Microgravity and Cyclic Deformation

2003 ◽  
Vol 10 (2) ◽  
pp. 69-83 ◽  
Author(s):  
Alain Guignandon ◽  
Omar Akhouayri ◽  
Yves Usson ◽  
Aline Rattner ◽  
Norbert Laroche ◽  
...  
Keyword(s):  
Cyclic Deformation ◽  
Mechanical Stresses ◽  
Osteoblastic Cells ◽  
Focal Contact

Focal Contact Clustering in Osteoblastic Cells under Mechanical Stresses: Microgravity and Cyclic Deformation

2003 ◽  
Vol 10 (2) ◽  
pp. 69-83 ◽  
Author(s):  
Christian Alexandre ◽  
Laurence Vico ◽  
Marie-Hélène Lafage-Proust ◽  
Alain Guignandon ◽  
Omar Akhouayri ◽  
...  
Keyword(s):  
Cyclic Deformation ◽  
Mechanical Stresses ◽  
Osteoblastic Cells ◽  
Focal Contact

Metal Fatigue—Past, Current and Future

1991 ◽  
Vol 205 (5) ◽  
pp. 291-304 ◽  
Author(s):  
K J Miller
Keyword(s):  
Fracture Mechanics ◽  
Interdisciplinary Research ◽  
Cyclic Deformation ◽  
Traditional Approach ◽  
Future Research ◽  
Metal Fatigue ◽  
Fatigue Lifetime ◽  
Research Areas ◽  
Recent Developments ◽  
Deformation Processes

Metal fatigue has been a problem for more than 150 years, but because of rapid developments in fracture mechanics analyses, possibly at the expense of the traditional approach based on cyclic deformation processes, afar better understanding of fatigue failure behaviour has recently been achieved. Consequently the engineer now has the basic tools at his/her disposal to make good assessments of the numerous factors that control the fatigue lifetime of engineering materials, components and structures. Additionally, more intensive interdisciplinary research studies involving chemists, materials scientists, mathematicians and physicists—but engineering led—have generated both greater insights into long-known industrial problems and routes to required solutions. This paper traces the growth of recent developments in understanding metal fatigue from the days of our mentors to the present day, and concludes with a brief review of some future research areas that are now available for exploitation.

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