scholarly journals An alternative procedure to identify stress-strain relation for DP980 sheet over a large strain range

2018 ◽  
Vol 1063 ◽  
pp. 012115 ◽  
Author(s):  
Quoc Tuan Pham ◽  
Young Suk Kim
Keyword(s):  
Large Strain ◽  
Strain Range ◽  
Alternative Procedure ◽  
Stress Strain ◽  
Strain Relation ◽  
Stress Strain Relation

Analytical stress-strain relation for soils

2021 ◽  
Author(s):  
Kristian Krabbenhoft ◽  
J. Wang
Keyword(s):  
Test Data ◽  
Narrow Range ◽  
Strain Range ◽  
Data Sets ◽  
Soil Tests ◽  
Stress Strain ◽  
Strain Relation ◽  
Stress Strain Relation ◽  
Typical Test ◽  
Typical Soil

A new stress-strain relation capable of reproducing the entire stress-strain range of typical soil tests is presented. The new relation involves a total of five parameters, four of which can be inferred directly from typical test data. The fifth parameter is a fitting parameter with a relatively narrow range. The capabilities of the new relation is demonstrated by the application to various clay and sand data sets.

A method of calculation for thermoforming plastics sheets

1970 ◽  
Vol 5 (1) ◽  
pp. 49-57 ◽  
Author(s):  
J G Williams
Keyword(s):  
Large Strain ◽  
Rubber Elasticity ◽  
Thickness Variation ◽  
Stress Strain ◽  
Simple Method ◽  
Method Of Calculation ◽  
Strain Relation ◽  
Stress Strain Relation ◽  
Approximate Form ◽  
Strain Data

Stress-strain data for polymethylmethacrylate at the moulding temperature of 160°C are analysed by a rubber elasticity representation. It is shown that large strain solutions may be obtained for simple geometries with an approximate form of stress-strain relation and examples are given of predictions of profile and thickness variation for blown domes and other axisymmetrical shapes. Forming pressures and loads are predicted by an iteration extension of the simple method together with examples of predictions for shapes formed with conical dies. The comparison of experimental and theoretical values is generally good.

A Study on the Effect of Initial Shear Stress on Dynamic Properties of Saturated Clay

2013 ◽  
Vol 671-674 ◽  
pp. 171-174
Author(s):  
Jian Feng Qi ◽  
Ying Yuan ◽  
Zht Wang
Keyword(s):  
Shear Stress ◽  
Shear Modulus ◽  
Dynamic Properties ◽  
Large Strain ◽  
Damping Ratio ◽  
Dynamic Shear Modulus ◽  
Dynamic Shear ◽  
Stress Strain ◽  
Strain Relation ◽  
Stress Strain Relation

Through a series of tests on saturated remoulded clay, initial shear stress on dynamic shear modulus and damping ratio under the condition of large strain(>10-3) is examined. The test data indicate that initial shear stress effects on stress-strain relation and dynamic modulus and damping ratio are obvious. With the initial shear stress increasing, the characteristic of the stress-strain relation changes from cyclic deformation to accumulative deformation, and there is difference in variation pattern of dynamic shear modulus and damping ratio with cyclic number increasing.

scholarly journals Limit analysis of narrow support elements in W7-X considering the serration effect of the stress–strain relation at 4K

2011 ◽  
Vol 86 (6-8) ◽  
pp. 1462-1465 ◽  
Author(s):  
E. Briani ◽  
C. Gianini ◽  
F. Lucca ◽  
A. Marin ◽  
J. Fellinger ◽  
...  
Keyword(s):  
Limit Analysis ◽  
Stress Strain ◽  
Strain Relation ◽  
Stress Strain Relation

Stress-Strain Relations and Vibrations of a Granular Medium

1957 ◽  
Vol 24 (4) ◽  
pp. 585-593
Author(s):  
J. Duffy ◽  
R. D. Mindlin
Keyword(s):  
Energy Dissipation ◽  
Contact Forces ◽  
Face Centered Cubic ◽  
Stress Strain ◽  
Differential Stress ◽  
Elastic Bodies ◽  
Strain Relation ◽  
Stress Strain Relation ◽  
Face Centered ◽  
Experimental Values

Abstract A differential stress-strain relation is derived for a medium composed of a face-centered cubic array of elastic spheres in contact. The stress-strain relation is based on the theory of elastic bodies in contact, and includes the effects of both normal and tangential components of contact forces. A description is given of an experiment performed as a test of the contact theories and the differential stress-strain relation derived from them. The experiment consists of a determination of wave velocities and the accompanying rates of energy dissipation in granular bars composed of face-centered cubic arrays of spheres. Experimental results indicate a close agreement between the theoretical and experimental values of wave velocity. However, as in previous experiments with single contacts, the rate of energy dissipation is found to be proportional to the square of the maximum tangential contact force rather than to the cube, as predicted by the theory for small amplitudes.

scholarly journals CONCENTRIC LOADING TESTS OF CONCRETE FILLED SPIRAL STEEL TUBES AND STRESS-STRAIN RELATION OF CONCRETE CONFINED BY STEEL TUBES

2009 ◽  
Vol 65 (4) ◽  
pp. 548-563 ◽  
Author(s):  
Mitsuyoshi AKIYAMA ◽  
Hideki NAITO ◽  
Kiyoshi ONO ◽  
Nobutaka SHIRAHAMA ◽  
Daisuke MATSUMOTO ◽  
...  
Keyword(s):  
Stress Strain ◽  
Steel Tubes ◽  
Strain Relation ◽  
Stress Strain Relation ◽  
Loading Tests ◽  
Concentric Loading
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