Research on tri-axial compressive test of concrete under quasi plain-strain condition

2011 ◽  
Author(s):  
Zhe Wang ◽  
Rongwei Tang
Keyword(s):  
Strain Condition ◽  
Compressive Test ◽  
Plain Strain

The Comparison of the Loess Mechanical Properties under Plane Strain and Conventional Triaxial Experiments

2014 ◽  
Vol 919-921 ◽  
pp. 791-794
Author(s):  
Lin Ma
Keyword(s):  
Mechanical Properties ◽  
Moisture Content ◽  
Plane Strain ◽  
Confining Pressure ◽  
Test Method ◽  
The Other ◽  
Strain Condition ◽  
Plane Strain Problem ◽  
Plain Strain ◽  
The Impact

Plane strain problem is currently prevalent in the loess engineering. However, this problem still using conventional triaxial test method for processing. So the paper conducted the plain strain test, analyze differences in plane strain experiments with conventional triaxial experiments under different moisture content and confining pressure. Research shows two points, the first one is the impact on the strength of the soil is more under moisture content than confining pressure, the other is that the soil strength under the plane strain condition is significantly greater than conventional triaxial conditions. It shows that the results were conservative under the plane strain problem at past. It played a certain role in guiding the engineering.

Application of GM Yield Criterion in Plastic Zone of ModeⅠCrack and Burst Pressure for Pipeline

2011 ◽  
Vol 399-401 ◽  
pp. 2189-2194 ◽  
Author(s):  
De Wen Zhao ◽  
Can Ming Li ◽  
Liang Yun Lan ◽  
Shun Hu Zhang
Keyword(s):  
Plastic Zone ◽  
Pipeline Steel ◽  
Yield Criterion ◽  
Burst Pressure ◽  
Mode I ◽  
Strain Condition ◽  
Stress Criterion ◽  
Tresca Criterion ◽  
Plain Strain ◽  
Gm Yield Criterion

Based on GM yield criterion, the analytical solutions for shape and size of mode I crack tip plastic zone and the burst pressure for X70 pipeline steel are derived. Comparing the solutions with those based on Mises and Trasca criteria shows that under plain strain condition the area of plastic zone on GM is between Tresca and Mises solutions, and very close to Mises one. Among the areas Tresca’s is the largest and Mises is the smallest and all three zones are dumbbell shaped. However, for pipeline burst pressure based on Tresca criterion is the smallest and that on Twin shear stress criterion (TSS) is the largest, those on GM and Mises are also very close to each other and lie between Tresca and TSS results.

scholarly journals Experiments of creep rate for over-consolidated clay under plain strain condition and a simple correlation

All Earth ◽  
2021 ◽  
Vol 33 (1) ◽  
pp. 88-97
Author(s):  
Yuzhou Hou ◽  
Yang Zhou ◽  
Boyi Zhao ◽  
Guowei Li
Keyword(s):  
Creep Rate ◽  
Strain Condition ◽  
Simple Correlation ◽  
Plain Strain

The Principal Stresses of Soil Mass in the Direction of Plane Strain

2011 ◽  
Vol 243-249 ◽  
pp. 2657-2665
Author(s):  
De Chun Lu ◽  
Xiu Li Du ◽  
An Nan Zhou ◽  
Yang Ping Yao
Keyword(s):  
Plane Strain ◽  
Principal Stress ◽  
Soil Mass ◽  
Plane Strain Condition ◽  
Strain Condition ◽  
Principal Stresses ◽  
Failure State ◽  
Stress States ◽  
Plain Strain ◽  
Strain Direction

The characteristics of deformation and strength of soils under the plane strain condition can be simplified as a two-dimensional problem. How to easily and reasonably determine the value of principal stress in the direction of plane strain is the key point. Based on the Elastic-plastic stress-strain relationship for soil and test data under the plane strain condition, it is assumed that the relationship between principal stresses in plain strain direction and the principal stresses in the other directions is bilinear. The parameters of bilinear function are determined by one-dimensional consolidation and failure state. The principal stress in plain strain direction is expressed as a function of stress states and material properties. Compared with test results, the rationality of the proposed bilinear principal stress function is testified.

Investigation on Stress and Strain Singularity in LEFM

2006 ◽  
Vol 306-308 ◽  
pp. 31-36
Author(s):  
Zheng Yang ◽  
Wanlin Guo ◽  
Quan Liang Liu
Keyword(s):  
High Stress ◽  
Crack Tip ◽  
Plane Stress State ◽  
Stress And Strain ◽  
Linear Elastic ◽  
Geometrical Nonlinear ◽  
Maximum Crack ◽  
Elastic Fracture ◽  
Plain Strain ◽  
Strain Singularity

Stress and strain singularity at crack-tip is the characteristic of Linear Elastic Fracture Mechanics (LEFM). However, the stress, strain and strain energy at crack-tip may be infinite promoting conflicts with linear elastic hypothesis. It is indicated that the geometrical nonlinear near the crack-tip should not be neglected for linear elastic materials. In fact, the crack-tip blunts under high stress and strain, and the singularity vanishes due to the deformation of crack surface when loading. The stress at crack-tip may still be very high even though the singularity vanishes. The low bound of maximum crack-tip stress is the modulus of elastic in plane stress state, while in plain strain state, it is greater than the modulus of elastic, and will increase with the Poisson’s ratio.

Effect of Bubble Inclusions on the Mechanical Properties of Cast Poly-Methyl Metacrylate

1972 ◽  
Vol 94 (4) ◽  
pp. 847-852 ◽  
Author(s):  
J. D. Stachiw
Keyword(s):  
Mechanical Properties ◽  
Yield Strength ◽  
Loading Condition ◽  
Stress Raiser ◽  
Compressive Yield Strength ◽  
Compressive Test ◽  
Acrylic Plastic ◽  
Methyl Metacrylate ◽  
As Stress ◽  
Stress Raisers

Bubble inclusions present in cast acrylic plastic generally degrade the mechanical properties of the material. To evaluate the effect of bubbles on the mechanical strength of acrylic plastic, 120 tensile and compressive test specimens were machined from massive acrylic castings with bubble inclusions. The specimens were tested under uniaxial loading condition and effect of bubbles on tensile and compressive strength noted. The stress raiser effect of bubbles caused the tensile specimens to fail at stresses 7 to 30 percent lower than observed in specimens without bubbles. The compressive yield strength was not affected by bubbles. However, here the bubbles served as stress raisers also and caused cracks to initiate at the bubble surfaces when the yield strength of acrylic plastic was reached.

A PROPOSAL OF NEW COMPRESSIVE TEST FORM WALL CLAY BLENDED WITH FIBERS FOR PLASTERING

2011 ◽  
Vol 76 (664) ◽  
pp. 1119-1124
Author(s):  
Naoki UTSUNOMIYA ◽  
Minoru YAMANAKA ◽  
Manabu MATSUSHIMA
Keyword(s):  
Compressive Test ◽  
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