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 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.

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.

TEM of grain growth and phase transformations during creep of SCS-6 silicon carbide fibers

1995 ◽  
Vol 53 ◽  
pp. 350-351
Author(s):  
L. A. Giannuzzi ◽  
C. A. Lewinsohn ◽  
C. E. Bakis ◽  
R. E. Tressler
Keyword(s):  
Silicon Carbide ◽  
Creep Rate ◽  
Vapor Deposition ◽  
Chemical Vapor ◽  
Primary Creep ◽  
Excess Carbon ◽  
Silicon Carbide Fibers ◽  
Sic Fiber ◽  
Carbon Core ◽  
Grain Width

The SCS-6 SiC fiber is a 142 μm diameter fiber consisting of four distinct regions of βSiC. These SiC regions vary in excess carbon content ranging from 10 a/o down to 5 a/o in the SiC1 through SiC3 region. The SiC4 region is stoichiometric. The SiC sub-grains in all regions grow radially outward from the carbon core of the fiber during the chemical vapor deposition processing of these fibers. In general, the sub-grain width changes from 50nm to 250nm while maintaining an aspect ratio of ~10:1 from the SiC1 through the SiC4 regions. In addition, the SiC shows a <110> texture, i.e., the {111} planes lie ±15° along the fiber axes. Previous has shown that the SCS-6 fiber (as well as the SCS-9 and the developmental SCS-50 μm fiber) undergoes primary creep (i.e., the creep rate constantly decreases as a function of time) throughout the lifetime of the creep test.

Pengaruh Bimbingan Kelompok Terhadap Perilaku Asertif pada Siswa

2018 ◽  
Vol 6 (4) ◽  
pp. 427-446
Author(s):  
Rina Nurviani ◽  
Lilis Satriah
Keyword(s):  
Research Method ◽  
Simple Correlation ◽  
Large Influence ◽  
Assertive Behavior ◽  
The Mind ◽  
Group Guidance

Assertive behavior holds important guidelines for the formation of a person's personality can be improved in group guidance, because in group guidance can be utilized the influence of a person or some individual against other members. This study aims to determine (1) the large influence of group guidance on assertive behavior in the expression of the mind, (2) large influence group guidance on assertive behavior in the expression of feeling, and (3) large influence group guidance on assertive behavior in the expression of mind to students. The research method used in this research is a simple correlation research method. The result of calculation obtained by value of porsentase influence group guidance to assertive behavior in expression of mind equal to 2,5%, in expression of feeling of porsentasenya equal to 4,4%, whereas in expression action only equal to 0,1%. So it can be concluded that group guidance has little effect on assertive behavior in the expression of thoughts, feelings, and actions. The overall influence of group guidance on assertive behavior is only 2.5%.   Perilaku asertif memegang pedoman penting bagi pembentukan kepribadian seseorang dapat ditingkatkan dalam bimbingan kelompok, karena dalam bimbingan kelompok dapat dimanfaatkan pengaruh-pengaruh seseorang atau beberapa individu terhadap anggota lainnya. Penelitian ini bertujuan untuk mengetahui (1) besar pengaruh bimbingan kelompok terhadap perilaku asertif dalam ekspresi pikiran, (2) besar pengaruh bimbingan kelompok terhadap perilaku asertif dalam ekspresi perasaan, dan (3) besar pengaruh bimbingan kelompok terhadap perilaku asertif dalam ekspresi pikiran pada siswa. Metode penelitian yang digunakan dalam penelitian ini yaitu metode penelitian korelasi sederhana. Hasil perhitungan diperoleh nilai porsentase pengaruh bimbingan kelompok terhadap perilaku asertif dalam ekspresi pikiran sebesar 2,5%, dalam ekspresi perasaan porsentasenya sebesar 4,4%, sedangkan dalam ekspresi tindakan hanya sebesar 0,1%. Sehingga dapat disimpulkan bahwa bimbingan kelompok berpengaruh kecil sekali terhadap perilaku asertif dalam ekspresi pikiran, perasaan, dan tindakan. Yang secara keseluruhannya pengaruh bimbingan kelompok terhadap perilaku asertif hanya sebesar 2,5%.

Work Stress and Organisational Citizenship Behaviours (OCBs) in Call Centers Employees

2015 ◽  
Vol 3 (1) ◽  
Author(s):  
Sunita ◽  
Urvashi Singh ◽  
Shalini Singh ◽  
Rajnee Sharma
Keyword(s):  
Negative Impact ◽  
Call Centers ◽  
Negative Relationship ◽  
Married Couples ◽  
Call Centre ◽  
Simple Correlation ◽  
Nuclear Families ◽  
Set Up ◽  
Stress At Work ◽  
The Relationship

The present study was conducted to examine the relationship between organisational stress and organisational citizenship behaviours (OCBs) in employees of call centers. The study also further explored as how stress at work set-up has negative impact on OCBs. A sample of 250 employees working in call centre of Gurgaon belonging to an age group of 25-30 years were selected on availability basis. All were working married couples living in nuclear families. Job stress survey (Spielberger & Vagg, 1999) and Organisational Citizenship Behaviour (Bateman & Organ, 1983) were administered. Data was analysed by using simple correlation and multiple regression. Results showed the negative relationship between organisational stress and OCBs. Results of regression analysis also exhibited the negative impact of stress on OCBs. The implications for the employees are discussed.

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