Experimental Research on PBL Connectors Considering the Effects of Concrete Stress State and Other Connection Parameters

2018 ◽  
Vol 23 (1) ◽  
pp. 04017125 ◽  
Author(s):  
Xuewei Wang ◽  
Bing Zhu ◽  
Shengai Cui ◽  
Eric M. Lui
Keyword(s):  
Stress State ◽  
Experimental Research ◽  
Concrete Stress

Experimental research on hydrophilic characteristics of natural soft rock at high stress state

2015 ◽  
Vol 25 (3) ◽  
pp. 489-495 ◽  
Author(s):  
Hongyun Guo ◽  
Xiangyang Lei ◽  
Yumei Zhang ◽  
Guoxing Yang ◽  
Zhang Niu
Keyword(s):  
Stress State ◽  
Experimental Research ◽  
High Stress ◽  
Soft Rock

scholarly journals MODELLING CHLORIDE DIFFUSION IN CONCRETE WITH INFLUENCE OF CONCRETE STRESS STATE

2017 ◽  
Vol 23 (7) ◽  
pp. 955-965 ◽  
Author(s):  
Jian WANG ◽  
Pui-Lam NG ◽  
Weishan WANG ◽  
Jinsheng DU ◽  
Jianyong SONG
Keyword(s):  
Experimental Data ◽  
Diffusion Coefficient ◽  
Stress State ◽  
Diffusion Model ◽  
Stress Ratio ◽  
Chloride Diffusion ◽  
Influence Coefficient ◽  
Chloride Diffusion Coefficient ◽  
Stress Influence ◽  
Concrete Stress

Under coastal or marine conditions, chloride erosion is the major accelerating factor of reinforcement corrosion. Therefore, it is of vital importance to investigate the chloride diffusion model. Research reveals that the concrete stress state has great influence on chloride diffusion; therefore a stress influence coefficient was incorporated in chloride diffusion coefficient model by many researchers. By referring to the experimental data from eight different researchers, the law between stress influence coefficient and concrete stress ratio is studied in detail, and equations relating the stress influence coefficient with the concrete stress ratio are established. Compared with three typical existing groups of equations, it is found that the proposed equations give the most accurate estim.ation of the stress influence coefficient. Hence, the proposed equations can be adopted to improve the valuation of chloride diffusion coefficient, and a modified chloride diffusion model is put forward. Three groups of experimental data are used to validate the modified chloride diffusion model, which is shown to be reasonable and having high prediction accuracy.

Analysis of Two Ball’s Surface Contact Stress Based on Fractal Theory

2011 ◽  
Vol 675-677 ◽  
pp. 619-627 ◽  
Author(s):  
Han Zhao ◽  
Qi Chen ◽  
Kang Huang
Keyword(s):  
Stress State ◽  
Experimental Research ◽  
Contact Stress ◽  
Fractal Theory ◽  
Rolling Bearing ◽  
Contact Model ◽  
Contact Theory ◽  
Practical Application ◽  
Hertz Theory ◽  
Set Up

In order to deeply investigate the contact stress state of two balls, a new fractal contact model of two ball’s surfaces is set up on the basic of traditional contact theory and new fractal contact model theory. It is proved to be true through the predicting result and the contact example respectively by using the traditional Hertz theory and the fractal theory. This model can generally reflect the infections of contact stress by the micro-factors and macro-factors of two balls, so it can ensure veracity and certainness of stress analysis. The establishment of the model supplies a basis and theory foundation for further practical application (such as contact stress calculation of rolling bearing and sliding bearing) and experimental research.

scholarly journals Application of Mindlin's theory for analysis of footing plate bending based on experimental research

2010 ◽  
Vol 8 (2) ◽  
pp. 211-223 ◽  
Author(s):  
Biljana Mladenovic ◽  
Zoran Bonic ◽  
Marina Mijalkovic ◽  
Petar Dancevic ◽  
Nebojsa Davidovic
Keyword(s):  
Stress State ◽  
Analytical Solution ◽  
Experimental Research ◽  
Plate Theory ◽  
Material Behavior ◽  
Plate Bending ◽  
First Order ◽  
Basic Equations ◽  
Concrete Footing ◽  
Mindlin’S Theory

The assumptions and basic equations of the first-order shear deformation plate theory of Mindlin, as one which provides more accurate solutions compared to the classical theory, are briefly presented in this paper. Application of one analytical solution derived according to this theory is presented by use of example of stress-state and deformations calculation of the reinforced concrete footing, which has been the object of recent author's experimental research. Numerical results obtained by applied procedure, which refer to the elastic domain of material behavior, are compared with experimentally obtained data of deflections of footing plate midpoint. .

Experimental research of distribution of residual stress state on 2024 aluminum alloy shocked by multiple lasers

2013 ◽  
Vol 25 (3) ◽  
pp. 593-597
Author(s):  
聂贵锋 Nie Guifeng ◽  
冯爱新 Feng Aixin ◽  
郭儒成 Guo Rucheng ◽  
薛伟 Xue Wei ◽  
施芬 Shi Fen ◽  
...  
Keyword(s):  
Residual Stress ◽  
Aluminum Alloy ◽  
Stress State ◽  
Experimental Research ◽  
2024 Aluminum Alloy ◽  
Residual Stress State

Short Stress State Questionnaire

2015 ◽  
Vol 31 (1) ◽  
pp. 20-30 ◽  
Author(s):  
William S. Helton ◽  
Katharina Näswall
Keyword(s):  
Stress State ◽  
Factor Structure ◽  
Human Performance ◽  
Self Report ◽  
Confirmatory Factor ◽  
Stress States ◽  
Related Stress ◽  
Using Data ◽  
Task Conditions ◽  
Multiple Samples

Conscious appraisals of stress, or stress states, are an important aspect of human performance. This article presents evidence supporting the validity and measurement characteristics of a short multidimensional self-report measure of stress state, the Short Stress State Questionnaire (SSSQ; Helton, 2004 ). The SSSQ measures task engagement, distress, and worry. A confirmatory factor analysis of the SSSQ using data pooled from multiple samples suggests the SSSQ does have a three factor structure and post-task changes are not due to changes in factor structure, but to mean level changes (state changes). In addition, the SSSQ demonstrates sensitivity to task stressors in line with hypotheses. Different task conditions elicited unique patterns of stress state on the three factors of the SSSQ in line with prior predictions. The 24-item SSSQ is a valid measure of stress state which may be useful to researchers interested in conscious appraisals of task-related stress.

Secondary Transfer Effect of Contact

2009 ◽  
Vol 40 (2) ◽  
pp. 55-65 ◽  
Author(s):  
Thomas F. Pettigrew
Keyword(s):  
Cognitive Dissonance ◽  
Experimental Research ◽  
Intergroup Contact ◽  
Transfer Effect ◽  
Evaluative Conditioning ◽  
Transfer Effects ◽  
Secondary Transfer ◽  
Primary Reduction

This paper reviews the evidence for a secondary transfer effect of intergroup contact. Following a contact’s typical primary reduction in prejudice toward the outgroup involved in the contact, this effect involves a further, secondary reduction in prejudice toward noninvolved outgroups. Employing longitudinal German probability samples, we found that significant secondary transfer effects of intergroup contact exist, but they were limited to specific outgroups that are similar to the contacted outgroup in perceived stereotypes, status or stigma. Since the contact-prejudice link is bidirectional, the effect is inflated when prior prejudice reducing contact is not controlled. The strongest evidence derives from experimental research. Both cognitive (dissonance) and affective (evaluative conditioning) explanations for the effect are offered.

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