scholarly journals MODELING OF SHELL THICKNESS THINNING EFFECT ON THE STRESS STATE AND CORROSION FAILURE

2020 ◽  
pp. 15
Author(s):  
Karina N. Abdrakhmanova ◽  
Evgenii V. Yarmonov ◽  
Petr A. Kulakova ◽  
Rezeda R. Tlyasheva
Keyword(s):  
Stress State ◽  
Shell Thickness ◽  
Corrosion Failure ◽  
Thinning Effect

scholarly journals The influence of the thickness of the elastic spherical shell with liquid on its stress-strain state

2020 ◽  
Vol 99 (3) ◽  
pp. 34-43
Author(s):  
O. Sheptylevskyi
Keyword(s):  
Stress Intensity ◽  
Stress State ◽  
Spherical Shell ◽  
Shell Thickness ◽  
Strain State ◽  
Middle Surface ◽  
Excitation Pulse ◽  
Elastic Spherical Shell ◽  
Gas Cavity ◽  
Fluid Separation

Investigations of the dynamics of the system consisting of elastic spherical shell filled with ideal compressible fluid and gas cavity in the center of the system are presented in this paper. The excitation pulse-modulated source is introduced into the gas cavity in the center of the system. The effect of the shell thickness on its dynamics and the stress-state during the pulsations is investigated. The results for radial displacements changes of the middle surface, the thickness of the fluid separation from the shell, the stress intensity in the shell during its free pulsations are obtained. The comparison of calculations for the separation thickness in cases of free and partially fixed shell is carried out.

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.

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