A long-term strength criterion in interlayer shear of oriented glass-reinforced plastics

1973 ◽  
Vol 5 (1) ◽  
pp. 20-22 ◽  
Author(s):  
V. T. Tomashevskii ◽  
A. L. Tunik
Keyword(s):  
Strength Criterion ◽  
Term Strength ◽  
Reinforced Plastics ◽  
Interlayer Shear

A long-term strength criterion for frozen clay under complex stress states

2020 ◽  
Vol 176 ◽  
pp. 103089
Author(s):  
Dun Chen ◽  
Wei Ma ◽  
Guoyu Li ◽  
Zhiwei Zhou ◽  
Yanhu Mu
Keyword(s):  
Strength Criterion ◽  
Complex Stress ◽  
Term Strength ◽  
Frozen Clay ◽  
Stress States

scholarly journals Evaluating long-term strength of structures

2019 ◽  
Vol 23 (Suppl. 2) ◽  
pp. 477-488
Author(s):  
Ivan Volkov ◽  
Leonid Igumnov ◽  
Denis Shishulin
Keyword(s):  
Service Life ◽  
Nuclear Power ◽  
Damage Accumulation ◽  
Failure Process ◽  
Strength Criterion ◽  
Term Strength ◽  
Inelastic Behavior ◽  
Deformation And Failure ◽  
Initial Strength

The issue of evaluating strength and service life is discussed as applied to structures, the exploitation properties of which are characterized by multi-parametric nonstationary thermal mechanical effects. The main requirements to mathematical models of the related processes are formulated. In the framework of mechanics of damaged media, a mathematical model describing processes of inelastic deformation and damage accumulation due to creep is developed. The mechanics of damaged media model consists of three interconnected parts: relations defining inelastic behavior of the material accounting for its dependence on the failure process, equations describing kinetics of damage accumulation, and a strength criterion of the damaged material. The results of numerically simulating the carrying capacity of a nuclear power plant reactor vessel in the event of a hypothetical emergency are presented. Emergency conditions were modeled by applying pressure modeling the effect of melt-down, the constant internal pressure and temperature varying within the part of the vessel in question. The analysis of the obtained numerical results made it possible to note a number of characteristic features accompanying the process of deformation and failure of such facilities, connected with the time and place of the forming macrocracks, the stressed-strained state history and the damage degree in the failure zone, etc. The results of comparing the numerical and experimental data make it possible to conclude that the proposed defining relations of mechanics of damaged media adequately describe degradation of the initial strength properties of the material for the long-term strength mechanism and can be effectively used in evaluating strength and service life of structures under thermal mechanical loading.

Prediction of long-term strength of reinforced plastics. Treatment of prot linear stress-rupture data

1962 ◽  
Vol 2 (2) ◽  
pp. 126-134 ◽  
Author(s):  
Harold S. Loveless ◽  
Charles W. Deeley ◽  
Donald L. Swanson
Keyword(s):  
Stress Rupture ◽  
Term Strength ◽  
Reinforced Plastics ◽  
Rupture Data

Long-term strength of glass-reinforced plastics in dilute sulphuric acid

1982 ◽  
Vol 17 (12) ◽  
pp. 3491-3498 ◽  
Author(s):  
J. Aveston ◽  
J. M. Sillwood
Keyword(s):  
Sulphuric Acid ◽  
Term Strength ◽  
Reinforced Plastics

scholarly journals CRITERIAL METHOD OF CALCULATIONS OF LONG-TERM STABILITY OF THE BOREHOLE

2018 ◽  
pp. 79-84
Author(s):  
O. A. Shipilova ◽  
S. V. Shafieva
Keyword(s):  
Strength Criterion ◽  
Oil Wells ◽  
Term Strength ◽  
Short Term ◽  
Term Stability ◽  
Long Term Stability ◽  
Short Term Strength

The article examines the possibility of applying the Mohr - Coulomb short-term strength criterion to the calculations of long-term stability of open oil wells. The results of calculation of long-term and short-term strength on the basis of the polygon of stability are analyzed.

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