Laws of the creep and fracture of shell materials-under cyclic loading in a complex stress state

1988 ◽  
Vol 20 (3) ◽  
pp. 296-301
Author(s):  
F. F. Giginyak ◽  
B. T. Timofeev ◽  
M. V. Storchak ◽  
O. K. Shkodzinskii ◽  
V. V. Bashta
Keyword(s):  
Stress State ◽  
Cyclic Loading ◽  
Complex Stress ◽  
Complex Stress State

Life of Structural Steels Under Cyclic Loading at Complex Stress State

1992 ◽  
pp. 805-810
Author(s):  
Felix F. Giginyak ◽  
Aleksandr A. Lebedev ◽  
Boris T. Timofeev ◽  
Yurij G. Dragunov ◽  
Andrej V. Getmanchuk ◽  
...  
Keyword(s):  
Stress State ◽  
Cyclic Loading ◽  
Complex Stress ◽  
Structural Steels ◽  
Complex Stress State

Effect of disruptions in cyclic loading on the endurance of steel 15Kh2NMFA in a complex stress state

1987 ◽  
Vol 19 (5) ◽  
pp. 600-602
Author(s):  
A. A. Lebedev ◽  
F. F. Giginyak ◽  
M. V. Storchak
Keyword(s):  
Stress State ◽  
Cyclic Loading ◽  
Complex Stress ◽  
Complex Stress State ◽  
Steel 15Kh2nmfa

Shear band evolution related with thermal annealing revealing ductile-brittle transition of Zr35Ti30Be27.5Cu7.5 metallic glass under complex stress state

2022 ◽  
Vol 140 ◽  
pp. 107378
Author(s):  
Xiangkui Liu ◽  
Tianchi Wang ◽  
Qipeng Wang ◽  
Xinxiang Song ◽  
Yuzheng Liang ◽  
...  
Keyword(s):  
Stress State ◽  
Shear Band ◽  
Metallic Glass ◽  
Thermal Annealing ◽  
Complex Stress ◽  
Complex Stress State ◽  
Brittle Transition

scholarly journals NONLINEAR DEFORMATION-FORCE MODEL OF A CONCRETE BAR WITH NON-METALLIC COMPOSITE REINFORCEMENT IN THE GENERAL CASE OF A STRESSED STATE

2021 ◽  
Vol 3 (1) ◽  
pp. 6-26
Author(s):  
I. Karpiuk ◽  
◽  
Ye. Klymenko ◽  
V. Karpiuk ◽  
M. Karpiuk ◽  
...  
Keyword(s):  
Stress State ◽  
Stressed State ◽  
Bearing Capacity ◽  
Nonlinear Deformation ◽  
Complex Stress ◽  
Complex Stress State ◽  
Force Model ◽  
Metallic Composite ◽  
Aggressive Environment ◽  
Deformation Force

The article discusses a nonlinear deformation-force model of a concrete bar structure with a non-metallic composite reinforcement (NKA-FRP) in the general case of a stressed state, when all four internal force factors from an external load (namely, bending and twisting moments, transverse and longitudinal forces). A sufficiently deep and meaningful analysis of well-known studies on the selected topic is given. It has been established that the proposed nonlinear deformation-force model of a bar structure with FRP in the general case of a stressed state can be practically useful due to the possibility of its application in the design or reinforcement of beams, girders, columns and elements of rosette trusses of rectangular cross-section, which are operated under aggressive environmental conditions. This model can also be used to check the bearing capacity of existing FRP concrete bar structures, which operate not only under the influence of an aggressive environment, but also under conditions of a complex stress-strain state. In the course of the research, an algorithm was developed for determining the bearing capacity of the design section of a concrete rod with FRP under its complex stress state. General physical relations for the design section are given in the form of a stiffness matrix. The algorithm for calculating a concrete bar with FRP consists of a block for inputting the initial data, the main part, auxiliary subroutines for checking the conditions for increasing the load vector and depletion of the bearing capacity, as well as a block for printing the calculation results. At each stage of a simple static stepwise increasing load, the calculation is carried out by performing a certain number of iterations until the accuracy of determining all components of the deformation vector satisfies a certain predetermined value. The features and patterns of changes in normal and tangential stresses, generalized linear and angular deformations, as well as the equations of equilibrium of a concrete bar with FRP, which operates under the influence of an aggressive environment under conditions of a complex stress state, are also considered.

Micromechanical Analysis of SiC/Ti6Al4V Composite Under Complex Stress State

2022 ◽  
Author(s):  
Pengjian Zou ◽  
Xuming Niu ◽  
Xihui Chen ◽  
Zhigang Sun ◽  
Yan Liu ◽  
...  
Keyword(s):  
Stress State ◽  
Complex Stress ◽  
Complex Stress State ◽  
Micromechanical Analysis

Application of the concept of criterion of a complex stress state to a simple tension for appraisal of resistance of fatigue of structural materials. Part 2. Drawing up criterion and its checking on compliance to experimental data

2021 ◽  
pp. 41-45
Author(s):  
P.N. Kozlov
Keyword(s):  
Experimental Data ◽  
Stress State ◽  
Structural Material ◽  
Complex Stress ◽  
Complex Stress State ◽  
Static Loads ◽  
Regular Change ◽  
Regular Cycle ◽  
Simple Tension ◽  
Dangerous Point

The criterion for appraisal of resistance of fatigue of structural material at action on it of repeatedly variables loads and static loads in the form of a bend or tensioncompression together with torsion, and also at action of loads, which create two-axis regular change of stress state in a dangerous point of material is constructed. The received criterion will acceptable be coordinated with the known experimental data. Keywords: dangerous point of material, regular cycle of loading, equivalent amplitude, equivalent average stress, chart of extreme amplitudes of stresses. [email protected]

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