Experimental procedure suited for investigating the stress-strain state of shells manufactured from inorganic glass and exposed to an external hydrostatic pressure

1976 ◽  
Vol 8 (8) ◽  
pp. 969-975
Author(s):  
P. F. Zolotarev ◽  
Yu. M. Rodichev ◽  
G. M. Okhrimenko
Keyword(s):  
Hydrostatic Pressure ◽  
Strain State ◽  
Inorganic Glass ◽  
External Hydrostatic Pressure ◽  
Stress Strain ◽  
Experimental Procedure ◽  
Stress Strain State

scholarly journals The stressstrain state of low-head dams’ basis on stratified soil

2016 ◽  
Vol 3 ◽  
pp. 4-9
Author(s):  
Paluanov D.T.
Keyword(s):  
Hydrostatic Pressure ◽  
Strain State ◽  
Soil Base ◽  
Stress Strain ◽  
Stress Strain State ◽  
Low Head ◽  
Calculated Model

This article is considered stress-strain state of low-head dams’ basis on stratified soil. The peculiarities of construction of low-head dams on stratified soils are resulted. The calculated model for the solution of the stress-strain state of low-head dams’ basis is resulted. The calculations of the stress-strain state of soil base under the weight of the constructions and the hydrostatic pressure of water the upstream dam are established.

scholarly journals Research on the Stress-Strain State of the Base of Operating Low-Pressure Hydraulic Structures

2019 ◽  
Vol 9 (1) ◽  
pp. 5257-5260
Keyword(s):  
Hydrostatic Pressure ◽  
Strain State ◽  
Low Pressure ◽  
Technical Condition ◽  
Hydraulic Structures ◽  
Stress Strain ◽  
Stress Strain State ◽  
Weak Soils ◽  
Calculated Model

The analysis of the stress-strain state of one of the operated low-pressure hydraulic structures on weak soils is considered in the paper. Calculated model on estimation of technical condition of designed and operated HS (hydraulic structures) and their bases taking into account a load of own weight of structures and hydrostatic pressure of water of the upper high relief is offered.

Experimental study of the stability and stress-strain state of three-layer fiberglass shells under hydrostatic pressure

1975 ◽  
Vol 7 (7) ◽  
pp. 868-871
Author(s):  
V. S. Bochkovskii ◽  
A. G. Girchenko ◽  
O. A. Goroshko ◽  
I. K. Koshevoi ◽  
A. F. Romanchenko ◽  
...  
Keyword(s):  
Experimental Study ◽  
Hydrostatic Pressure ◽  
Strain State ◽  
Stress Strain ◽  
Stress Strain State ◽  
The Stability

КОНСТРУКТИВНО-ТЕХНОЛОГІЧНІ ОСОБЛИВОСТІ ХВОСТО-ВИХ БАЛОК СІТЧАСТОГО ТИПУ З ПОЛІМЕРНИХ КОМПО-ЗИЦІЙНИХ МАТЕРІАЛІВ ВЕРТОЛЬОТІВ ТРАНСПОРТНОЇ КАТЕГОРІЇ

2020 ◽  
pp. 15-30
Author(s):  
А. Г. Гребеников ◽  
И. В. Малков ◽  
В. А. Урбанович ◽  
Н. И. Москаленко ◽  
Д. С. Колодийчик
Keyword(s):  
Finite Element ◽  
Strain State ◽  
Layer Structure ◽  
Metal Structure ◽  
Element Model ◽  
Stress Strain ◽  
Element Analysis ◽  
Mesh Structure ◽  
Stress Strain State ◽  
Mesh Structures

The analysis of the design and technological features of the tail boom (ТB) of a helicopter made of polymer composite materials (PCM) is carried out.Three structural and technological concepts are distinguished - semi-monocoque (reinforced metal structure), monocoque (three-layer structure) and mesh-type structure. The high weight and economic efficiency of mesh structures is shown, which allows them to be used in aerospace engineering. The physicomechanical characteristics of the network structures are estimated and their uniqueness is shown. The use of mesh structures can reduce the weight of the product by a factor of two or more.The stress-strain state (SSS) of the proposed tail boom design is determined. The analysis of methods for calculating the characteristics of the total SSS of conical mesh shells is carried out. The design of the tail boom is presented, the design diagram of the tail boom of the transport category rotorcraft is developed. A finite element model was created using the Siemens NX 7.5 system. The calculation of the stress-strain state (SSS) of the HC of the helicopter was carried out on the basis of the developed structural scheme using the Advanced Simulation module of the Siemens NX 7.5 system. The main zones of probable fatigue failure of tail booms are determined. Finite Element Analysis (FEA) provides a theoretical basis for design decisions.Shown is the effect of the type of technological process selected for the production of the tail boom on the strength of the HB structure. The stability of the characteristics of the PCM tail boom largely depends on the extent to which its design is suitable for the use of mechanized and automated production processes.A method for the manufacture of a helicopter tail boom from PCM by the automated winding method is proposed. A variant of computer modeling of the tail boom of a mesh structure made of PCM is shown.The automated winding technology can be recommended for implementation in the design of the composite tail boom of the Mi-2 and Mi-8 helicopters.

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