scholarly journals Comprehensive assessment of the production of a pipe billet with a flange by forging at various temperature conditions

2021 ◽  
Vol 2094 (4) ◽  
pp. 042060
Author(s):  
S B Bogdanov ◽  
A V Alekseev ◽  
Y V Gribachev
Keyword(s):  
Strain State ◽  
Hot Forging ◽  
Simulation Software ◽  
Comprehensive Assessment ◽  
Extrusion Force ◽  
Stress Strain ◽  
Temperature Conditions ◽  
Stress Strain State

Abstract With the help of QForm simulation software, a comprehensive assessment of the production of a pipe billet with a flange is carried out. The paper studies the influence of the temperature of the die tooling on the technological extrusion force, the stress-strain state in the workpiece, as well as the change in the temperature of the semi-finished product, die and punch in the process of hot forging. The article presents the force graphs, the maximum values of the intensity of stresses and the intensity of deformations in the part, as well as the highest values of temperatures.

FEM Study of Stress-Strain State of Elements of Harmonic Gear Drive with Hollow Shaft and Intermediate Rollers

2015 ◽  
Vol 770 ◽  
pp. 464-468
Author(s):  
V.V. Aksenov ◽  
V.Yu. Timofeev ◽  
A.A. Dronov
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Strain State ◽  
Simulation Software ◽  
Stress Strain ◽  
Hollow Shaft ◽  
Gear Drive ◽  
Stress Strain State ◽  
Rolling Elements ◽  
Element Method

Stress-strain state (SSS) of the separator as one of the main elements of the geokhod harmonic gear drive with rolling elements with hollow shaft is considered. The study was conducted by Finite Element Method (FEM) using SolidWorks Simulation software.

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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