scholarly journals Structural analysis of freight car lever transmission with parallel shoe releasing devices taking into account the edge contact of the shoe and wheel

2021 ◽  
Vol 7 (4) ◽  
pp. 328-335
Author(s):  
V.A. Karpychev ◽  
◽  
A.B. Bolotina ◽  
D.V. Kovin ◽  
◽  
...  
Keyword(s):  
Finite Element ◽  
Strain State ◽  
Load Capacity ◽  
Metal Structure ◽  
High Load ◽  
Finite Element Models ◽  
Main Design ◽  
Design Loads ◽  
Freight Car ◽  
High Load Capacity

The article deals with the issues of modeling the stress-strain state of the attachment points of the cab of a wheeled chassis of high load capacity. The main design loads are determined. Geometric and computational finite element models are constructed, taking into account the features of the metal structure. The technique of gluing elements of the grid model is applied. The contact interaction of the parts is taken into account. Based on the calculations performed, conclusions are drawn about the compliance of the developed structure with the strength requirements.

scholarly journals Assessment of the strength of the cabin mounting elements of the high-capacity wheeled chassis

2021 ◽  
Vol 7 (4) ◽  
pp. 404-417
Author(s):  
P.I. Shalupina ◽  
◽  
A.A. Artyomova ◽  
Keyword(s):  
Finite Element ◽  
Strain State ◽  
Load Capacity ◽  
High Capacity ◽  
Metal Structure ◽  
High Load ◽  
Finite Element Models ◽  
Main Design ◽  
Design Loads ◽  
High Load Capacity

The article deals with the issues of modeling the stress-strain state of the attachment points of the cab of a wheeled chassis of high load capacity. The main design loads are determined. Geometric and computational finite element models are constructed, taking into account the features of the metal structure. The technique of gluing elements of the grid model is applied. The contact interaction of the parts is taken into account. Based on the calculations performed, conclusions are drawn about the compliance of the developed structure with the strength requirements.

scholarly journals Simulation of the load of the traction device for towing a heavy trailer

2021 ◽  
Vol 7 (2) ◽  
pp. 176-183
Author(s):  
P.I. Shalupina ◽  
◽  
Yu.V. Ragulina ◽  
Keyword(s):  
Finite Element ◽  
Contact Interaction ◽  
Strain State ◽  
Metal Structure ◽  
Base Station ◽  
Finite Element Models ◽  
Stress Strain ◽  
Main Design ◽  
Traction Device ◽  
Design Loads

The article deals with the issues of modeling the stress-strain state of a traction device designed for towing a heavy trailer, on which the equipment of the base station of a mobile transport and reloading rope complex is placed. The main design loads are defined. Geometric and computational finite element models are constructed, taking into account the features of the metal structure. The method of gluing elements of the grid model is applied. The contact interaction of the parts is taken into account. On the basis of the performed calculations, conclusions are drawn about the compliance of the developed structure with the requirements of strength.

scholarly journals The stress-strain state of the trailer seat-coupling device simulation

2021 ◽  
Vol 7 (3) ◽  
pp. 302-307
Author(s):  
P.I. Shalupina ◽  
◽  
Yu.V. Ragulina ◽  
Keyword(s):  
Strain State ◽  
Device Simulation ◽  
Metal Structure ◽  
Base Station ◽  
Finite Element Models ◽  
Stress Strain ◽  
Main Design ◽  
Stress Strain State ◽  
Traction Device ◽  
Design Loads

The article deals with the issues of modeling the stress-strain state of a traction device designed for towing a heavy semi-trailer, on which the equipment of the base station of a mobile transport and reloading rope complex is placed. The main design loads are defined. Geometric and computational finite element models are constructed, taking into account the features of the metal structure. The method of gluing elements of the grid model is applied. On the basis of the performed calculations, conclusions are drawn about the compliance of the developed structure with the requirements of strength.

scholarly journals A Pneumatic Novel Combined Soft Robotic Gripper with High Load Capacity and Large Grasping Range

Actuators ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 3
Author(s):  
Dan Wang ◽  
Xiaojun Wu ◽  
Jinhua Zhang ◽  
Yangyang Du
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Material Properties ◽  
Load Capacity ◽  
Element Model ◽  
High Load ◽  
Minimum Diameter ◽  
Practical Applications ◽  
Soft Actuator ◽  
High Load Capacity

Pneumatic soft grippers have been widely studied. However, the structures and material properties of existing pneumatic soft grippers limit their load capacity and manipulation range. In this article, inspired by sea lampreys, we present a pneumatic novel combined soft gripper to achieve a high load capacity and a large grasping range. This soft gripper consists of a cylindrical soft actuator and a detachable sucker. Three internal air chambers of the cylindrical soft actuator are inflated, which enables them to hold objects. Under vacuum pressure, the cylindrical soft actuator and the detachable sucker can both adsorb objects. A finite element model was constructed to simulate three inflation chambers for predicting the grasping range of the cylindrical soft actuator. The validity of the finite element model was established by an experiment. The mechanism of holding force and adsorption force were analyzed. Several groups of experiments were conducted to determine adsorption range, holding force, and adsorption force. In addition, practical applications further indicated that the novel combined soft gripper has a high load capacity (10.85 kg) at a low pressure (16 kPa) and a large grasping range (minimum diameter of the object: d = 6 mm), being able to lift a variety of objects with different weights, material properties, and shapes.

scholarly journals Load simulation of a base station chassis of the mobile transport and overloading rope complex

2021 ◽  
Vol 7 (2) ◽  
pp. 166-175
Author(s):  
V.I. Tarichko ◽  
◽  
P.I. Shalupina ◽  
Keyword(s):  
Finite Element ◽  
Strain State ◽  
Metal Structure ◽  
Base Station ◽  
Finite Element Models ◽  
Stress Strain ◽  
Grid Model ◽  
Stress Strain State ◽  
Load Simulation

The article deals with the issues of modeling the stress-strain state of a chassis designed to accommodate the equipment of a mobile transport and overloading rope complex. The main computational cases are determined. Geometric and computational finite element models are constructed, taking into account the features of the metal structure and suspension elements. The method of gluing elements of the grid model is applied. On the basis of the performed calculations, conclusions are drawn about the compliance of the developed structure with the requirements of strength and rigidity.

scholarly journals EVALUATION OF STRESSED-DEFORMED CONDITIONS OF ELEMENTS TRAVERSE WITH LOAD CAPACITY OF 160 TONS

2020 ◽  
pp. 215-232
Author(s):  
Alexander S. Yablokov ◽  
Sergey A. Borunov ◽  
Alexander D. Devin ◽  
Vladislav V. Shutov
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Strain State ◽  
Load Capacity ◽  
Steel Structure ◽  
Metal Structure ◽  
Operating Conditions ◽  
Stress Strain ◽  
Stress Strain State ◽  
Element Method

The article calculates the analysis of the stress-strain state of the traverse, taking into account additional loads acting in full-scale operating conditions. The presented calculation methodology is based on determining the permissible stresses and modeling the structure using the finite element method. A design scheme, a solid-deformed model have been developed, and a finite element method has been calculated in the CAD / CAE system. To determine the operating values ​​in the steel structure of the lower service, we will construct a model in natural values ​​with observance of the given characteristics and geometrical dimensions. The stress-strain state of the traverse elements is quite complex, since both compressive stresses and tensile stresses arise in one element in different planes, which are interchanged during the operation of the lifting structure. The above calculation and analysis of the strength of the metal structure of the lifting structure showed that this approach is suitable for the development on its basis of expert systems for assessing the lifespan of lifting structures, both at the stage of design and at the stage of operation

scholarly journals Load simulation of a semi-trailer of the mobile transport and overloading rope complex

2021 ◽  
Vol 7 (1) ◽  
pp. 73-81
Author(s):  
V.I. Tarichko ◽  
◽  
P.I. Shalupina ◽  
Keyword(s):  
Finite Element ◽  
Strain State ◽  
Metal Structure ◽  
Finite Element Models ◽  
Stress Strain ◽  
Grid Model ◽  
Stress Strain State ◽  
Load Simulation

The article deals with the issues of modeling the stress-strain state of a semi-trailer designed to accommodate the equipment of a mobile transport and overloading rope complex. The main computational cases are determined. Geometric and computational finite element models are constructed, taking into account the features of the metal structure and suspension elements. The method of gluing elements of the grid model is applied. On the basis of the performed calculations, conclusions are drawn about the compliance of the developed structure with the requirements of strength and rigidity.

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.

Sign in / Sign up

Export Citation Format

Share Document