scholarly journals Finite element modeling of a moving load using contact conditions

2018 ◽  
Vol 196 ◽  
pp. 01044
Author(s):  
Sergey Gridnev ◽  
Ilya Ravodin
Keyword(s):  
Finite Element ◽  
Moving Load ◽  
Vibration System ◽  
Contact Conditions ◽  
Surface Conditions ◽  
Numerical Studies ◽  
Vertical Displacements ◽  
Characteristic Points ◽  
Elastically Supported ◽  
Finite Element Systems

The article deals with the issues of simulation of the dynamic moving load on a span structure in the modern finite element systems. The possibility of using the contact conditions in the Midas NFX program to describe the coupled vibrations of a beam and a movable load is investigated. To verify the results obtained, the method of separate modeling of the moving load by use of several forces on the trafficway line is used. The series of numerical studies of an elastically supported dynamical system was performed using two techniques. Graphic charts are obtained mapping vertical displacements of the vibration system characteristic points, depending on the inertial properties of the moving load, on the nodal forces application step, the parameters of surface conditions.

Numerical Simulation of the Severe Cold Bending of Thick Steel Plates

1992 ◽  
Vol 114 (2) ◽  
pp. 246-248
Author(s):  
K. A. Soudki ◽  
M. Sansalone ◽  
A. R. Ingraffea ◽  
H. Vossoughi
Keyword(s):  
Finite Element ◽  
High Strength ◽  
Material Model ◽  
Steel Plates ◽  
Isotropic Hardening ◽  
Surface Conditions ◽  
Numerical Studies ◽  
Cold Bending ◽  
Dimensional Finite Element ◽  
Thick Steel

This paper presents results of a finite element study of the severe cold bending of thick, high-strength steel plates using an explicit, two-dimensional, finite element code. A parametric study was performed to study the effect of contact surface conditions and the plate’s material model on the behavior of the plate during cold bending. The results of these numerical studies were compared with experimental data measured by Weng in 1984 and analytical equations proposed by Dat in 1980. It was found that the model with isotropic hardening and no friction showed the best agreement with the experimental and analytical results.

scholarly journals Application of the erosion algorithm in modeling of structures behavior under impulse loads

2019 ◽  
Vol 221 ◽  
pp. 01003
Author(s):  
Pavel Radchenko ◽  
Stanislav Batuev ◽  
Andrey Radchenko
Keyword(s):  
Finite Element ◽  
High Velocity ◽  
Three Dimensional ◽  
Computer Software ◽  
Dynamic Loads ◽  
Complex Structures ◽  
Numerical Studies ◽  
Contact Surfaces ◽  
Fracture Of Materials ◽  
Solid Bodies

The paper presents results of applying approach to simulation of contact surfaces fracture under high velocity interaction of solid bodies. The algorithm of erosion -the algorithm of elements removing, of new surface building and of mass distribution after elements fracture at contact boundaries is consider. The results of coordinated experimental and numerical studies of fracture of materials under impact are given. Authors own finite element computer software program EFES, allowing to simulate a three-dimensional setting behavior of complex structures under dynamic loads, has been used for the calculations.

Moore-penrose inverse method of topological variation of finite element systems

1997 ◽  
Vol 62 (2) ◽  
pp. 243-251 ◽  
Author(s):  
Ping Liang ◽  
Su Huan Chen ◽  
Cheng Huang
Keyword(s):  
Finite Element ◽  
Inverse Method ◽  
Finite Element Systems

Theory and method of structural variations of finite element systems

AIAA Journal ◽  
1994 ◽  
Vol 32 (9) ◽  
pp. 1911-1919 ◽  
Author(s):  
Ting-Yu Rong ◽  
An-Qi Lu
Keyword(s):  
Finite Element ◽  
Structural Variations ◽  
Finite Element Systems

scholarly journals Finite element analysis of microclimate parameters in the metallurgical crane cabin

2021 ◽  
pp. 10-20
Author(s):  
V. V. Maslenskiy ◽  
◽  
Yu. I. Bulygin ◽  
Keyword(s):  
Finite Element ◽  
Air Conditioning ◽  
Engineering Calculation ◽  
Air Pressure ◽  
The Finite Element Method ◽  
Air Flow Rate ◽  
Ansys Software ◽  
Element Analysis ◽  
Air Conditioning System ◽  
Characteristic Points

Introduction. The article analyzes the microclimate parameters (temperature, speed and air pressure) in the metallurgical crane cabin provided by the air conditioning system using the finite element method integrated into the ANSYS software package. The metallurgical crane cabin air conditioning system was selected based on the engineering calculation of the required air flow rate supply, taking into account factors that affect the system performance, such as the location of the equipment and the degree of its dustiness. Problem Statement. The purpose of this research was to check the efficiency of the air conditioning system of the metallurgical crane cabin, which was selected based on the results of the engineering calculations. Theoretical Part. In the main part of the research, the distribution fields of temperature, speed and air pressure inside the cabin of a metallurgical crane were constructed, the values at the points of which were compared with the hygienic standards. In addition, the factors that affect the adequacy of the developed model were considered, namely the grid structure, the way to set the initial and boundary conditions. Conclusion. The refinement of the analysis grid and the consideration of infiltration in the model eventually allowed us to get more correct results: the temperature at the characteristic points differ by no more than 1.3 °C, the speed values do not exceed the standard 0.3 m/s, the average normalized temperature of 24 °C is maintained in a volume of about 60-70 % of the total cabin volume.

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