scholarly journals GRID-CHARACTERISTIC METHOD FOR NUMERICAL MODELING OF WAVE PROCESSES IN THREE-DIMENSIONAL PROBLEMS OF DYNAMIC LOADING OF COMPLEX STRUCTURES

2015 ◽  
Vol 7 (1) ◽  
pp. 34-47
Author(s):  
Igor B. Petrov ◽  
◽  
Alena V. Favorskaya ◽  
Nikolay I. Khokhlov ◽  
Vladislav A. Miryakha ◽  
...  
Keyword(s):  
Numerical Modeling ◽  
Dynamic Loading ◽  
Three Dimensional ◽  
Characteristic Method ◽  
Complex Structures ◽  
Wave Processes

The Utility of Numerical Methods in NDE

2013 ◽  
Author(s):  
Jason K. Van Velsor ◽  
Jeffrey Milligan ◽  
Michael Greveling ◽  
Matthew S. Lindsey
Keyword(s):  
Numerical Modeling ◽  
Three Dimensional ◽  
Fatigue Cracking ◽  
Cost Effective ◽  
Ultrasonic Field ◽  
Guided Wave ◽  
Complex Structures ◽  
Three Dimensional Modeling ◽  
Processing Power ◽  
Array Transducer

When applied with physically meaningful inputs that have been guided by analytical analysis, numerical modeling is a quick and cost-effective virtual experiment that has the added benefit of being free of experimental error. Furthermore, with the rapidly evolving processing power of modern computers, highly complex structures and physical phenomena can be modeled with relative ease. This paper discusses the application of semi-analytical and fully numerical modeling methods as employed for the study of ultrasonic techniques in complex structures and materials. A brief review of these two numerical modeling approaches is presented followed by several practical examples that highlight the utility of each technique. One example presented includes the simulation of the ultrasonic field created in a dissimilar metal weld by a linear phased array transducer. A second example presented includes the three-dimensional modeling of guided wave propagation through elbow fittings in a pipe. Finally, a metrological process for the translation of real, geometrically complex components into the modeling environment is presented and the modeled response from fatigue cracking in a thick walled carbon steel turbine shell is compared with the actual defect response.

Features of Shock-Wave Processes and Fracture in Anisotropic Materials

2013 ◽  
Vol 592-593 ◽  
pp. 287-290 ◽  
Author(s):  
Andrey Radchenko ◽  
Pavel Radchenko ◽  
Stanislav Batuev
Keyword(s):  
Shock Wave ◽  
Numerical Modeling ◽  
Three Dimensional ◽  
Phenomenological Approach ◽  
Anisotropic Materials ◽  
Wave Processes ◽  
Dimensional Statement

For the description of the behavior of anisotropic materials within the framework of the phenomenological approach the model which is taking into account distinctions in strength on compression and a stretching is offered. The model as allows carrying out researches with any orientation of properties of a material concerning system of coordinates. Numerical modeling is carried out in three-dimensional statement. The range of velocities of interaction up to 3000 m/sec is considered.

Novel three-dimensional multi-objective numerical modeling for hot strip tandem rolling

2021 ◽  
Author(s):  
Lianjie Li ◽  
Jianxin Li ◽  
Haibo Xie ◽  
Hongqiang Liu ◽  
Li Sun ◽  
...  
Keyword(s):  
Numerical Modeling ◽  
Three Dimensional ◽  
Multi Objective ◽  
Hot Strip

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.

Three-Dimensional Numerical Modeling of Convective Heat Transfer During Shallow-Depth Forced-Air Drying of Brown Rice Grains

2015 ◽  
Vol 33 (11) ◽  
pp. 1350-1359 ◽  
Author(s):  
Jonathan H. Perez ◽  
Fumina Tanaka ◽  
Fumihiko Tanaka ◽  
Daisuke Hamanaka ◽  
Toshitaka Uchino
Keyword(s):  
Heat Transfer ◽  
Numerical Modeling ◽  
Convective Heat Transfer ◽  
Convective Heat ◽  
Three Dimensional ◽  
Brown Rice ◽  
Shallow Depth ◽  
Air Drying ◽  
Rice Grains ◽  
Forced Air
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