Real Time Simulation Method of Magnetic Field for Visualization System With Augmented Reality Technology

Abstract

In this paper, we propose a real-time visualization system utilizing Augmented Reality Technology for electromagnetics education. It gives an image of magnetic field generated by a bar magnet with a piece of iron in real-time, however the bar magnet and the piece of iron are represented by mock ones. In the newly proposed visualization system, these mocks are captured by a web camera, and mesh needed in the calculation of magnetic field is deformed. Subsequently, a finite element analysis is carried out in very short time and then the magnetic field is immediately visualized. Thereby, it is, in real-time, observable that magnetic flux lines generated by the bar magnet are attracted to a piece of iron. Moreover, when a user moves the mocks, the magnetic flux lines are immediately depicted according to the position of the mocks.

A State-of-the-Art Review of Augmented Reality in Engineering Analysis and Simulation

“…The setup of these systems is normally in a desktop-based environment. Some of the studies [51][52][53][54] allow users to manipulate the position and orientation of the magnet, and examine the variation of the electromagnetic field. After a summary of typical AR engineering analysis and simulation systems, the technologies used in these systems will be discussed in Section 4.…”

“…Clothier et al [63] Assist on-site operation Underkoffler et al [64] Malkawi et al [65,66] Intuitive analysis environment Carmo et al [33,34] Heuveline et al [35,36] Golparvar-Fard et al [67,68] Graf et al [69] Intuitive design environment Broll et al [37] Fukuda et al [38,39] Mechanical engineering & Manufacturing Weidlich et al [70] Intuitive analysis environment NUS AR group, [27,41,42] Paulus, et al [43] Uva et al [44,45,47,48] Issartel et al [71] Bernasconi et al [40] Valentini et al [49,50] Naets et al [72] Moreland et al [73] Regenbrecht et al [74] Intuitive design environment Niebling et al [46] Weidenhausen et al [75] Electromagnetism Buchau et al [76] Training and education Ibáñez et al [51] Silva et al [77] Intuitive analysis environment Mannuß et al [52] Matsutomo et al [53,54] Table 6 summarizes the features and limitations of most of the AR-based engineering analysis and simulation systems. Selected studies use different visualization methods, such as image overlay, OpenGL programming, and special software kit, to visualize volumetric data and numerical simulation results.…”

Real-time finite element structural analysis in augmented reality

“…The magnetic fields are simulated in real time taking advantages of parallel processing with GPU. Another real-time AR visualization system for magnetics education was developed by Matsutomo et al [23]. In this system, the user can move the mock-up magnetic objects freely to investigate the behaviors of magnetic fields.…”

An approach for augmented learning of finite element analysis

“…However, real‐time numerical simulation is technically challenging due the computational intensity, especially for models with considerable numbers of nodes. Matsutomo et al developed two AR visualization systems for magnetics education, in which the simulations are accelerated by using a precomputation and a 2D mesh adaptation method, respectively. In the system reported by Matsutomo et al , 2D magnetic fields are superimposed on real mock‐up objects, and the user can freely move the mock‐up objects to investigate the interference of electromagnetic fields generated using different sources.…”