جستجوی مقالات مرتبط با کلیدواژه « واقعیت مجازی » در نشریات گروه « مکانیک »

Computer simulators are an integral part of the industry today. So that today most of the industries benefit from the useful facilities of this platform in order to accelerate the development of products and reduce production costs. In the meantime, the use of virtual reality simulators and interactive and comprehensive virtual environments in the design and layout of production lines, assembly stages and other production and training processes, increases the skills of employees, improves the level of knowledge and skills of newly hired operators, and It also reduces the costs of building and operating assembly halls. The present article was carried out to simulate an assembling station of the national EF7-TC engine in an engine production line in order to investigate the functioning of the assembly processes with the aim of improving the assembly processes and familiarizing the learners with the assembly process. The final output of virtual workstation simulation was reviewed and evaluated by a number of participants, and finally, users' opinions were collected by a 12-question questionnaire with 5 components, and the results were summarized by the method of frequency analysis and descriptive analysis, and for the reliability of the questionnaire from Alpha. Cronbach was used. The obtained results show that the sense of presence and interaction in the virtual environment of the production line of the assembly station was created favorably for the users, and they also found a proper understanding of the assembly process of Turbo charger parts and were mostly interested in experiencing the use of virtual reality technology again.  Studies indicate that the simulation of assembly processes in the context of interactive virtual reality environment increases the skill level of users before experiencing that process in the real world.

Along with the considerable growth of emerging technologies (such as artificial intelligence and big data, internet of things, blockchain, cloud computing, etc.) and expansion of their application in people’s everyday life, one of the technological concepts which has received more attention recently is the Metaverse or meta-universe. Metaverse as a virtual world is based on Virtual Reality technology and simulates environments, objects, people and their communications in a 3D space and provides a near-reality experience known as immersive experience for users. One of the contexts which is noticeably affected by Metaverse is education. Using VR and Metaverse, we can cope with many existing educational challenges such as space and time limitations, lack of sufficient raw materials, difficulties of equipment maintenance, etc. using cost-effective and low-risk solutions. In this paper, Mechaverse, the Iran’s first domain-specific metaverse of mechanical engineering is introduced which is designed and implemented to provide laboratory courses and skill workshops related to physics and mechanics. Afterwards, necessary tools for development of Mechaverse are described and some defined practical courses and the mechanisms of accessing and using them are discussed.

Virtual reality (VR) exposure therapy is a common treatment for phobia and the efficacy of this technique has proved. The darkness phobia is one of the most common disorders among the children. This is the first research about the darkness phobia and using VR to treat the patients. The VR system designed in this article is composed from two parts: Mechatronic devices and graphics unit. As a child spends most of his/her time at home, the home environment was simulated in the graphics unit. Also by using the mechatronic devices the head motions of the patients were applied to the graphics unit to close more the VR system to the reality. The treatment was conducted two sessions per week over three months. The results showed that the VR graded exposure therapy was successful for reducing fear of the darkness in children. In addition, the feedbacks of interacting with system from the patients were too satisfactory.