COMSOL Multiphysics Implementation of SMA Bracing for Multi-story Structure

2021 ◽  
pp. 341-349
Author(s):  
Kacper Wasilewski ◽  
Artur Zbiciak
Author(s):  
Jeeyun Oh ◽  
Mun-Young Chung ◽  
Sangyong Han

Despite of the popularity of interactive movie trailers, rigorous research on one of the most apparent features of these interfaces – the level of user control – has been scarce. This study explored the effects of user control on users’ immersion and enjoyment of the movie trailers, moderated by the content type. We conducted a 2 (high user control versus low user control) × 2 (drama film trailer versus documentary film trailer) mixed-design factorial experiment. The results showed that the level of user control over movie trailer interfaces decreased users’ immersion when the trailer had an element of traditional story structure, such as a drama film trailer. Participants in the high user control condition answered that they were less fascinated with, absorbed in, focused on, mentally involved with, and emotionally affected by the movie trailer than participants in the low user control condition only with the drama movie trailer. The negative effects of user control on the level of immersion for the drama trailer translated into users’ enjoyment. The impact of user control over interfaces on immersion and enjoyment varies depending on the nature of the media content, which suggests a possible trade-off between the level of user control and entertainment outcomes.


Jurnal KATA ◽  
2018 ◽  
Vol 2 (1) ◽  
pp. 89
Author(s):  
Nanny Sri Lestari

<p>Sebuah peristiwa, dalam kehidupan manusia, dapat menjadi inspirasi bagi penulisan sebuah cerita. Pengarang, sebagai bagian dari masyarakatnya, mengangkat relung-relung kehidupan manusia, ke dalam sebuah cerita. Namun harus dipahami, bahwa pengalaman pengarang dalam kehidupannya sehari-hari, juga mempengaruhi subjek yang ditulisnya. Saat ini tidak dapat dipungkiri lagi, bahwa teknologi komunikasi yang sangat canggih, telah mempengaruhi perkembangan karya sastra. Media penulisan karya sastra, tidak lagi melalui media cetak seperti kertas tetapi sudah melalui peralatan modern yang sesuai jamannya. Namun demikian ragam karya sastra prosa, seperti cerita pendek, justru mampu mengisi ruang media kommunikasi tersebut. Dua orang pengarang, yang menulis cerita pendek di media masa, berusaha mengangkat isu tentang lingkungan. Isu yang diangkat, lebih menekankan kepada masalah lingkungan alam dengan mengangkat isu tentang pohon sebagai bagian dari kehidupan manusia. Tujuan penelitian ini, untuk menelusuri struktur cerita pendek yang mengangkat isu lingkungan dalam jalinan ceritanya. Untuk memenuhi tujuan penelitian, langkah awal dari penelitian ini, adalah melakukan pendekatan struktur cerita, yang kemudian dikaitkan dengan pencarian makna cerita tersebut. Sering sekali di balik sebuah cerita ada pesan yang ingin disampaikan kepada masyarakat pembacanya. Bentuk pesan tersebut tersirat, dalam jalinan struktur cerita pendek tersebut. Pesan yang disampaikan, dalam kedua cerita pendek tersebut,  adalah pesan tentang lingkungan alam, yang  saat ini tidak pernah diperhatikan oleh masyarakat. Dengan alasan, kebutuhan ekonomi yang sangat dominan.</p><p><em>An event, in human life, can be an inspiration for writing a story. The author, as a part of his society, lifts the niches of human life, into a story. But it must be understood, that the author's experience in everyday life, also affects the subject he wrote.</em><em> </em><em>Today it is undeniable, that highly sophisticated communication technology, has influenced the development of literary works. Media writing literature, no longer through print media such as paper but have been through modern equipment that fit his era.</em><em> </em><em>However, the variety of prose literary works, such as short stories, is able to fill the media space communications. Two authors, who write short stories in the mass media, try to raise issues about the environment. Issues raised, more emphasis on the issue of the natural environment by raising the issue, about the tree as part of human life. The purpose of this research, is to trace the structure of short stories, which raised environmental issues in the composition of the story. To fulfill the purpose of research, the first step of this research, is to approach the structure of the story, which is then linked with the search for the meaning of the story. Very often, behind a story, there is a message to be conveyed to the readers. The form of the message is implied, in the composition of the short story structure. The message conveyed, in both short stories, is a message about the natural environment, which today is never noticed by society. The message conveyed, in both short stories, is a message about the natural environment, which today is never noticed by society.</em></p>


2021 ◽  
Vol 572 (1) ◽  
pp. 94-105
Author(s):  
Mohamed Moustafa ◽  
Ghaylen Laouini ◽  
Mostafa ElNaggar ◽  
Tariq AlZoubi

Author(s):  
Vinyas Mahesh ◽  
Vishwas Mahesh ◽  
Dineshkumar Harursampath ◽  
Ahmed E Abouelregal

This article deals with the modeling of magneto-electro-elastic auxetic structures and developing a methodology in COMSOL Multiphysics® to assess the free vibration response of such structures when subjected to various electromagnetic circuit conditions. The triple energy interaction between elastic, magnetic, and electric fields are established in the COMSOL Multiphysics® using structural mechanics and electromagnetic modules. The multiphase magneto-electro-elastic material with different percentages of piezoelectric and piezomagnetic phases are used as the material. In the solid mechanics module, the piezoelectric and piezomagnetic materials were created in stress-charge and stress-magnetization forms, respectively. The electric and magnetic fields are defined in COMSOL Multiphysics® through electromagnetic equations. Further, the customized controlled meshing constituted of free tetrahedral and triangular elements is adapted to trade-off between the accuracy and the computational expenses. The eigenvalue analysis is performed to obtain the natural frequencies of the MEE re-entrant auxetic structures. Also, the efficiency of smart auxetic structures over conventional honeycomb structures is presented throughout the manuscript. In addition, the discrepancy in the natural frequencies of the structures considering coupled and uncoupled state is also illustrated. It is believed that the modeling procedure and its outcomes serve as benchmark solutions for further design and analysis of smart auxetic magneto-electro-elastic structures.


2021 ◽  
Vol 3 (2) ◽  
Author(s):  
A. Bendaraa ◽  
My. M. Charafi ◽  
A. Hasnaoui

AbstractIn this study, we investigate the thermal behaviour of nanofluids in a double-pipe heat exchanger. It is about a counterflow configuration, designed to cool a lubrication unit of a thermoelectric power plant. The subject of this work is to evaluate the thermal performances of the exchanger by using a nanofluid based on alumina suspension comparing with deionized water. In order to evaluate the thermal performance of the studied configuration, we carried out numerical experiments in an application developed on COMSOL Multiphysics environment, these experiments are utilized to show the feasibility of this application. As result, we found that the nanofluid with an increase in its volume fraction leads to an increase in the overall exchange coefficient, the convective heat transfer coefficient, as well as the efficiency and the power of the exchanger. It is noted that an increase of 1% in volume fraction, can enhance the overall exchange coefficient, the power and the effectiveness of the exchanger by 17.62%, 1.473% and 10.80% respectively. Besides, it is noted that the increase in the concentration of nanofluids leads to a narrowing of the pinch points of the inlet and outlet temperatures, which means that nanofluids are more efficient in cooling temperatures than conventional fluids.


2020 ◽  
Vol 330 ◽  
pp. 01005
Author(s):  
Abderrahmane AISSA ◽  
Mohamed Amine MEDEBBER ◽  
Khaled Al-Farhany ◽  
Mohammed SAHNOUN ◽  
Ali Khaleel Kareem ◽  
...  

Natural convection of a magneto hydrodynamic nanofluid in a porous cavity in the presence of a magnetic field is investigated. The two vertical side walls are held isothermally at temperatures Th and Tc, while the horizontal walls of the outer cone are adiabatic. The governing equations obtained with the Boussinesq approximation are solved using Comsol Multiphysics finite element analysis and simulation software. Impact of Rayleigh number (Ra), Hartmann number (Ha) and nanofluid volume fraction (ϕ) are depicted. Results indicated that temperature gradient increases considerably with enhance of Ra and ϕ but it reduces with increases of Ha.


Sign in / Sign up

Export Citation Format

Share Document