Zobrazeno 1 - 10
of 6 824
pro vyhledávání: '"natural frequencies"'
Publikováno v:
IET Electric Power Applications, Vol 18, Iss 10, Pp 1200-1213 (2024)
Abstract The vibration and acoustic noise of a permanent‐magnet synchronous motor are analysed and evaluated. Acoustic noise sound levels, their prominent frequencies, and the noisiest motor speed range are predicted. According to many resources, t
Externí odkaz:
https://doaj.org/article/120052c0c55f4609b5b158521ecc4a31
Autor:
Can Wang, Bensheng Xu
Publikováno v:
Journal of Applied Science and Engineering, Vol 28, Iss 7, Pp 1385-1395 (2024)
Understanding the vibrational behavior of bars is crucial in engineering structures due to their extensive use in mechanical applications. Hence, exploring the longitudinal vibrations of rods under different support conditions, particularly in the p
Externí odkaz:
https://doaj.org/article/9dd3caf5fc734031acffbd4c7685e0cd
Autor:
Alessandro Demichelis, Malvina Ongaro
Publikováno v:
AIMS Geosciences, Vol 10, Iss 3, Pp 540-552 (2024)
On April 6, 2009, a magnitude 6.3 earthquake struck L'Aquila, Italy, causing extensive damage and loss of life, and raising significant issues around the communication of scientific risk. In the preceding weeks, increased seismic activity had alarmed
Externí odkaz:
https://doaj.org/article/6020b63fa2d1401c926233193fee1076
Publikováno v:
Naučno-tehničeskij Vestnik Informacionnyh Tehnologij, Mehaniki i Optiki, Vol 24, Iss 3, Pp 500-504 (2024)
The results of a study of small transverse vibrations of a string and Bernoulli-Euler beam with a concentrated inclusion are presented. The physical properties of the string and the beam are assumed to be constant, the inclusion is modeled using the
Externí odkaz:
https://doaj.org/article/b936589f406845da848c58cd031fb9ff
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-11 (2024)
Abstract Spontaneous rhythmic movements are part of everyday life, e.g., in walking, clapping or music making. Humans perform such spontaneous motor actions at different rates that reflect specific biomechanical constraints of the effector system in
Externí odkaz:
https://doaj.org/article/19546d7e08454705b3d673f24d9d0038
Publikováno v:
Frontiers in Psychology, Vol 15 (2024)
Externí odkaz:
https://doaj.org/article/5ccb82ef16d44a8ca6c5c5f455310ae1
Publikováno v:
Надежность и качество сложных систем, Iss 3 (2024)
Background. The aim of the work is to develop an engineering methodology for calculating printed circuit board assemblies with a rigid substrate. The analysis of methods and techniques for calculating resonance-free (in the operating frequency rang
Externí odkaz:
https://doaj.org/article/12b81b8d1ad844d88de48de114575c9c
Autor:
Nara Silveira Velloso, Fábio Lúcio Santos, Domingos Sárvio Magalhães Valente, Francisco de Assis de Carvalho Pinto, Mariana Ribeiro Pereira, Jéssica Pontes Rangel
Publikováno v:
Brazilian Archives of Biology and Technology, Vol 67 (2024)
Abstract The macaw palm is a palm tree with wide geographic distribution. The aim of this work was to determine the modal properties of the macaw palm fruit-rachilla system subjected to mechanical vibrations. Three-dimensional models were elaborated
Externí odkaz:
https://doaj.org/article/8107088d47e44e039d0ab65225ecb561
Publikováno v:
Studia Universitatis Babeş-Bolyai. Engineering, Vol 69, Iss 1 (2024)
The paper presents the modification of the first 6 natural frequencies for a PCB case where the material quality was modified from Ultradur B4300 G6 material in AlSi12Cu1 aluminum alloy. Following the change in the quality of the materials, the natur
Externí odkaz:
https://doaj.org/article/52b4e6b0f2ef45948b008fd1d9d10f7b
Publikováno v:
Results in Engineering, Vol 23, Iss , Pp 102725- (2024)
Explicitly modeling Printed Circuit Boards (PCBs) in Finite Element Analysis (FEA) is not practical due to the complex multi-component structure of PCBs. To overcome this complication, a PCB can be simplified and modeled as an orthotropic plate with
Externí odkaz:
https://doaj.org/article/b41d534d1ef24a6fb08a0c5b48c7e903