Zobrazeno 1 - 10
of 257
pro vyhledávání: '"Stelian ALACI,"'
Autor:
Stelian Alaci, Costica Lupascu, Ionut-Cristian Romanu, Delia-Aurora Cerlinca, Florina-Carmen Ciornei
Publikováno v:
Computation, Vol 12, Iss 9, p 181 (2024)
Most studies in the literature consider the value of the coefficient of dynamic friction to be constant. We studied the evolution of a dynamic system when the coefficient of friction results in different values depending on the contact surfaces. A sy
Externí odkaz:
https://doaj.org/article/e819c62b8d76483fb74b821881977964
Publikováno v:
Axioms, Vol 13, Iss 6, p 372 (2024)
A simple dynamic system with dry friction is studied theoretically and numerically. Models of systems including dry friction are not easily obtained, as defining the relationship between the friction force and the relative velocity presents a signifi
Externí odkaz:
https://doaj.org/article/8459f15ce81a4be6a5a045f2232e315c
Publikováno v:
Robotica & Management, Vol 27, Iss 2, Pp 14-17 (2022)
Traditional rehabilitation therapies use simple devices such as elastic bands and foam rollers. They also require the constant presence of a therapist. Rehabilitation exercises are long-lasting, repetitive and require effort from both the patient and
Externí odkaz:
https://doaj.org/article/34e7045e46ed48098bd28275780fd80c
Publikováno v:
Robotica & Management, Vol 27, Iss 2, Pp 6-13 (2022)
The ankle and leg represent an anatomical-functional complex, the role of this complex being to support the body weight in an orthostatic position and to ensure movement, according to the terrain. Therefore, the leg has a static role as well as a dyn
Externí odkaz:
https://doaj.org/article/838d28192bf446d8ba15179c074c0a6d
Autor:
Stelian Alaci, Florina-Carmen Ciornei, Ionut-Cristian Romanu, Ioan Doroftei, Carmen Bujoreanu, Ioan Tamașag
Publikováno v:
Applied Sciences, Vol 14, Iss 5, p 2043 (2024)
The paper proposes a rapid, straightforward, and inexpensive method for finding the basic parameters of helical gears with an involute profile. The basic parameters envisaged are the normal module, normal profile shift coefficient, and the helix angl
Externí odkaz:
https://doaj.org/article/925698ac85e446cfbdd5d4af1e8f5663
Autor:
Stelian Alaci, Florina-Carmen Ciornei, Ionut-Cristian Romanu, Ioan Doroftei, Carmen Bujoreanu, Ioan Tamașag
Publikováno v:
Machines, Vol 11, Iss 12, p 1046 (2023)
This paper proposes a new rapid and straightforward method along with a related device for finding the three basic parameters of an actual external involute spur gear. The number of teeth is easily counted, but the other two parameters—the module a
Externí odkaz:
https://doaj.org/article/6edd77cf368241a0a4e923fb11df29f9
Autor:
Stelian Alaci, Ilie Musca, Carmen Bujoreanu, Ionut-Cristian Romanu, Nicolae-Adrian Nitu, Florina-Carmen Ciornei
Publikováno v:
Lubricants, Vol 11, Iss 8, p 340 (2023)
The paper proposes the study of dry friction by means of a short eccentric rotor. The rotor was designed and realised in the laboratory. In an ideal frictionless situation, a rotor actuated by gravity will have an angular velocity which increases ind
Externí odkaz:
https://doaj.org/article/008de8e8293946a3922e4b2e2bacdf18
Autor:
Stelian Alaci, Ioan Doroftei, Florina-Carmen Ciornei, Ionut-Cristian Romanu, Toma-Marian Ciocirlan, Mariana-Catalina Ciornei
Publikováno v:
Axioms, Vol 12, Iss 7, p 707 (2023)
This study proposes a solution for the transmission of rotation motion between two shafts with crossed directions. For constructive simplicity, the solutions including the planar pair were preferred and, from the two variants, namely structurally sym
Externí odkaz:
https://doaj.org/article/6fb93b80d7cd41699aa6a60505faffad
Publikováno v:
Actuators, Vol 12, Iss 6, p 238 (2023)
The ankle joint (AJ) is a crucial joint in daily life, responsible for providing stability, mobility, and support to the lower limbs during routine activities such as walking, jumping, and running. Ankle joint injuries can occur due to sudden twists
Externí odkaz:
https://doaj.org/article/0aafadd5b50540e8b3ae2cc2fb1cca30
Autor:
Stelian Alaci, Ioan Doroftei, Florina-Carmen Ciornei, Ionut-Cristian Romanu, Ioan-Alexandru Doroftei, Mariana-Catalina Ciornei
Publikováno v:
Mathematics, Vol 11, Iss 9, p 2025 (2023)
There are few examples of mechanical coupling solutions for the transmission of high torques between two rotating shafts that have non-coplanar, non-parallel axes. Based on the structural analysis, the paper proposes a solution for an RP1PR-type symm
Externí odkaz:
https://doaj.org/article/6cd93b7f90ff40678725f6437ae0cf1d