OGRINEC, Primož ;ČEPON, Gregor ;BOLTEŽAR, Miha . Introduction of Welds into the Dynamic Model of Laminated Structures. Strojniški vestnik - Journal of Mechanical Engineering, [S.l.], v. 64, n.2, p. 73-81, june 2018. ISSN 0039-2480. Available at: <https://www.sv-jme.eu/sl/article/introducing-welds-into-the-dynamic-model-of-laminated-structures/>. Date accessed: 19 nov. 2024. doi:http://dx.doi.org/10.5545/sv-jme.2017.4915.
Ogrinec, P., Čepon, G., & Boltežar, M. (2018). Introduction of Welds into the Dynamic Model of Laminated Structures. Strojniški vestnik - Journal of Mechanical Engineering, 64(2), 73-81. doi:http://dx.doi.org/10.5545/sv-jme.2017.4915
@article{sv-jmesv-jme.2017.4915,
author = {Primož Ogrinec and Gregor Čepon and Miha Boltežar},
title = {Introduction of Welds into the Dynamic Model of Laminated Structures},
journal = {Strojniški vestnik - Journal of Mechanical Engineering},
volume = {64},
number = {2},
year = {2018},
keywords = {laminated structure; electric stator package; dynamics; contact model; weld; modal analysis},
abstract = {Laminated structures, like an electric stator package, exhibit orthotropic behaviour and high levels of internal damping due to the inter-laminar friction forces. Modelling the complex geometry, number of laminae, spatial pressure distribution, and the effects of welds on the dynamic response of laminated structure remains a challenging issue. The presence of welds, that serve as a physical connection between laminae, results in non-uniform pressure distribution between laminae. Usually orthotropic material properties are proposed to account for lower stiffness in the sheet stacking direction. These models assume uniform distribution of friction forces and may even lead to occurrence of additional, unrealistic mode shapes. In this paper the dynamics model of the electric machine stator is proposed that employs a new contact formulation using beam elements, characterized by stiffness and damping parameters in the tangential direction and nonlinear contact stiffness in the normal contact direction. The welds and the welding process itself are represented using spring-thermo elasto-plastic bar model. As the contact model assumes nonuniform pressure distribution it is possible to include the effect of residual stresses that occur after the welding process. The validity of developed numerical model is demonstrated by comparing numerically and experimentally obtained eigenfrequencies and modes for three different stator packets that differ in geometry, position and the number of welds.},
issn = {0039-2480}, pages = {73-81}, doi = {10.5545/sv-jme.2017.4915},
url = {https://www.sv-jme.eu/sl/article/introducing-welds-into-the-dynamic-model-of-laminated-structures/}
}
Ogrinec, P.,Čepon, G.,Boltežar, M. 2018 June 64. Introduction of Welds into the Dynamic Model of Laminated Structures. Strojniški vestnik - Journal of Mechanical Engineering. [Online] 64:2
%A Ogrinec, Primož %A Čepon, Gregor %A Boltežar, Miha %D 2018 %T Introduction of Welds into the Dynamic Model of Laminated Structures %B 2018 %9 laminated structure; electric stator package; dynamics; contact model; weld; modal analysis %! Introduction of Welds into the Dynamic Model of Laminated Structures %K laminated structure; electric stator package; dynamics; contact model; weld; modal analysis %X Laminated structures, like an electric stator package, exhibit orthotropic behaviour and high levels of internal damping due to the inter-laminar friction forces. Modelling the complex geometry, number of laminae, spatial pressure distribution, and the effects of welds on the dynamic response of laminated structure remains a challenging issue. The presence of welds, that serve as a physical connection between laminae, results in non-uniform pressure distribution between laminae. Usually orthotropic material properties are proposed to account for lower stiffness in the sheet stacking direction. These models assume uniform distribution of friction forces and may even lead to occurrence of additional, unrealistic mode shapes. In this paper the dynamics model of the electric machine stator is proposed that employs a new contact formulation using beam elements, characterized by stiffness and damping parameters in the tangential direction and nonlinear contact stiffness in the normal contact direction. The welds and the welding process itself are represented using spring-thermo elasto-plastic bar model. As the contact model assumes nonuniform pressure distribution it is possible to include the effect of residual stresses that occur after the welding process. The validity of developed numerical model is demonstrated by comparing numerically and experimentally obtained eigenfrequencies and modes for three different stator packets that differ in geometry, position and the number of welds. %U https://www.sv-jme.eu/sl/article/introducing-welds-into-the-dynamic-model-of-laminated-structures/ %0 Journal Article %R 10.5545/sv-jme.2017.4915 %& 73 %P 9 %J Strojniški vestnik - Journal of Mechanical Engineering %V 64 %N 2 %@ 0039-2480 %8 2018-06-26 %7 2018-06-26
Ogrinec, Primož, Gregor Čepon, & Miha Boltežar. "Introduction of Welds into the Dynamic Model of Laminated Structures." Strojniški vestnik - Journal of Mechanical Engineering [Online], 64.2 (2018): 73-81. Web. 19 Nov. 2024
TY - JOUR AU - Ogrinec, Primož AU - Čepon, Gregor AU - Boltežar, Miha PY - 2018 TI - Introduction of Welds into the Dynamic Model of Laminated Structures JF - Strojniški vestnik - Journal of Mechanical Engineering DO - 10.5545/sv-jme.2017.4915 KW - laminated structure; electric stator package; dynamics; contact model; weld; modal analysis N2 - Laminated structures, like an electric stator package, exhibit orthotropic behaviour and high levels of internal damping due to the inter-laminar friction forces. Modelling the complex geometry, number of laminae, spatial pressure distribution, and the effects of welds on the dynamic response of laminated structure remains a challenging issue. The presence of welds, that serve as a physical connection between laminae, results in non-uniform pressure distribution between laminae. Usually orthotropic material properties are proposed to account for lower stiffness in the sheet stacking direction. These models assume uniform distribution of friction forces and may even lead to occurrence of additional, unrealistic mode shapes. In this paper the dynamics model of the electric machine stator is proposed that employs a new contact formulation using beam elements, characterized by stiffness and damping parameters in the tangential direction and nonlinear contact stiffness in the normal contact direction. The welds and the welding process itself are represented using spring-thermo elasto-plastic bar model. As the contact model assumes nonuniform pressure distribution it is possible to include the effect of residual stresses that occur after the welding process. The validity of developed numerical model is demonstrated by comparing numerically and experimentally obtained eigenfrequencies and modes for three different stator packets that differ in geometry, position and the number of welds. UR - https://www.sv-jme.eu/sl/article/introducing-welds-into-the-dynamic-model-of-laminated-structures/
@article{{sv-jme}{sv-jme.2017.4915},
author = {Ogrinec, P., Čepon, G., Boltežar, M.},
title = {Introduction of Welds into the Dynamic Model of Laminated Structures},
journal = {Strojniški vestnik - Journal of Mechanical Engineering},
volume = {64},
number = {2},
year = {2018},
doi = {10.5545/sv-jme.2017.4915},
url = {https://www.sv-jme.eu/sl/article/introducing-welds-into-the-dynamic-model-of-laminated-structures/}
}
TY - JOUR AU - Ogrinec, Primož AU - Čepon, Gregor AU - Boltežar, Miha PY - 2018/06/26 TI - Introduction of Welds into the Dynamic Model of Laminated Structures JF - Strojniški vestnik - Journal of Mechanical Engineering; Vol 64, No 2 (2018): Strojniški vestnik - Journal of Mechanical Engineering DO - 10.5545/sv-jme.2017.4915 KW - laminated structure, electric stator package, dynamics, contact model, weld, modal analysis N2 - Laminated structures, like an electric stator package, exhibit orthotropic behaviour and high levels of internal damping due to the inter-laminar friction forces. Modelling the complex geometry, number of laminae, spatial pressure distribution, and the effects of welds on the dynamic response of laminated structure remains a challenging issue. The presence of welds, that serve as a physical connection between laminae, results in non-uniform pressure distribution between laminae. Usually orthotropic material properties are proposed to account for lower stiffness in the sheet stacking direction. These models assume uniform distribution of friction forces and may even lead to occurrence of additional, unrealistic mode shapes. In this paper the dynamics model of the electric machine stator is proposed that employs a new contact formulation using beam elements, characterized by stiffness and damping parameters in the tangential direction and nonlinear contact stiffness in the normal contact direction. The welds and the welding process itself are represented using spring-thermo elasto-plastic bar model. As the contact model assumes nonuniform pressure distribution it is possible to include the effect of residual stresses that occur after the welding process. The validity of developed numerical model is demonstrated by comparing numerically and experimentally obtained eigenfrequencies and modes for three different stator packets that differ in geometry, position and the number of welds. UR - https://www.sv-jme.eu/sl/article/introducing-welds-into-the-dynamic-model-of-laminated-structures/
Ogrinec, Primož, Čepon, Gregor, AND Boltežar, Miha. "Introduction of Welds into the Dynamic Model of Laminated Structures" Strojniški vestnik - Journal of Mechanical Engineering [Online], Volume 64 Number 2 (26 June 2018)
Strojniški vestnik - Journal of Mechanical Engineering 64(2018)2, 73-81
© The Authors, CC-BY 4.0 Int. Change in copyright policy from 2022, Jan 1st.
Laminated structures, like an electric stator package, exhibit orthotropic behaviour and high levels of internal damping due to the inter-laminar friction forces. Modelling the complex geometry, number of laminae, spatial pressure distribution, and the effects of welds on the dynamic response of laminated structure remains a challenging issue. The presence of welds, that serve as a physical connection between laminae, results in non-uniform pressure distribution between laminae. Usually orthotropic material properties are proposed to account for lower stiffness in the sheet stacking direction. These models assume uniform distribution of friction forces and may even lead to occurrence of additional, unrealistic mode shapes. In this paper the dynamics model of the electric machine stator is proposed that employs a new contact formulation using beam elements, characterized by stiffness and damping parameters in the tangential direction and nonlinear contact stiffness in the normal contact direction. The welds and the welding process itself are represented using spring-thermo elasto-plastic bar model. As the contact model assumes nonuniform pressure distribution it is possible to include the effect of residual stresses that occur after the welding process. The validity of developed numerical model is demonstrated by comparing numerically and experimentally obtained eigenfrequencies and modes for three different stator packets that differ in geometry, position and the number of welds.