The Boundary-Element Method in Acoustics – an Example of Evaluating the Sound Field of a DC Electric Motor

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FURLAN, Martin ;BOLTEŽAR, Miha .
The Boundary-Element Method in Acoustics – an Example of Evaluating the Sound Field of a DC Electric Motor. 
Strojniški vestnik - Journal of Mechanical Engineering, [S.l.], v. 50, n.2, p. 115-128, july 2017. 
ISSN 0039-2480.
Available at: <https://www.sv-jme.eu/article/the-boundary-element-method-in-acoustics-an-example-of-evaluating-the-sound-field-of-a-dc-electric-motor/>. Date accessed: 08 mar. 2021. 
doi:http://dx.doi.org/.
Furlan, M., & Boltežar, M.
(2004).
The Boundary-Element Method in Acoustics – an Example of Evaluating the Sound Field of a DC Electric Motor.
Strojniški vestnik - Journal of Mechanical Engineering, 50(2), 115-128.
doi:http://dx.doi.org/
@article{.,
	author = {Martin  Furlan and Miha  Boltežar},
	title = {The Boundary-Element Method in Acoustics – an Example of Evaluating the Sound Field of a DC Electric Motor},
	journal = {Strojniški vestnik - Journal of Mechanical Engineering},
	volume = {50},
	number = {2},
	year = {2004},
	keywords = {acoustics; boundary-element method; noise; structural dynamics; },
	abstract = {This paper presents a basic approach to solving exterior acoustic problems using the boundaryelement method (BEM) and the development of a BEM program for solving three-dimensional (3D) problems. It also shows the integration of the developed BEM program into a finite-element method (FEM) program, which is primarily used to evaluate the structural response that generates a sound field, but can also be used to pre-process and post-process the acoustic model. The program was verified by using an acoustic problem for which the analytical solution was already known. The verification was performed by researching the influence of the discretization density on the accuracy of the numerically defined sound field. In addition to this, we also evaluated the time necessary to solve the problem and its system of linear equations, and related it to the method chosen for solving this system of linear equations. The program was applied to a real case where the sound field of a DC electric motor was calculated using the BEM. Based on the structural response of the DC electric motor that is the result of the harmonic excitation of magnetic forces, and was calculated with the FEM, we evaluated the sound field surrounding the DC electric motor.},
	issn = {0039-2480},	pages = {115-128},	doi = {},
	url = {https://www.sv-jme.eu/article/the-boundary-element-method-in-acoustics-an-example-of-evaluating-the-sound-field-of-a-dc-electric-motor/}
}
Furlan, M.,Boltežar, M.
2004 July 50. The Boundary-Element Method in Acoustics – an Example of Evaluating the Sound Field of a DC Electric Motor. Strojniški vestnik - Journal of Mechanical Engineering. [Online] 50:2
%A Furlan, Martin 
%A Boltežar, Miha 
%D 2004
%T The Boundary-Element Method in Acoustics – an Example of Evaluating the Sound Field of a DC Electric Motor
%B 2004
%9 acoustics; boundary-element method; noise; structural dynamics; 
%! The Boundary-Element Method in Acoustics – an Example of Evaluating the Sound Field of a DC Electric Motor
%K acoustics; boundary-element method; noise; structural dynamics; 
%X This paper presents a basic approach to solving exterior acoustic problems using the boundaryelement method (BEM) and the development of a BEM program for solving three-dimensional (3D) problems. It also shows the integration of the developed BEM program into a finite-element method (FEM) program, which is primarily used to evaluate the structural response that generates a sound field, but can also be used to pre-process and post-process the acoustic model. The program was verified by using an acoustic problem for which the analytical solution was already known. The verification was performed by researching the influence of the discretization density on the accuracy of the numerically defined sound field. In addition to this, we also evaluated the time necessary to solve the problem and its system of linear equations, and related it to the method chosen for solving this system of linear equations. The program was applied to a real case where the sound field of a DC electric motor was calculated using the BEM. Based on the structural response of the DC electric motor that is the result of the harmonic excitation of magnetic forces, and was calculated with the FEM, we evaluated the sound field surrounding the DC electric motor.
%U https://www.sv-jme.eu/article/the-boundary-element-method-in-acoustics-an-example-of-evaluating-the-sound-field-of-a-dc-electric-motor/
%0 Journal Article
%R 
%& 115
%P 14
%J Strojniški vestnik - Journal of Mechanical Engineering
%V 50
%N 2
%@ 0039-2480
%8 2017-07-07
%7 2017-07-07
Furlan, Martin, & Miha  Boltežar.
"The Boundary-Element Method in Acoustics – an Example of Evaluating the Sound Field of a DC Electric Motor." Strojniški vestnik - Journal of Mechanical Engineering [Online], 50.2 (2004): 115-128. Web.  08 Mar. 2021
TY  - JOUR
AU  - Furlan, Martin 
AU  - Boltežar, Miha 
PY  - 2004
TI  - The Boundary-Element Method in Acoustics – an Example of Evaluating the Sound Field of a DC Electric Motor
JF  - Strojniški vestnik - Journal of Mechanical Engineering
DO  - 
KW  - acoustics; boundary-element method; noise; structural dynamics; 
N2  - This paper presents a basic approach to solving exterior acoustic problems using the boundaryelement method (BEM) and the development of a BEM program for solving three-dimensional (3D) problems. It also shows the integration of the developed BEM program into a finite-element method (FEM) program, which is primarily used to evaluate the structural response that generates a sound field, but can also be used to pre-process and post-process the acoustic model. The program was verified by using an acoustic problem for which the analytical solution was already known. The verification was performed by researching the influence of the discretization density on the accuracy of the numerically defined sound field. In addition to this, we also evaluated the time necessary to solve the problem and its system of linear equations, and related it to the method chosen for solving this system of linear equations. The program was applied to a real case where the sound field of a DC electric motor was calculated using the BEM. Based on the structural response of the DC electric motor that is the result of the harmonic excitation of magnetic forces, and was calculated with the FEM, we evaluated the sound field surrounding the DC electric motor.
UR  - https://www.sv-jme.eu/article/the-boundary-element-method-in-acoustics-an-example-of-evaluating-the-sound-field-of-a-dc-electric-motor/
@article{{}{.},
	author = {Furlan, M., Boltežar, M.},
	title = {The Boundary-Element Method in Acoustics – an Example of Evaluating the Sound Field of a DC Electric Motor},
	journal = {Strojniški vestnik - Journal of Mechanical Engineering},
	volume = {50},
	number = {2},
	year = {2004},
	doi = {},
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TY  - JOUR
AU  - Furlan, Martin 
AU  - Boltežar, Miha 
PY  - 2017/07/07
TI  - The Boundary-Element Method in Acoustics – an Example of Evaluating the Sound Field of a DC Electric Motor
JF  - Strojniški vestnik - Journal of Mechanical Engineering; Vol 50, No 2 (2004): Strojniški vestnik - Journal of Mechanical Engineering
DO  - 
KW  - acoustics, boundary-element method, noise, structural dynamics, 
N2  - This paper presents a basic approach to solving exterior acoustic problems using the boundaryelement method (BEM) and the development of a BEM program for solving three-dimensional (3D) problems. It also shows the integration of the developed BEM program into a finite-element method (FEM) program, which is primarily used to evaluate the structural response that generates a sound field, but can also be used to pre-process and post-process the acoustic model. The program was verified by using an acoustic problem for which the analytical solution was already known. The verification was performed by researching the influence of the discretization density on the accuracy of the numerically defined sound field. In addition to this, we also evaluated the time necessary to solve the problem and its system of linear equations, and related it to the method chosen for solving this system of linear equations. The program was applied to a real case where the sound field of a DC electric motor was calculated using the BEM. Based on the structural response of the DC electric motor that is the result of the harmonic excitation of magnetic forces, and was calculated with the FEM, we evaluated the sound field surrounding the DC electric motor.
UR  - https://www.sv-jme.eu/article/the-boundary-element-method-in-acoustics-an-example-of-evaluating-the-sound-field-of-a-dc-electric-motor/
Furlan, Martin, AND Boltežar, Miha.
"The Boundary-Element Method in Acoustics – an Example of Evaluating the Sound Field of a DC Electric Motor" Strojniški vestnik - Journal of Mechanical Engineering [Online], Volume 50 Number 2 (07 July 2017)

Authors

Affiliations

  • ISKRA Avtoelektirika d. d., Slovenia
  • University of Ljubljana, Faculty of Mechanical Engineering, Slovenia

Paper's information

Strojniški vestnik - Journal of Mechanical Engineering 50(2004)2, 115-128

This paper presents a basic approach to solving exterior acoustic problems using the boundaryelement method (BEM) and the development of a BEM program for solving three-dimensional (3D) problems. It also shows the integration of the developed BEM program into a finite-element method (FEM) program, which is primarily used to evaluate the structural response that generates a sound field, but can also be used to pre-process and post-process the acoustic model. The program was verified by using an acoustic problem for which the analytical solution was already known. The verification was performed by researching the influence of the discretization density on the accuracy of the numerically defined sound field. In addition to this, we also evaluated the time necessary to solve the problem and its system of linear equations, and related it to the method chosen for solving this system of linear equations. The program was applied to a real case where the sound field of a DC electric motor was calculated using the BEM. Based on the structural response of the DC electric motor that is the result of the harmonic excitation of magnetic forces, and was calculated with the FEM, we evaluated the sound field surrounding the DC electric motor.

acoustics; boundary-element method; noise; structural dynamics;