Harmonic Equivalence of the Impulse Loads in Vibration Fatigue

112 Views
107 Downloads
Export citation: ABNT
OGRINEC, Primož ;SLAVIČ, Janko ;BOLTEŽAR, Miha .
Harmonic Equivalence of the Impulse Loads in Vibration Fatigue. 
Strojniški vestnik - Journal of Mechanical Engineering, [S.l.], v. 65, n.11-12, p. 631-640, november 2019. 
ISSN 0039-2480.
Available at: <https://www.sv-jme.eu/article/harmonic-equivalence-of-the-impulse-loads-in-vibration-fatigue/>. Date accessed: 09 dec. 2019. 
doi:http://dx.doi.org/10.5545/sv-jme.2019.6197.
Ogrinec, P., Slavič, J., & Boltežar, M.
(2019).
Harmonic Equivalence of the Impulse Loads in Vibration Fatigue.
Strojniški vestnik - Journal of Mechanical Engineering, 65(11-12), 631-640.
doi:http://dx.doi.org/10.5545/sv-jme.2019.6197
@article{sv-jmesv-jme.2019.6197,
	author = {Primož  Ogrinec and Janko  Slavič and Miha  Boltežar},
	title = {Harmonic Equivalence of the Impulse Loads in Vibration Fatigue},
	journal = {Strojniški vestnik - Journal of Mechanical Engineering},
	volume = {65},
	number = {11-12},
	year = {2019},
	keywords = {vibration fatigue; random loads; spectral methods; fatigue life; stationary and non-stationary loading; non-Gaussian loading; vibration testing},
	abstract = {In vibration fatigue, three unique types of loads are typical: random, harmonic and impulse. In an application any of these loads are possible. A fatigue-life analysis is possible in the time and frequency domains using the frequency-response function of a structure. Recent studies demonstrated that the impulse loads influence the accuracy of a fatigue-life prediction in the frequency domain. The focus of this research is a theoretical study of an equivalent harmonic load to the impulse load on a single-degree-of-freedom system in order to investigate the feasibility of impulse loads in vibration testing. This research shows that there is a relationship between the impulse and harmonic loads that is related to the underlying dynamic properties (e.g., damping, natural frequency). Based on a theoretical analysis an experimental procedure was developed for both cases of excitation, which was able to confirm the theoretical analysis. Using the modal decomposition the single-degree-of-freedom approach can be generalized to multiple-degrees-of-freedom systems.},
	issn = {0039-2480},	pages = {631-640},	doi = {10.5545/sv-jme.2019.6197},
	url = {https://www.sv-jme.eu/article/harmonic-equivalence-of-the-impulse-loads-in-vibration-fatigue/}
}
Ogrinec, P.,Slavič, J.,Boltežar, M.
2019 November 65. Harmonic Equivalence of the Impulse Loads in Vibration Fatigue. Strojniški vestnik - Journal of Mechanical Engineering. [Online] 65:11-12
%A Ogrinec, Primož 
%A Slavič, Janko 
%A Boltežar, Miha 
%D 2019
%T Harmonic Equivalence of the Impulse Loads in Vibration Fatigue
%B 2019
%9 vibration fatigue; random loads; spectral methods; fatigue life; stationary and non-stationary loading; non-Gaussian loading; vibration testing
%! Harmonic Equivalence of the Impulse Loads in Vibration Fatigue
%K vibration fatigue; random loads; spectral methods; fatigue life; stationary and non-stationary loading; non-Gaussian loading; vibration testing
%X In vibration fatigue, three unique types of loads are typical: random, harmonic and impulse. In an application any of these loads are possible. A fatigue-life analysis is possible in the time and frequency domains using the frequency-response function of a structure. Recent studies demonstrated that the impulse loads influence the accuracy of a fatigue-life prediction in the frequency domain. The focus of this research is a theoretical study of an equivalent harmonic load to the impulse load on a single-degree-of-freedom system in order to investigate the feasibility of impulse loads in vibration testing. This research shows that there is a relationship between the impulse and harmonic loads that is related to the underlying dynamic properties (e.g., damping, natural frequency). Based on a theoretical analysis an experimental procedure was developed for both cases of excitation, which was able to confirm the theoretical analysis. Using the modal decomposition the single-degree-of-freedom approach can be generalized to multiple-degrees-of-freedom systems.
%U https://www.sv-jme.eu/article/harmonic-equivalence-of-the-impulse-loads-in-vibration-fatigue/
%0 Journal Article
%R 10.5545/sv-jme.2019.6197
%& 631
%P 10
%J Strojniški vestnik - Journal of Mechanical Engineering
%V 65
%N 11-12
%@ 0039-2480
%8 2019-11-19
%7 2019-11-19
Ogrinec, Primož, Janko  Slavič, & Miha  Boltežar.
"Harmonic Equivalence of the Impulse Loads in Vibration Fatigue." Strojniški vestnik - Journal of Mechanical Engineering [Online], 65.11-12 (2019): 631-640. Web.  09 Dec. 2019
TY  - JOUR
AU  - Ogrinec, Primož 
AU  - Slavič, Janko 
AU  - Boltežar, Miha 
PY  - 2019
TI  - Harmonic Equivalence of the Impulse Loads in Vibration Fatigue
JF  - Strojniški vestnik - Journal of Mechanical Engineering
DO  - 10.5545/sv-jme.2019.6197
KW  - vibration fatigue; random loads; spectral methods; fatigue life; stationary and non-stationary loading; non-Gaussian loading; vibration testing
N2  - In vibration fatigue, three unique types of loads are typical: random, harmonic and impulse. In an application any of these loads are possible. A fatigue-life analysis is possible in the time and frequency domains using the frequency-response function of a structure. Recent studies demonstrated that the impulse loads influence the accuracy of a fatigue-life prediction in the frequency domain. The focus of this research is a theoretical study of an equivalent harmonic load to the impulse load on a single-degree-of-freedom system in order to investigate the feasibility of impulse loads in vibration testing. This research shows that there is a relationship between the impulse and harmonic loads that is related to the underlying dynamic properties (e.g., damping, natural frequency). Based on a theoretical analysis an experimental procedure was developed for both cases of excitation, which was able to confirm the theoretical analysis. Using the modal decomposition the single-degree-of-freedom approach can be generalized to multiple-degrees-of-freedom systems.
UR  - https://www.sv-jme.eu/article/harmonic-equivalence-of-the-impulse-loads-in-vibration-fatigue/
@article{{sv-jme}{sv-jme.2019.6197},
	author = {Ogrinec, P., Slavič, J., Boltežar, M.},
	title = {Harmonic Equivalence of the Impulse Loads in Vibration Fatigue},
	journal = {Strojniški vestnik - Journal of Mechanical Engineering},
	volume = {65},
	number = {11-12},
	year = {2019},
	doi = {10.5545/sv-jme.2019.6197},
	url = {https://www.sv-jme.eu/article/harmonic-equivalence-of-the-impulse-loads-in-vibration-fatigue/}
}
TY  - JOUR
AU  - Ogrinec, Primož 
AU  - Slavič, Janko 
AU  - Boltežar, Miha 
PY  - 2019/11/19
TI  - Harmonic Equivalence of the Impulse Loads in Vibration Fatigue
JF  - Strojniški vestnik - Journal of Mechanical Engineering; Vol 65, No 11-12 (2019): Strojniški vestnik - Journal of Mechanical Engineering
DO  - 10.5545/sv-jme.2019.6197
KW  - vibration fatigue, random loads, spectral methods, fatigue life, stationary and non-stationary loading, non-Gaussian loading, vibration testing
N2  - In vibration fatigue, three unique types of loads are typical: random, harmonic and impulse. In an application any of these loads are possible. A fatigue-life analysis is possible in the time and frequency domains using the frequency-response function of a structure. Recent studies demonstrated that the impulse loads influence the accuracy of a fatigue-life prediction in the frequency domain. The focus of this research is a theoretical study of an equivalent harmonic load to the impulse load on a single-degree-of-freedom system in order to investigate the feasibility of impulse loads in vibration testing. This research shows that there is a relationship between the impulse and harmonic loads that is related to the underlying dynamic properties (e.g., damping, natural frequency). Based on a theoretical analysis an experimental procedure was developed for both cases of excitation, which was able to confirm the theoretical analysis. Using the modal decomposition the single-degree-of-freedom approach can be generalized to multiple-degrees-of-freedom systems.
UR  - https://www.sv-jme.eu/article/harmonic-equivalence-of-the-impulse-loads-in-vibration-fatigue/
Ogrinec, Primož, Slavič, Janko, AND Boltežar, Miha.
"Harmonic Equivalence of the Impulse Loads in Vibration Fatigue" Strojniški vestnik - Journal of Mechanical Engineering [Online], Volume 65 Number 11-12 (19 November 2019)

Authors

Affiliations

  • University of Ljubljana, Faculty of Mechanical Engineering, Slovenia 1

Paper's information

Strojniški vestnik - Journal of Mechanical Engineering 65(2019)11-12, 631-640

https://doi.org/10.5545/sv-jme.2019.6197

In vibration fatigue, three unique types of loads are typical: random, harmonic and impulse. In an application any of these loads are possible. A fatigue-life analysis is possible in the time and frequency domains using the frequency-response function of a structure. Recent studies demonstrated that the impulse loads influence the accuracy of a fatigue-life prediction in the frequency domain. The focus of this research is a theoretical study of an equivalent harmonic load to the impulse load on a single-degree-of-freedom system in order to investigate the feasibility of impulse loads in vibration testing. This research shows that there is a relationship between the impulse and harmonic loads that is related to the underlying dynamic properties (e.g., damping, natural frequency). Based on a theoretical analysis an experimental procedure was developed for both cases of excitation, which was able to confirm the theoretical analysis. Using the modal decomposition the single-degree-of-freedom approach can be generalized to multiple-degrees-of-freedom systems.

vibration fatigue; random loads; spectral methods; fatigue life; stationary and non-stationary loading; non-Gaussian loading; vibration testing