A novel excitation method for pyroshock simulation

Houshmand, Behnam; Lacher, Alexander; Juengel, Níkolas; Prasol, Lukas; Wagner, Utz von; Uhlmann, Eckart

A novel excitation method for pyroshock simulation

dc.contributor.author	Houshmand, Behnam
dc.contributor.author	Lacher, Alexander
dc.contributor.author	Juengel, Níkolas
dc.contributor.author	Prasol, Lukas
dc.contributor.author	Wagner, Utz von
dc.contributor.author	Uhlmann, Eckart
dc.date.accessioned	2017-10-23T09:31:43Z
dc.date.available	2017-10-23T09:31:43Z
dc.date.issued	2016
dc.description	Dieser Beitrag ist mit Zustimmung des Rechteinhabers aufgrund einer (DFG geförderten) Allianz- bzw. Nationallizenz frei zugänglich.	de
dc.description	This publication is with permission of the rights owner freely accessible due to an Alliance licence and a national licence (funded by the DFG, German Research Foundation) respectively.	en
dc.description.abstract	Pyroshocks are structural responses to transient excitation caused by the essential use of pyrotechnic devices in aerospace applications. In order to avoid damage in aerospace structures due to pyroshocks, tests are performed on earth prior to launching space modules. In these tests, explosive loads are often replaced by alternative excitation methods such as hammer pendulums or shakers simulating on earth the impact taking place in space. However, there does not yet exist an adequate excitation method satisfying all requirements of a fast, reliable, predictable and repeatable test setup. Whereas hammers are poorely controllable in terms of generating desired shock spectra, shakers show limitations in terms of the bandwidths of up to 10 kHz which are prescribed in the test specifications. The authors present a novel contactless and non-destructive excitation method for pyroshock test devices based on a mechatronic coupling by applying Lorentz forces to the carrying structure. For generating the corresponding magnetic field, the capacitor of a Resistor-Inductor-Capacitor RLC resonator circuit is initially charged and then discharged leading to high currents in the coil which is placed close to the carrying structure. Latter is then inducing a counter current in the aluminum structure which reacts with high multidirectional Lorentz forces. Any adjustments are done by tuning the properties of the circuit such as initial charge, capacitance and inductance. By connecting several different coils, frequency modulation and by splitting the currents more complex signals can be generated matching the natural frequencies of the structure. Almost all disadvantages of common excitation methods are eliminated by the proposed mechanism.	en
dc.identifier.eissn	1741-2986
dc.identifier.issn	1077-5463
dc.identifier.uri	https://depositonce.tu-berlin.de/handle/11303/6813
dc.identifier.uri	http://dx.doi.org/10.14279/depositonce-6197
dc.language.iso	en
dc.rights.uri	http://rightsstatements.org/vocab/InC/1.0/	en
dc.subject.ddc	530 Physik	de
dc.subject.other	pyroshock	en
dc.subject.other	simulation	en
dc.subject.other	excitation	en
dc.subject.other	wave propagation	en
dc.subject.other	SRS	en
dc.subject.other	magnetic field	en
dc.subject.other	Lorentz force	en
dc.subject.other	RLC resonator	en
dc.title	A novel excitation method for pyroshock simulation	en
dc.type	Article	en
dc.type.version	publishedVersion	en
dcterms.bibliographicCitation.doi	10.1177/1077546315573904
dcterms.bibliographicCitation.issue	20
dcterms.bibliographicCitation.journaltitle	Journal of vibration and control	en
dcterms.bibliographicCitation.originalpublishername	Sage Publications	de
dcterms.bibliographicCitation.originalpublisherplace	London [u.a.]	de
dcterms.bibliographicCitation.pageend	4258
dcterms.bibliographicCitation.pagestart	4247
dcterms.bibliographicCitation.volume	22
tub.accessrights.dnb	domain	*
tub.affiliation	Fak. 5 Verkehrs- und Maschinensysteme::Inst. Mechanik::FG Mechatronische Maschinendynamik	de
tub.affiliation	Fak. 5 Verkehrs- und Maschinensysteme::Inst. Werkzeugmaschinen und Fabrikbetrieb::FG Werkzeugmaschinen und Fertigungstechnik	de
tub.affiliation.faculty	Fak. 5 Verkehrs- und Maschinensysteme	de
tub.affiliation.faculty	Fak. 5 Verkehrs- und Maschinensysteme	de
tub.affiliation.group	FG Mechatronische Maschinendynamik	de
tub.affiliation.group	FG Werkzeugmaschinen und Fertigungstechnik	de
tub.affiliation.institute	Inst. Mechanik	de
tub.affiliation.institute	Inst. Werkzeugmaschinen und Fabrikbetrieb	de
tub.publisher.universityorinstitution	Technische Universität Berlin

Files

Original bundle

Now showing 1 - 1 of 1

Name:: 1077546315573904.pdf
Size:: 1 MB
Format:: Adobe Portable Document Format

Download

Collections

Publications