Becker, Wilfried ; Gross, D. ; Schönfeld, V. (1996)
Closed-form analysis of the temperature-induced bending deformations of parabolic sandwich reflectors.
In: Zeitschrift für Flugwissenschaften und Weltraumforschung = ZFW, 20 (4)
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
Due to the thermal expansion of the sandwich core in the thickness direction curved sandwich reflectors exhibit a bending deformation under temperature loads. This leads to some deviation of the reflector surface from its initially ideal contour and subsequently to a degraded figuring behaviour. For the description of this effect a closed-form analysis is presented for an initially parabolic reflector approximating its deformations by those of an associated spherical shell. Finally, as a measure of contour accuracy, the resultant root mean square (RMS-) value with respect to a best-fit paraboloid is calculated. The derived results are particularly valuable for early design estimates and for parameter studies.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 1996 |
| Autor(en): | Becker, Wilfried ; Gross, D. ; Schönfeld, V. |
| Art des Eintrags: | Bibliographie |
| Titel: | Closed-form analysis of the temperature-induced bending deformations of parabolic sandwich reflectors |
| Sprache: | Englisch |
| Publikationsjahr: | 1996 |
| Ort: | Heidelberg |
| Verlag: | Springer |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Zeitschrift für Flugwissenschaften und Weltraumforschung = ZFW |
| Jahrgang/Volume einer Zeitschrift: | 20 |
| (Heft-)Nummer: | 4 |
| Kurzbeschreibung (Abstract): | Due to the thermal expansion of the sandwich core in the thickness direction curved sandwich reflectors exhibit a bending deformation under temperature loads. This leads to some deviation of the reflector surface from its initially ideal contour and subsequently to a degraded figuring behaviour. For the description of this effect a closed-form analysis is presented for an initially parabolic reflector approximating its deformations by those of an associated spherical shell. Finally, as a measure of contour accuracy, the resultant root mean square (RMS-) value with respect to a best-fit paraboloid is calculated. The derived results are particularly valuable for early design estimates and for parameter studies. |
| Fachbereich(e)/-gebiet(e): | Studienbereiche 16 Fachbereich Maschinenbau 16 Fachbereich Maschinenbau > Fachgebiet für Strukturmechanik (FSM) Studienbereiche > Studienbereich Mechanik |
| Hinterlegungsdatum: | 19 Nov 2008 15:59 |
| Letzte Änderung: | 28 Nov 2023 15:52 |
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