Refine
Year of publication
Institute
- Fachbereich Luft- und Raumfahrttechnik (300) (remove)
Language
- German (300) (remove)
Document Type
- Article (125)
- Book (92)
- Conference Proceeding (25)
- Part of a Book (17)
- Patent (17)
- Report (13)
- Doctoral Thesis (5)
- Contribution to a Periodical (1)
- Diploma Thesis (1)
- Lecture (1)
Keywords
- Karosseriebau (6)
- Strömungsmaschine (6)
- Turbine (6)
- car body construction (4)
- Strömungsausgleich (3)
- Kraftfahrzeugbau (2)
- Leichtbau (2)
- Spaltentlastung (2)
- Sportwagen (2)
- Studentenprojekt (2)
- Virtuelle Fahrzeugentwicklung (2)
- Direkteinblasung (1)
- Epistemische Neugier (1)
- Karosserieleichtbau (1)
- Karosserietechnik (1)
- Ladungswechsel (1)
- Leichtbauwerkstoffe (1)
- Lightweight car body construction (1)
- Materialmischbauweise (1)
- Selbstwirksamkeit (1)
- Spaltentlasung (1)
- Stahlblech-Leichtmetall Verbundguss (1)
- Stahlblech-Leichtmetall-Hybride (1)
- Strömungssonde (1)
- Verbrennungsmotor (1)
- Verbundguss (1)
- Wasserstoff (1)
- intrinsische Motivation (1)
- vollvariabler Ventilbetrieb (1)
Elektromagnetischer Aktuator zur Betätigung eines Stellgliedes (2), mit wenigstens einem Elektromagneten (4) und einem mit dem Stellglied (2) verbundenen Anker (3), der gegen die Kraft einer Rückstellfeder (6) aus seiner Ruhelage in Richtung auf den Elektromagneten (4) bewegbar ist, mit einer Rückstellfeder (6), die eine nicht lineare, bezogen auf die Ruhelage des Ankers (3) progressiv ansteigende Kennlinie aufweist.
When exploring glacier ice it is often necessary to take samples or implement sensors at a certain depth underneath the glacier surface. One way of doing this is by using heated melting probes. In their common form these devices experience a straight one-dimensional downwards motion and can be modeled by standard close-contact melting theory. A recently developed melting probe however, the IceMole, achieves maneuverability by simultaneously applying a surface temperature gradient to induce a change in melting direction and controlling the effective contact-force by means of an ice screw to stabilize its change in attitude. A modeling framework for forced curvilinear melting does not exist so far and will be the content of this paper. At first, we will extend the existing theory for quasi-stationary close-contact melting to curved trajectories. We do this by introducing a rotational mode. This additional unknown in the system implies yet the need for another model closure. Within this new framework we will focus on the effect of a variable contact-force as well as different surface temperature profiles. In order to solve for melting velocity and curvature of the melting path we present both an inverse solution strategy for the analytical model, and a more general finite element framework implemented into the open source software package ELMER. Model results are discussed and compared to experimental data conducted in laboratory tests.