38 research outputs found
Form-finding of shell and membrane structures
Get PDFThis paper deals with the form-finding process of building constructions, such as membrane, shell or cable structures. This task is an essential step in the design process of membrane or cable structures, while for shell or beam structures, it is an optional case how to prefer the axial behavior of the intended construction. As a result of the form-finding process for structures acting exclusively in tension or compression, one unique shape in equilibrium is calculated for such a requirement. In the case of combined structures, cases with more than one solution for the same form-finding definition may occur. If the form-finding process is defined as a continuum mechanics process of the energy extreme calculation, the resulting shapes can reach both stable and unstable equilibrium positions. This contribution will focus on the general behavior of the process mentioned above, particular statements will be accompanied by examples
Zur Kenntnis der Wirkung der Düngung mit Kalisalzen auf die Stärkegehalte der Kartoffelknollen
No full textUntersuchungen über die Ernährungsverhältnisse des Waldes. III Wuchsleistung und Nährstoffaufnahme junger Holzpflanzen (Lärche, Kiefer, Fichte, Buche) in Abhängigkeit von Bodenreaktion und Düngung
No full textForm-finding of shell and membrane structures
No full textThis paper deals with the form-finding process of building constructions, such as membrane, shell or cable structures. This task is an essential step in the design process of membrane or cable structures, while for shell or beam structures, it is an optional case how to prefer the axial behavior of the intended construction. As a result of the form-finding process for structures acting exclusively in tension or compression, one unique shape in equilibrium is calculated for such a requirement. In the case of combined structures, cases with more than one solution for the same form-finding definition may occur. If the form-finding process is defined as a continuum mechanics process of the energy extreme calculation, the resulting shapes can reach both stable and unstable equilibrium positions. This contribution will focus on the general behavior of the process mentioned above, particular statements will be accompanied by examples
Untersuchungen über den Einfluß der Stickstoffdüngung auf das Wachstum der Fichte in Waldbaumschulen.
No full textÜber die Wirkung chlorhaltiger Kalisalze auf das Wachstum von verschiedenen Holzarten im Gefäßversuch
No full textÜber die kolorimetrischen Schnellmethoden zur Bestimmung des Phosphorsäuremangels in Ackerböden
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