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Author(s):	Kurrer, K.
Title:
Abstract:	Konrad Zuse verallgemeinerte das 1934 mit seiner Studienarbeit am Beispiel der statisch unbestimmten Analyse entwickelte programmförmige Rechenschemata 1936 zum “Verfahren des Rechenplanes oder Programms” (Konrad Zuse). Von 1936 bis 1941 entfaltete er dieses Verfahren in erster Linie für die Bau- und Flugzeugstatik. Diese numerischen Rechenpläne bildeten eine wesentliche Seite der historisch-logischen Entwicklung von Zuses programmgesteuerten Rechenautomaten Z1 (1938) und Z3 (1941). Mit den numerischen Rechenplänen ist auch die erste Stufe der Initialphase der Computerstatik benannt. Ihre zweite Stufe hebt mit Zuses Plankalkül an (1942 - 1949) - der ersten “Plattform für Softwareentwicklung” (Peter Jan Pahl ) - in dessen Zentrum sein allgemeines Konzept des Rechnens steht, das Zuse aus dem Kalkül-Begriff der Mathematik entwickelt und das Zahlenrechnen als Sonderfall enthält. Die beiden Stufen werden im Folgenden eingehend dargestellt und durch eine exemplarische Skizze der um 1950 einsetzenden Konstituierungsphase der Computerstatik abgerundet. Konrad Zuse and the theory of structures - on the formation of computational mechanics (part 2). It was in 1936 that Konrad Zuse generalised the program-type calculation scheme, which he had developed in his student project of 1934 using the example of the statically indeterminate analysis, to form the ”computing plan or program method” (Konrad Zuse). Between 1936 and 1941 he continued to develop this method, in the first place for structural and aviation engineering. These numerical computing plans formed one fundamental element in the historico-logical evolution of Zuse’s program-controlled automatic computers Z1 (1938) and Z3 (1941). The numerical computing plans also mark the first step in the initial phase of computational mechanics. The second step (1942 - 1949) began with Zuse’s ”Plankalkül” (Calculus of Programs) - the first ”software development platform” (Peter Jan Pahl) - , the heart of which is his general calculation concept, which Zuse developed from the formal system concept of mathematics and which contains numerical computation as a special case. Both of these steps are presented in detail below and rounded off with an illustrative outline of the constitution phase of computational mechanics which began around 1950.
Source:	Bautechnik 87 (2010), No. 12
Page/s:	763-783
Language of Publication:	German

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