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Professor Paulus Pieter Bijlaard (1898 – 1967)

In memory of Professor Bijlaard by Nephi A. Christensen, Solomon C. Hollister and Edmunt T. Cranch:

Professor Bijlaard was a civil engineer with an international reputation in such diverse fields as civil, mechanical, and aeronautical engineering; theoretical and applied mechanics; and geophysics. His original writings are in Dutch, German, French, and English. They deal with practical problems in structural engineering, analytical and experimental research in plasticity and elastic stability, and research in the formation of folds in the earth’s crust. He left more than a hundred papers covering his work in the Netherlands, East India, and the United States. He was a pioneer in the basic theory of plasticity.

Paul Bijlaard was born in Rockanje Province, Holland, December 2, 1898, and was graduated as a civil engineer from the Technical University, Delft, in 1920. During the next eight years he was a bridge engineer for the Netherlands East Indies State Railways, working on the design of bridges and other important structures. In 1928 he was appointed Professor of Bridge and Structural Engineering at the Technical University at Bandoeng, Java, a position he held until 1947. During that period he served as consultant on many steel and concrete bridges for railway and highway use, and on large dry docks and other structures for a naval base. He also investigated the plastic behavior of steel and pioneered in the theory of plasticity and its use in geophysics and in structural design. In 1936 and again in 1946 he served the University as Rector Magnificus. (more in Prof. P.P. Bijlaard)

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