Abstract: The paper presents a selected example of investigations, carried out by the author, on complex thin-walled structures [3] that were designed based on the method of statically admissible discontinuous stress fields (the SADSF method, [1,2,4,5]) with the condition of equalized effort in the limit state. The SADSF method is substantiated based on the conclusions that follow on the lower bound theorem of limit analysis, and is an approximate method.
The aim of the investigations was practical verification of solutions of the SADSF method in elasto-plastic and elastic range of stress, because these ranges are not taken into account in the method.
The existing application software of the SADSF method allows one to design very complex thin-walled structures which are free of cardinal errors. Moreover, the method can be easily used by practically any engineer.
B I B L I O G R A F I A[1]. W. Bodaszewski: Statical analyses and shaping complex thin-walled structures [in Polish], Wydawnictwo BEL Studio, Warszawa 2013.
[2]. W. Bodaszewski, W. Szczepiński: Shaping Structure Elements by the Method of Discontinuous Stress Fields [in Polish], PWN/BEL Studio, Warszawa 2005/2006.
[3]. I. Markiewicz: Investigating the behaviour of structures designed with the SADSF method [in Polish], MONOGRAFIE, STUDIA, ROZPRAWY M47, Wydawnictwo Politechniki Świętokrzyskiej, Kielce 2013.
[4]. W. Szczepiński: Plastic design of machine parts [in Polish], PWN Warszawa, 1968.
[5]. Information on www.sadsf.net. 