Journal of Theoretical
and Applied Mechanics

57, 1, pp. 115-126, Warsaw 2019
DOI: 10.15632/jtam-pl.57.1.115

Design with sadsf method and analyses of elastic properties of torsion-loaded structures based on double-tee sections

Ireneusz Markiewicz
The paper presents results of the preliminary strength design using the method of statically
admissible discontinuous stress fields (SADSF) of two new and interesting thin-walled
structures based on double-tee sections. Although these constructions are intended to carry
torsion moment loads, all their surfaces are accessible from outside. The paper is completed
with the selected results of linearly-elastic FEM analyses of the presented solutions. They
show surprisingly good strength properties and significantly higher load-carrying capacity
comparing to structures designed in an intuitive way. The objectives of the paper, among
other things, are as follows: popularization of the SADSF method, presentation of its new
solutions and confirmation of practical usefulness in the design of thin-walled structures.
Keywords: thin-walled structures, design, limit analysis, shape and topology optimization, SADSF method


Bendsoe M.P., Sigmund O., 2003, Topology Optimization: Theory, Methods, and Applications,


Bodaszewski W., 1994, The investigation of the models of structural joint shells shaped from the

condition of equalized effort in limit state (in Polish), XVI Sympozjum Mechaniki Eksperymentalnej

Ciała Stałego

Bodaszewski W., 2004, 2005, Algorithms of the method of statically admissible discontinuous

stress fields (SADSF), Engineering Transactions, 52, 3, 175-193, 2004, 52, 4, 281-302, 2004, 53, 1, 15-30, 2005, 53, 2, 119-131, 2005

Bodaszewski W., 2013, Statical Analyses and Shaping of Complex Thin-Walled Structures (in

Polish), BEL Studio, Warszawa

Bodaszewski W., Szczepiński W., 2005, Shaping Structure Elements by the Method of Discontinuous

Stress Fields (in Polish), BEL Studio, PWN, Warszawa

Dietrich L., Miastkowski J., Szczepiński W., 1970, Load-Carrying Capacity of Structural

Elements (in Polish), PWN, Warszawa

Frąckiewicz H., Szczepiński W., Tereszkowski Z., Szlagowski J., Bodaszewski W.,

Trela S., Barchan A., 1985, Joints and Structural Connections (in Polish), WNT, Warszawa

Huang X., Xie Y.M., 2010, Evolutionary Topology Optimization of Continuum Structures, Methods

and Applications, Willey

Kapkowski J., Stupnicki J., 1973, Experimental investigations of machine elements designed

by the method of load carrying capacity (in Polish), Rozprawy Inżynierskie, 21, 161-173

Markiewicz I., 2007, Analysis of elastic effort fields in truck frame designed by the SADSF

method, Eksploatacja i Niezawodność – Maintenance and Reliability, 2, 34, 22-27

Markiewicz I., 2013, Investigating the Behaviour of Structures Designed with the SADSF Method

(in Polish), Monografie, Studia, Rozprawy M47, Wydawnictwo Politechniki Świętokrzyskiej, Kielce

Mróz Z., Bojczuk D., 2003, Finite topology variations in optimal design of structures, Structural

and Multidisciplinary Optimization, 25, 3, 153-173

Szczepiński W., 1968, Plastic Design of Machine Parts (in Polish), PWN, Warszawa

Szczepiński W., Szlagowski J., 1990, Plastic Design of Complex Shape Structures, Ellis Horwood

& PWN, Warszawa-Chichester

Szlagowski J., 1990, Methodology of strength design of structural elements according to the limit

load carrying capacity criterion (in Polish), IFTR Reports, 25

Zowczak W., 2004, Strength Design by Means of Slip-Line Method (in Polish),Monografie, Studia,

Rozprawy M-41, Wydawnictwo Politechniki Świętokrzyskiej, Kielce