Search Results

1 - 10 of 639 items :

  • structural steel x
Clear All
Structural Failures of Buildings Caused by Volume Changes of Steel Slag

Structural Failures of Buildings Caused by Volume Changes of Steel Slag

The paper deals with structural failures of buildings caused by volume changes of steel slag in subsoil of hospital in Ostrava-Poruba. The building consists of a monolithic reinforced concrete frame structure with floor slabs on slag sub-base. Latest measured increases in deformations show that the slag swelling in the sub-soil continues, and as the measured dependences show, there is no stabilization of the movement.

Open access
Numerical Model of Plastic Destruction of Thick Steel Structural Elements

Abstract

In the shipbuilding industry, the risk of brittle fracture of the structure is limited by using certified materials with specified impact strength, determined by the Charpy method (for a given design temperature) and by supervising the welding processes (technology qualification, production supervision, non-destructive testing). For off-shore constructions, classical shipbuilding requirements may not be sufficient. Therefore, the regulations used in the construction of offshore structures require CTOD tests for steel and welded joints with a thickness greater than 40 mm in the case of high strength steel and more than 50 mm in the case of other steels. Classification societies do not accept CTOD test results of samples with a thickness less than the material tested. For this reason, the problem of theoretical modeling of steel structure destruction process is a key issue, because laboratory tests for elements with high thickness (in the order of 100 mm and more) with a notch are expensive (large samples, difficulties in notching), and often create implementation difficulties due to required high load and range of recorded parameters. The publication will show results and conclusions from numerical modeling of elastic properties for steel typical for offshore applications.

Calculations were carried out at the Academic Computer Centre in Gdańsk.

Open access
Problems of Collisions Between Adjacent Steel Structures under Earthquake Excitation / Problemy Zderzeń Pomiędzy Sąsiadującymi Konstrukcjami Stalowymi Poddanymi Obciążeniom Sejsmicznym

References 1. Anagnostopoulos S.A.: Pounding of buildings in series during earthquakes, Earthquake Engineering and Structural Dynamics, 16 (1988) 443-456. 2. Anagnostopoulos S.A., Spiliopoulus K.V.: An investigation of earthquake induced pounding between adjacent building, Earthquake Engineering and Structural Dynamics, 21 (1992) 289-302. 3. Chau K.T., Wei X.X., Guo X., Shen C.Y.: Experimental and theoretical simulations of seismic poundings between two adjacent structures, Earthquake Engineering and Structural

Open access
Assessing The Stregth And Weldability Of Historic Structural Steel

REFERENCES 1. Blicharski M.: Inżynieria materiałowa. Stal. Wydanie II zmienione i rozszerzone , Warszawa, WNT 2012. 2. Butnicki S.: Spawalnosć i kruchość stali , Warszawa, WNTechniczne 1991. 3. Czapliński K.: Dawne wyroby ze stopów żelaza , Wrocław, DWE 2009. 4. Dudkiewicz J., Gosowski B.: Generalizations of relations between strength and hardness of steel in structural elements under longitudinal load , Archives of Civil Engineering, (2004), 50, 1, 45-67. 5. Gosowski B., Kubica E.: Badania laboratoryjne konstrukcji metalowych

Open access
Sintered Structural Steels Containing Mn, Cr And Mo – The Summary of the Investigations

., vol. 1, 2007, no, 52, p. 97 [42] Sulowski, M.: Arch. Metall. Mater., vol. 52, 2007, no. 4, p. 617 [43] Sułowski, M., Faryj, K.: Arch. Metall. Mater., vol. 54, 2009, no. 1, p. 121 [44] Ciaś, A., Sułowski, M.: Arch. Metall. Mater., vol. 54, 2009, no. 4, p. 1093 [45] Ciaś, A.: Development and Properties of Fe-Mn-(Mo)-(Cr)-C Sintered Structural Steels. Krakow : AGH - Uczelniane Wydawnictwa Naukowo-Dydaktyczne, 2004 [46] Sułowski, M., Ciaś, A.: Arch. Metall. Mater., vol. 56, 2011, no. 2, p

Open access
Structural Transformations During Tempering in the Steels with High Content of Mo and Co

. [10] F.V. Anghelina, D.N. Ungureanu, V. Bratu, I.N Popescu, C.O. Rusanescu, Fine structure analysis of biocompatible ceramic materials based hydroxyapatite and metallic biomaterials 316L, Applied Surface Science 285 A, 65-71. [11] B.A. Olei, I. Ştefan, N. Popescu, The Influence of the Sintering Temperature on the Wear Testing for Some Steels Samples Obtained by Powder Metallurgy, Solid State Phenomena 216, 216-221. [12] I.N. Popescu, D. Bojin, I. Carceanu, G. Novac, F.V. Anghelina, Morphological and structural aspects using electronic

Open access
The Least Squares Stochastic Finite Element Method in Structural Stability Analysis of Steel Skeletal Structures

reliability of steel frames. - Journal of Structural Safety, vol.25, pp.123-138. Kamiński M. (2013): The Stochastic Perturbation Method for Computational Mechanics. - Chichester: Wiley. Kamiński M. and Solecka M. (2013). Optimization of the aluminium and steel telecommunication towers using the generalized perturbation-based Stochastic Finite Element Method. - Journal of Finite Elements Analysis and Design, vol.63, No.1, pp.69-79. Kamiński M. and Strąkowski M. (2013): On the least squares stochastic finite element analysis of

Open access
Structural Efficiency Of Cold-Formed Steel Purlins

References [1] American Iron and Steel Institute, Specification for the design of cold-formed steel structural members , USA, 1997. [2] European Committee for Standardization, Eurocode 3: design of steel structures: Part 1.3, EN 1993-1-3, 2006. [3] K.F. Chung, Analysis and design of lapped connections between cold-formed steel Z sections , Elsevier / Thin-walled structures 43, March 2005, pp. 1071-1090 [4] D. Dubină, V. Ungureanu, Design of cold-formed steel structures , Lindab Collection, Bucharest, 2004.

Open access
A Fully Coupled Thermal-Structural Finite Element Analysis of a Low-Carbon Steel Bar Using an Improved Material Model For Ductile-to-Brittle Transition at High Strain Rates

-Free Galerkin simulations of dynamic shear band propagation and failure mode transition , Int. J. Solids Struct., Vol. 39, 1213-1240, 2002. DE SOUZA NETO, E. A., PERIĆ, D. and OWEN, D. R.J, Computational methods for Plasticity , John Wiley & Sons Ltd., 2008. ÉCSI, L. and ÉLESZTŐS, P.: Constitutive equation with internal damping for materials under cyclic and dynamic loadings using a fully coupled thermal-structural finite element analysis , Int. J. Multiphysics, Vol. 3(2), 155-165, 2009. ÉCSI L

Open access
Mathematical Modelling Of The Bridges Structural Monitoring I

8. REFERENCES Ajiboye O., 2010, Sensor Computation and Communication for Remote Structural Monitoring, http://etd.library.vanderbilt.edu/available/etd-05272009-111310/unrestricted/OlabodeAjiboyeRevised.pdf . Chang, F.K., et all, 1999, Structural Health Monitoring, Proceedings of the 2 nd International Workshop on Structural Health Monitoring, Stanford, CA, USA . Dong Y., 2010, Bridges Structural Health Monitoring and Deterioration Detection, Synthesis of Knowledge and Technology, Alaska University Transportation Center, Fairbanks, AK 99775

Open access