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Modelling Steel Behaviour

Anderberg, Yngve (1986) In LUTVDG/TVBB--3028--SE 3028.
Abstract
When modelling material mechanical behaviour, an analytical description is required of the relationship between stresses and strains. A computer oriented mechanical behaviour model for steel is described. The model is based on the fact that the deformation process at transient high temperature conditions can be desribed by three strain components which are separately found in different steady state tests. It is shown that a behaviour model based on steady state data satisfactorily predicts behaviour in transient tests under any given fire process. load and strain

history. The test method used for determining strength properties is of great importance for the obtained result. By using the model a procedure is shown how to couple... (More)
When modelling material mechanical behaviour, an analytical description is required of the relationship between stresses and strains. A computer oriented mechanical behaviour model for steel is described. The model is based on the fact that the deformation process at transient high temperature conditions can be desribed by three strain components which are separately found in different steady state tests. It is shown that a behaviour model based on steady state data satisfactorily predicts behaviour in transient tests under any given fire process. load and strain

history. The test method used for determining strength properties is of great importance for the obtained result. By using the model a procedure is shown how to couple steady state and transient state results and make them comparable for design. Sometimes the behaviour model for design purposes is simplified by using constructed stress-strain curves based on transient state results. This means that creep from the transient test is included in an approximate way in the stress-strain curves. The consequence of this simplification in a computation is illustrated for steel structures approaching creep failure under fire attack. (Less)
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author
publishing date
type
Book/Report
publication status
published
subject
in
LUTVDG/TVBB--3028--SE
volume
3028
pages
18 pages
publisher
Division of Building Fire Safety and Technology, Lund Institute of Technology
ISSN
0282-3756
language
English
LU publication?
no
id
a92c74e3-bf8e-4af5-a479-f1bf0f96e625 (old id 1267955)
date added to LUP
2008-11-17 15:00:21
date last changed
2016-06-29 09:18:38
@techreport{a92c74e3-bf8e-4af5-a479-f1bf0f96e625,
  abstract     = {When modelling material mechanical behaviour, an analytical description is required of the relationship between stresses and strains. A computer oriented mechanical behaviour model for steel is described. The model is based on the fact that the deformation process at transient high temperature conditions can be desribed by three strain components which are separately found in different steady state tests. It is shown that a behaviour model based on steady state data satisfactorily predicts behaviour in transient tests under any given fire process. load and strain<br/><br>
history. The test method used for determining strength properties is of great importance for the obtained result. By using the model a procedure is shown how to couple steady state and transient state results and make them comparable for design. Sometimes the behaviour model for design purposes is simplified by using constructed stress-strain curves based on transient state results. This means that creep from the transient test is included in an approximate way in the stress-strain curves. The consequence of this simplification in a computation is illustrated for steel structures approaching creep failure under fire attack.},
  author       = {Anderberg, Yngve},
  institution  = {Division of Building Fire Safety and Technology, Lund Institute of Technology},
  issn         = {0282-3756},
  language     = {eng},
  pages        = {18},
  series       = {LUTVDG/TVBB--3028--SE},
  title        = {Modelling Steel Behaviour},
  volume       = {3028},
  year         = {1986},
}