Optimal design of elastic plastic frames accounting for seismic protection devices

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15 Citazioni (Scopus)

Abstract

The optimal design of elastic perfectly plastic steel frames with or without suitable protection devices and subjected to static as well as seismic loadings is studied.Two minimum volume problem formulations are proposed, on the grounds of the so-called statical approach, accountingfor three different resistance limits: the purely elastic limit, the (elastic) shakedown limit and the instantaneouscollapse limit. The adopted load combinations are characterizedby the presence of fixed loads, of quasi-static perfect cyclic loads and dynamic (seismic) loads. The linear elastic effects of the dynamic actions are studied by utilizing a modal technique. The proposed treatment is referred to the most recent Italian code related to the structural analysis anddesign. The solution of the optimization problem is reached by using an appropriate linearization iterative technique specialized to the proposed formulations. Flexural frames andcross-braced frames are studied, and the related minimum volume structures are reached for assigned features of thebase isolation device. The Bree diagrams of the obtained optimal designs are also determined in order to characterizetheir structural behaviour.
Lingua originaleEnglish
pagine (da-a)93-106
Numero di pagine14
RivistaStructural and Multidisciplinary Optimization
Volume49
Stato di pubblicazionePublished - 2014

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Plastics
Loads (forces)
Cyclic loads
Linearization
Structural analysis
Formulation
Steel
Structural Analysis
Isolation
Diagram
Optimization Problem
Optimal design

All Science Journal Classification (ASJC) codes

  • Software
  • Control and Systems Engineering
  • Computer Science Applications
  • Computer Graphics and Computer-Aided Design
  • Control and Optimization

Cita questo

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title = "Optimal design of elastic plastic frames accounting for seismic protection devices",
abstract = "The optimal design of elastic perfectly plastic steel frames with or without suitable protection devices and subjected to static as well as seismic loadings is studied.Two minimum volume problem formulations are proposed, on the grounds of the so-called statical approach, accountingfor three different resistance limits: the purely elastic limit, the (elastic) shakedown limit and the instantaneouscollapse limit. The adopted load combinations are characterizedby the presence of fixed loads, of quasi-static perfect cyclic loads and dynamic (seismic) loads. The linear elastic effects of the dynamic actions are studied by utilizing a modal technique. The proposed treatment is referred to the most recent Italian code related to the structural analysis anddesign. The solution of the optimization problem is reached by using an appropriate linearization iterative technique specialized to the proposed formulations. Flexural frames andcross-braced frames are studied, and the related minimum volume structures are reached for assigned features of thebase isolation device. The Bree diagrams of the obtained optimal designs are also determined in order to characterizetheir structural behaviour.",
author = "Salvatore Benfratello and Pietro Tabbuso and Luigi Palizzolo",
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T1 - Optimal design of elastic plastic frames accounting for seismic protection devices

AU - Benfratello, Salvatore

AU - Tabbuso, Pietro

AU - Palizzolo, Luigi

PY - 2014

Y1 - 2014

N2 - The optimal design of elastic perfectly plastic steel frames with or without suitable protection devices and subjected to static as well as seismic loadings is studied.Two minimum volume problem formulations are proposed, on the grounds of the so-called statical approach, accountingfor three different resistance limits: the purely elastic limit, the (elastic) shakedown limit and the instantaneouscollapse limit. The adopted load combinations are characterizedby the presence of fixed loads, of quasi-static perfect cyclic loads and dynamic (seismic) loads. The linear elastic effects of the dynamic actions are studied by utilizing a modal technique. The proposed treatment is referred to the most recent Italian code related to the structural analysis anddesign. The solution of the optimization problem is reached by using an appropriate linearization iterative technique specialized to the proposed formulations. Flexural frames andcross-braced frames are studied, and the related minimum volume structures are reached for assigned features of thebase isolation device. The Bree diagrams of the obtained optimal designs are also determined in order to characterizetheir structural behaviour.

AB - The optimal design of elastic perfectly plastic steel frames with or without suitable protection devices and subjected to static as well as seismic loadings is studied.Two minimum volume problem formulations are proposed, on the grounds of the so-called statical approach, accountingfor three different resistance limits: the purely elastic limit, the (elastic) shakedown limit and the instantaneouscollapse limit. The adopted load combinations are characterizedby the presence of fixed loads, of quasi-static perfect cyclic loads and dynamic (seismic) loads. The linear elastic effects of the dynamic actions are studied by utilizing a modal technique. The proposed treatment is referred to the most recent Italian code related to the structural analysis anddesign. The solution of the optimization problem is reached by using an appropriate linearization iterative technique specialized to the proposed formulations. Flexural frames andcross-braced frames are studied, and the related minimum volume structures are reached for assigned features of thebase isolation device. The Bree diagrams of the obtained optimal designs are also determined in order to characterizetheir structural behaviour.

UR - http://hdl.handle.net/10447/101165

UR - http://link.springer.com/article/10.1007%2Fs00158-013-0959-9

M3 - Article

VL - 49

SP - 93

EP - 106

JO - Structural and Multidisciplinary Optimization

JF - Structural and Multidisciplinary Optimization

SN - 1615-147X

ER -