Collapse Probability for Elasto-Plastic Beam Structures

Publikation: Bidrag til bog/antologi/rapport/konference proceedingKonferenceartikel i proceedingForskningpeer review

Resumé

In present design practice considerations on structural safety are usually concentrated on failure states corresponding to initial failure of an element. For a frame structure that means failure of a cross-section of the structure. Sufficient reliability with respect to this limit state is expected to be achieved by designing the structure on an element basis such that each member has at least a presctibed reliability. Most structures are redundant in the sense that failure of the first single element merely leads to redistribution of the load. The system reliability of the structure is in this paper defined as formation of a yield mechanism. System reliability aspects can be important in structural design and it is therefore relevant to consider limit state progressive failure in a probabilistic setting.
In reliability studies of progressive failures the analysis with respect to plastic collapse under proportional loading of linear elastic - ideal plastic structures has been undertaken in numerous works, but only a few authors have considered interaction of load effects in the yield condition. These works can be divided into two different formulations namely a total- and an incremental approach. The incremental approach has been used by Amdahl, Leira & Wu (1] and the total approach by Bjerager (2], Bådshauge & Bach-Gansmo (3], Ditlevsen (4], Høj & Loklindt (6], Murotsu, Okada & Matsuzaki (8] and Turner & Baker (12].
OriginalsprogEngelsk
TitelReliability and Optimization of Structural Systems : Proceedings of the 2nd IFIP WG7.5 working conference on reliability and optimization of structural systems
RedaktørerP. Thoft-Christensen
Antal sider16
ForlagSpringer
Publikationsdato1989
Sider85-100
ISBN (Trykt)3-540-51283-7
StatusUdgivet - 1989
BegivenhedIFIP WG7.5 Working Conference on Reliability and Optimization of Structural Systems - London, Storbritannien
Varighed: 25 sep. 198827 sep. 1988
Konferencens nummer: 2

Konference

KonferenceIFIP WG7.5 Working Conference on Reliability and Optimization of Structural Systems
Nummer2
LandStorbritannien
ByLondon
Periode25/09/198827/09/1988
NavnLecture Notes in Engineering
Vol/bind48
ISSN0176-5035

Fingerprint

Plastics
Structural design

Emneord

  • Collapse Probability
  • Elasto-Plastic
  • Beam
  • Structural Safety

Citer dette

Delmar, M. V., Sørensen, J. D., & Thoft-Christensen, P. (1989). Collapse Probability for Elasto-Plastic Beam Structures. I P. Thoft-Christensen (red.), Reliability and Optimization of Structural Systems: Proceedings of the 2nd IFIP WG7.5 working conference on reliability and optimization of structural systems (s. 85-100). Springer. Lecture Notes in Engineering, Bind. 48
Delmar, M.V. ; Sørensen, John Dalsgaard ; Thoft-Christensen, Palle. / Collapse Probability for Elasto-Plastic Beam Structures. Reliability and Optimization of Structural Systems: Proceedings of the 2nd IFIP WG7.5 working conference on reliability and optimization of structural systems. red. / P. Thoft-Christensen. Springer, 1989. s. 85-100 (Lecture Notes in Engineering, Bind 48).
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title = "Collapse Probability for Elasto-Plastic Beam Structures",
abstract = "In present design practice considerations on structural safety are usually concentrated on failure states corresponding to initial failure of an element. For a frame structure that means failure of a cross-section of the structure. Sufficient reliability with respect to this limit state is expected to be achieved by designing the structure on an element basis such that each member has at least a presctibed reliability. Most structures are redundant in the sense that failure of the first single element merely leads to redistribution of the load. The system reliability of the structure is in this paper defined as formation of a yield mechanism. System reliability aspects can be important in structural design and it is therefore relevant to consider limit state progressive failure in a probabilistic setting. In reliability studies of progressive failures the analysis with respect to plastic collapse under proportional loading of linear elastic - ideal plastic structures has been undertaken in numerous works, but only a few authors have considered interaction of load effects in the yield condition. These works can be divided into two different formulations namely a total- and an incremental approach. The incremental approach has been used by Amdahl, Leira & Wu (1] and the total approach by Bjerager (2], B{\aa}dshauge & Bach-Gansmo (3], Ditlevsen (4], H{\o}j & Loklindt (6], Murotsu, Okada & Matsuzaki (8] and Turner & Baker (12].",
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Delmar, MV, Sørensen, JD & Thoft-Christensen, P 1989, Collapse Probability for Elasto-Plastic Beam Structures. i P Thoft-Christensen (red.), Reliability and Optimization of Structural Systems: Proceedings of the 2nd IFIP WG7.5 working conference on reliability and optimization of structural systems. Springer, Lecture Notes in Engineering, bind 48, s. 85-100, IFIP WG7.5 Working Conference on Reliability and Optimization of Structural Systems, London, Storbritannien, 25/09/1988.

Collapse Probability for Elasto-Plastic Beam Structures. / Delmar, M.V.; Sørensen, John Dalsgaard; Thoft-Christensen, Palle.

Reliability and Optimization of Structural Systems: Proceedings of the 2nd IFIP WG7.5 working conference on reliability and optimization of structural systems. red. / P. Thoft-Christensen. Springer, 1989. s. 85-100 (Lecture Notes in Engineering, Bind 48).

Publikation: Bidrag til bog/antologi/rapport/konference proceedingKonferenceartikel i proceedingForskningpeer review

TY - GEN

T1 - Collapse Probability for Elasto-Plastic Beam Structures

AU - Delmar, M.V.

AU - Sørensen, John Dalsgaard

AU - Thoft-Christensen, Palle

PY - 1989

Y1 - 1989

N2 - In present design practice considerations on structural safety are usually concentrated on failure states corresponding to initial failure of an element. For a frame structure that means failure of a cross-section of the structure. Sufficient reliability with respect to this limit state is expected to be achieved by designing the structure on an element basis such that each member has at least a presctibed reliability. Most structures are redundant in the sense that failure of the first single element merely leads to redistribution of the load. The system reliability of the structure is in this paper defined as formation of a yield mechanism. System reliability aspects can be important in structural design and it is therefore relevant to consider limit state progressive failure in a probabilistic setting. In reliability studies of progressive failures the analysis with respect to plastic collapse under proportional loading of linear elastic - ideal plastic structures has been undertaken in numerous works, but only a few authors have considered interaction of load effects in the yield condition. These works can be divided into two different formulations namely a total- and an incremental approach. The incremental approach has been used by Amdahl, Leira & Wu (1] and the total approach by Bjerager (2], Bådshauge & Bach-Gansmo (3], Ditlevsen (4], Høj & Loklindt (6], Murotsu, Okada & Matsuzaki (8] and Turner & Baker (12].

AB - In present design practice considerations on structural safety are usually concentrated on failure states corresponding to initial failure of an element. For a frame structure that means failure of a cross-section of the structure. Sufficient reliability with respect to this limit state is expected to be achieved by designing the structure on an element basis such that each member has at least a presctibed reliability. Most structures are redundant in the sense that failure of the first single element merely leads to redistribution of the load. The system reliability of the structure is in this paper defined as formation of a yield mechanism. System reliability aspects can be important in structural design and it is therefore relevant to consider limit state progressive failure in a probabilistic setting. In reliability studies of progressive failures the analysis with respect to plastic collapse under proportional loading of linear elastic - ideal plastic structures has been undertaken in numerous works, but only a few authors have considered interaction of load effects in the yield condition. These works can be divided into two different formulations namely a total- and an incremental approach. The incremental approach has been used by Amdahl, Leira & Wu (1] and the total approach by Bjerager (2], Bådshauge & Bach-Gansmo (3], Ditlevsen (4], Høj & Loklindt (6], Murotsu, Okada & Matsuzaki (8] and Turner & Baker (12].

KW - Collapse Probability

KW - Elasto-Plastic

KW - Beam

KW - Structural Safety

KW - Collapse Probability

KW - Elasto-Plastic

KW - Beam

KW - Structural Safety

M3 - Article in proceeding

SN - 3-540-51283-7

T3 - Lecture Notes in Engineering

SP - 85

EP - 100

BT - Reliability and Optimization of Structural Systems

A2 - Thoft-Christensen, P.

PB - Springer

ER -

Delmar MV, Sørensen JD, Thoft-Christensen P. Collapse Probability for Elasto-Plastic Beam Structures. I Thoft-Christensen P, red., Reliability and Optimization of Structural Systems: Proceedings of the 2nd IFIP WG7.5 working conference on reliability and optimization of structural systems. Springer. 1989. s. 85-100. (Lecture Notes in Engineering, Bind 48).