Application of a cycle jump technique for acceleration of fatigue crack growth simulation

Ramin Moslemian (Invited author), A.M. Karlsson (Invited author), Christian Berggreen (Invited author)

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Abstract

A method for accelerated simulation of fatigue crack growth in a bimaterial interface is proposed. To simulate fatigue crack growth in a bimaterial interface a routine is developed in the commercial finite element code ANSYS and a method to accelerate the simulation is implemented. The proposed method is based on conducting finite element analysis for a set of cycles to establish a trend line, extrapolating the trend line spanning many cycles, and use the extrapolated state as initial state for additional FE simulations. The inputs of the developed method are the crack growth rate vs. energy release rate diagrams for different mode-mixities. Once these diagrams for a specific interface are available, fatigue crack growth in any structure with the same interface can be simulated. Using the developed method, fatigue crack growth in the interface of a sandwich beam is simulated. Results of the simulation show that with fair accuracy, using the cycle jump method, more than 70% reduction in computation time can be achieved.
Original languageEnglish
Title of host publicationICSS 9
EditorsG. Ravichandran
Publication date2010
Publication statusPublished - 2010
Event9th International Conference on Sandwich Structures - Pasadena, CA, United States
Duration: 14 Jun 201016 Jun 2010
Conference number: 9

Conference

Conference9th International Conference on Sandwich Structures
Number9
CountryUnited States
CityPasadena, CA
Period14/06/201016/06/2010

Keywords

  • Fracture mechanics
  • Bimaterial interface
  • Fatigue crack growth
  • Cycle jump technique

Cite this

Moslemian, R., Karlsson, A. M., & Berggreen, C. (2010). Application of a cycle jump technique for acceleration of fatigue crack growth simulation. In G. Ravichandran (Ed.), ICSS 9
Moslemian, Ramin ; Karlsson, A.M. ; Berggreen, Christian. / Application of a cycle jump technique for acceleration of fatigue crack growth simulation. ICSS 9. editor / G. Ravichandran. 2010.
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title = "Application of a cycle jump technique for acceleration of fatigue crack growth simulation",
abstract = "A method for accelerated simulation of fatigue crack growth in a bimaterial interface is proposed. To simulate fatigue crack growth in a bimaterial interface a routine is developed in the commercial finite element code ANSYS and a method to accelerate the simulation is implemented. The proposed method is based on conducting finite element analysis for a set of cycles to establish a trend line, extrapolating the trend line spanning many cycles, and use the extrapolated state as initial state for additional FE simulations. The inputs of the developed method are the crack growth rate vs. energy release rate diagrams for different mode-mixities. Once these diagrams for a specific interface are available, fatigue crack growth in any structure with the same interface can be simulated. Using the developed method, fatigue crack growth in the interface of a sandwich beam is simulated. Results of the simulation show that with fair accuracy, using the cycle jump method, more than 70{\%} reduction in computation time can be achieved.",
keywords = "Fracture mechanics, Bimaterial interface, Fatigue crack growth, Cycle jump technique",
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Moslemian, R, Karlsson, AM & Berggreen, C 2010, Application of a cycle jump technique for acceleration of fatigue crack growth simulation. in G Ravichandran (ed.), ICSS 9. 9th International Conference on Sandwich Structures, Pasadena, CA, United States, 14/06/2010.

Application of a cycle jump technique for acceleration of fatigue crack growth simulation. / Moslemian, Ramin (Invited author); Karlsson, A.M. (Invited author); Berggreen, Christian (Invited author).

ICSS 9. ed. / G. Ravichandran. 2010.

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

TY - GEN

T1 - Application of a cycle jump technique for acceleration of fatigue crack growth simulation

AU - Moslemian, Ramin

AU - Karlsson, A.M.

AU - Berggreen, Christian

PY - 2010

Y1 - 2010

N2 - A method for accelerated simulation of fatigue crack growth in a bimaterial interface is proposed. To simulate fatigue crack growth in a bimaterial interface a routine is developed in the commercial finite element code ANSYS and a method to accelerate the simulation is implemented. The proposed method is based on conducting finite element analysis for a set of cycles to establish a trend line, extrapolating the trend line spanning many cycles, and use the extrapolated state as initial state for additional FE simulations. The inputs of the developed method are the crack growth rate vs. energy release rate diagrams for different mode-mixities. Once these diagrams for a specific interface are available, fatigue crack growth in any structure with the same interface can be simulated. Using the developed method, fatigue crack growth in the interface of a sandwich beam is simulated. Results of the simulation show that with fair accuracy, using the cycle jump method, more than 70% reduction in computation time can be achieved.

AB - A method for accelerated simulation of fatigue crack growth in a bimaterial interface is proposed. To simulate fatigue crack growth in a bimaterial interface a routine is developed in the commercial finite element code ANSYS and a method to accelerate the simulation is implemented. The proposed method is based on conducting finite element analysis for a set of cycles to establish a trend line, extrapolating the trend line spanning many cycles, and use the extrapolated state as initial state for additional FE simulations. The inputs of the developed method are the crack growth rate vs. energy release rate diagrams for different mode-mixities. Once these diagrams for a specific interface are available, fatigue crack growth in any structure with the same interface can be simulated. Using the developed method, fatigue crack growth in the interface of a sandwich beam is simulated. Results of the simulation show that with fair accuracy, using the cycle jump method, more than 70% reduction in computation time can be achieved.

KW - Fracture mechanics

KW - Bimaterial interface

KW - Fatigue crack growth

KW - Cycle jump technique

M3 - Article in proceedings

BT - ICSS 9

A2 - Ravichandran, G.

ER -