### Resumé

Originalsprog | Engelsk |
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Udgivelses sted | Aalborg |
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Forlag | Dept. of Building Technology and Structural Engineering, Aalborg University |

Antal sider | 24 |

Status | Udgivet - 1987 |

Navn | Structural Reliability Theory |
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Nummer | 31 |

Vol/bind | R8717 |

ISSN | 0902-7513 |

### Fingerprint

### Bibliografisk note

PDF for print: 29 pp.### Emneord

- Stochastic Fatigue Load Generation
- Loadings
- Loads
- Stochastic Loads

### Citer dette

*Simulation of Stochastic Loads for Fatigue Experiments*. Aalborg: Dept. of Building Technology and Structural Engineering, Aalborg University. Structural Reliability Theory, Nr. 31, Bind. R8717

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*Simulation of Stochastic Loads for Fatigue Experiments*. Structural Reliability Theory, nr. 31, bind R8717, Dept. of Building Technology and Structural Engineering, Aalborg University, Aalborg.

**Simulation of Stochastic Loads for Fatigue Experiments.** / Sørensen, John Dalsgaard; Brincker, Rune.

Publikation: Bog/antologi/afhandling/rapport › Rapport › Forskning › peer review

TY - RPRT

T1 - Simulation of Stochastic Loads for Fatigue Experiments

AU - Sørensen, John Dalsgaard

AU - Brincker, Rune

N1 - PDF for print: 29 pp.

PY - 1987

Y1 - 1987

N2 - A simple direct simulation method for stochastic fatigue load generation is described in this paper. The simulation method is based on the assumption that only the peaks of the load process significantly affect the fatigue life. The method requires the conditional distribution functions of load ranges given the last peak values. Analytical estimates of these distribution functions are presented in the paper and compared with estimates based on a more accurate simulation method. In the more accurate simulation method samples at equidistant times are generated by approximating the stochastic load process by a Markov process. Two different spectra from two tubular joints in an offshore structure (one narrow banded and one wide banded) are considered in an example. The results show that the simple direct method is quite efficient and is results in a simulation speed at about 3000 load cycles per second using an IBM PC. Finally the proposed simulation method for fatigue load generation is tested by comparing some fatigue damage measures obtained by the simulation methods.

AB - A simple direct simulation method for stochastic fatigue load generation is described in this paper. The simulation method is based on the assumption that only the peaks of the load process significantly affect the fatigue life. The method requires the conditional distribution functions of load ranges given the last peak values. Analytical estimates of these distribution functions are presented in the paper and compared with estimates based on a more accurate simulation method. In the more accurate simulation method samples at equidistant times are generated by approximating the stochastic load process by a Markov process. Two different spectra from two tubular joints in an offshore structure (one narrow banded and one wide banded) are considered in an example. The results show that the simple direct method is quite efficient and is results in a simulation speed at about 3000 load cycles per second using an IBM PC. Finally the proposed simulation method for fatigue load generation is tested by comparing some fatigue damage measures obtained by the simulation methods.

KW - Stochastic Fatigue Load Generation

KW - Loadings

KW - Loads

KW - Stochastic Loads

KW - Stochastic Fatigue Load Generation

KW - Loadings

KW - Loads

KW - Stochastic Loads

M3 - Report

T3 - Structural Reliability Theory

BT - Simulation of Stochastic Loads for Fatigue Experiments

PB - Dept. of Building Technology and Structural Engineering, Aalborg University

CY - Aalborg

ER -