G. Plessis, B. Lallemand, T. Tison, P. Level (2000), Fuzzy modal parameters, Journal of Sound and Vibration, Vol. 233(5), pp. 797-812.

FUZZY MODAL PARAMETERS G. Plessis, B. Lallemand, T. Tison and P. Level

Mechanical Engineering Laboratory, University of Valenciennes BP 311

59304 Valenciennes Cedex, France

ABSTRACT: In order to identify modal parameters with uncertain experimental data, a nondeterministic

identification method based on fuzzy formalism is proposed. The aim is to provide a degree of confidence in

the modal parameters identified.

1. Introduction

2. Deterministic method basis

3. Uncertainty measure modelling

4. Problematics

5. The differentiation method

6. Application

7. Conclusion

Acknowledgments

REFERENCES

APPENDIX A: Vertex interval computation

APPENDIX B: Perturbation interval computation

B1. complex intervals

B2. real intervals