Fatigue design of structures under thermomechanical loadings

Fatigue and Fracture of Engineering Materials and Structures - Tập 25 Số 12 - Trang 1199-1206 - 2002
Éric Charkaluk1, A. Bignonnet2, Andréï Constantinescu3, K. Dang Van3
1Laboratoire de Mécanique de Lille, UMR CNRS 8107, Boulevard Paul Langevin, 59655 Villeneuve d'Ascq Cédex, France
2P.S.A Peugeot Citroen – Direction de la Recherche et de l'Innovation Automobile, chemin de la Malmaison – 91 570, Bievres, France
3Laboratoire de Mecanique des Solides – Ecole Polytechnique, 91 128 Palaiseau, France

Tóm tắt

ABSTRACTThis paper presents a global approach to the design of structures that experience thermomechanical fatigue loading, which has been applied successfully in the case of cast‐iron exhaust manifolds. After a presentation of the design context in the automotive industry, the important hypotheses and choices of this approach, based on a thermal 3D computation, an elastoviscoplastic constitutive law and the dissipated energy per cycle as a damage indicator associated with a failure criterion, are first pointed out. Two particular aspects are described in more detail: the viscoplastic constitutive models, which permit a finite element analysis of complex structures and the fatigue criterion based on the dissipated energy per cycle. The FEM results associated with this damage indicator permit the construction of a design curve independent of temperature; an agreement is observed between the predicted durability and the results of isothermal as well as non isothermal tests on specimens and thermomechanical fatigue tests on real components on an engine bench. These results show that thermomechanical fatigue design of complex structures can be performed in an industrial context.

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Tài liệu tham khảo

10.4271/R-234

Dang‐Van K., 1999, High‐Cycle Fatigue in the Context of Mechanical Design, 1691

Bignonnet A., 1996, Fatigue ′96, 6th International Fatigue Congress, 1825

Vaillant E. Berard J. Y. Lienard C.andRoyer C.(1999)Methodologie de dimensionnement en endurance des pieces de train. Paris. (18eme journees de Printemps de la SF2M.)

Thomas J. J., 1999, L'equivalence fatigue: etat de l'art.

Coffin L. F., 1953, Study of the effects of cyclic thermal stresses on a ductile material, Trans. ASME, 53, 931

10.1520/STP38828S

Ainsworth R. A., 1996, Assessment Procedure for the High Temperature Response of Structures.

RCC‐MR.(1985) Technical Appendix a3 Section 1 Subsection Z. and Materials Design and Construction Rules for Mechanical Components of fbr Nuclear Test Islands. Technical report AFCEN Paris.

Chaboche J. L., 1997, La Fatigue des Materiaux et des Structures., 617

10.1016/S1566-1369(02)80087-5

Thomas J. J., 1998, Fatigue Design '98. Third International Symposium on Fatigue Design., 1

Lederer G. Charkaluk L. Verger E.andContantinescu A.(2000).Numerical lifetime assessment of engine parts submitted to thermomechanical fatigue application to exhaust manifold design.SAE Technical Paper Series 2000‐01‐0789.

Lemaitre J., 1985, Mecanique des Materiaux Solides

Halford G. R. Hirschberg M. H.andManson S. S.(1973)Temperature effects on the strain range partitioning approach for creep fatigue analysis. In:Fatigue at elevated temperature–ASTM STP520 pp658–669.

Manson S. S., 1953, Behaviour of Materials Under Conditions of Thermal Stresses.

10.1179/mht.2000.17.3.001

Kichenin J.(1992)Comportement thermomecanique du polyethylene – application aux structures gazieres.Phd Thesis.Ecole Polytechnique France.

Charkaluk E. Verger L. Constantinescu A. Lederer G.andStolz C.(1999)Lois de comportement viscoplastiques anisothermes pour calculs cycliques sur structures. In:Actes du 4eme colloque national en calcul des structures. (Edited byD.Guedra‐Degoerges Pl.LadevezeandM.Raous).Teknea pp.575–580.

Simo J. C., 1998, Computational Inelasticity.

Feltner C. E., 1961, Micro‐plastic strain energy hysteresis energy as a criterion for fatigue fracture, Trans. ASME, 60, 1

10.1016/0029-5493(95)01043-H

10.1179/mst.1991.7.5.427

10.1179/mst.1993.9.11.1001

10.1046/j.1460-2695.2000.00267.x

Verger L., 2001, Proceedings of the 6th International Conference on Biaxial and Multiaxial Fatigue and Fracture, 867

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Fatigue and Fracture of Engineering Materials and Structures

Tập 25 Số 12

1199-1206

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