Institute of Mechanics

Position: Assoc. Proffessor

Department: Solid Mechanics

Room number: 303

Phone: +359 2 979 6438

E-mail: valeva@imbm.bas.bg

Scientific degrees, institution, year:

Mathematician 1975-1977

Institute of Mechanics and Biomechanics,

Bulgarian Academy of Sciences, Sofia

Ph.D. Student Phys.-Math.Sci. 1977-1980

Institute for Problems of Mechanics,

Russian Academy of Sciences, Moscow

Research Fellow, Dr. 1981-1988

Institute of Mechanics and Biomechanics,

Bulgarian Academy of Sciences, Sofia

Assoc. Proffessor, Dr. 1989-…

Institute of Mechanics (IMech),

Bulgarian Academy of Sciences, Sofia

Fields of Research:

Analytical and Numerical Modeling (BEM); Two-phase composite structures; Identification, Homogenization of Material properties by BEM; Thermo-mechanical Behaviour of Ceramic-Metal Functionally Graded Plates and Thin-layered Structures

Recent Publications:

1. G. Nikolova, J, Ivanova, V. Valeva, Z. Mroz, Mechanical and thermal loading of two-plate structure, Comptes Rendue de l’Academie Bulgare des Sciences, v. 60, N 7, pp. 735-742, (2007).

2. J. Ivanova, Z. Mroz, V. Valeva, Mechanical modeling of the delamination of bi-material plate structure, J. Theor. Appl. Mechanics, Sofia, 2006, vol. 36 , No. 4, pp. 39-54.

3. V. Valeva, J. Hristova, J. Ivanova, Numerical prediction of the strain state of thermoset matrix/mineral filler composite plates, Mechanics of Composite Materials, 2005, vol. 41, No. 2, pp. 145-156.

4. V. Valeva, J. Ivanova, Z. Mroz, Heat Conduction of Layered Structute with Interfacial Debonding. Part I. Parallel Layers, In: Proc. 10th Jubilee Nat. Congress on Theor. and Appl. Mech., 13-16 Sept. 2005, Varna, Bulgaria, (2005), pp. 385-390.

5. V. Valeva, J. Ivanova, Z. Mroz, Heat Conduction of Layered Structute with Interfacial Debonding. Part II. Middle Angular Layer, In: Proc. 10th Jubilee Nat. Congress on Theor. and Appl. Mech., 13-16 Sept. 2005, Varna, Bulgaria, (2005), pp. 391-395.

6. V. Valeva, J. Hristova, J. Ivanova, Numerical prediction of the strain state of thermoset matrix/mineral filler composite plates, Mechanics of Composite Materials, 2005, vol. 41, No. 2, pp. 145-156.

7. J. Ivanova, Z. Mroz, V. Valeva, Interphase Model for a Multilayer Structures Applied in Heat Conduction Problems, J. Theor. Appl. Mechanics, Sofia, 2004, vol. 34, No. 4, pp. 15-30.

8. J. Hristova, V. Valeva, J. Ivanova, Aging and filler effects on the creep model parameters of thermoset composites, J. Composite Science and Technology, 62, (2002), pp. 1097-1103.

9. V. Valeva, J. Ivanova, Z. Mroz, Parametric Analysis of the Decay Rate of End Effects in Heat Conduction for Multi-layered Semi-infinite Sandwich Structures, J. Theor. and Appl. Mechanics, Sofia, 2002, vol. 32, No. 4, pp. 39-52.

10. J. Ivanova, V. Valeva, F. Pastrone, Wave propagation in one-dimensional body with microstructure, In: Proc. 9^th Nat. Congress Theor. Appl. Mech., 19-22 Sept. 2001, vol. 1, pp. 505-510.

11. J. Hristova, V. Valeva, J. Ivanova, Model Parameter identififcation for filled polyester resin, In: Proc. 9^th Nat. Congress Theor. Appl. Mech., 19-22 Sept. 2001, vol. 1, pp. 487-493.

12. A. Baltov, V. Valeva, J. Ivanova, Modeling of materials sensitive to the type of rheological processes, Facta Universitatis, Series: Mechanics, Automatic Control and Robotics, Vol. 2, No. 10, 2000, pp. 1283-1291.

13. V. Valeva, J. Ivanova, Numerical Prediction of the Behavior of Polymer-Matrix Composite, In: Proc. 9th Int. Conf. on Mechanics and Technology of Composite Materials, Sofia, Sept. 11-14, 2000, pp. 424-431.

14. A. Baltov, V. Valeva, J. Ivanova, On the Modelling of Masonry as a Sensitive to the Type of Loading Composite. Part II. Mechano-Mathematical Modelling and Applications, J. of Material Sciences and Technology, Vol. 8, No. 1, 2000, pp. 12-19.

15. A. Baltov, V. Valeva, J. Ivanova, On the Modelling of Masonry as a Sensitive to the Type of Loading Composite. Part I. Basic Assumptions and Homogenization, J. of Material Sciences and Technology, Vol. 7, No. 4, 1999, pp. 3-13 .

16. V. Valeva, J. Ivanova, F. Pastrone, Interfacial debonding of two-phase composite with periodic structures, J. Theoretical and Applied Fracture Mechanics, 31, 1999, pp. 91-98.

17. V. Valeva, Modelling the Separation of Physically Nonlinear Material from the Inclusions by BEM, (Int. Conf. on Mechanics, Physics and Structure of Materials, August 19-24, 1990, Thessaloniki, Greece, Abstracts pp. 117-118), J. of Mechanical Behavior of Materials, Vol. 5, No. 2, 1994, pp. 129-139.

18. J. Ivanova, P. Dineva, V. Valeva, L. Hadjikov, Design sensitivity analysis for shape optimization by the BEM, Int. J. of Engineering Analysis with BE, U.K., Vol. 8, No. 5, 1991, pp. 218-223.

Recent Projects: KMM-NoE Project no. NMP3-CT-2004-502243

- Joint research projects with: University of Torino (Italy),

- Institute of Fundamental Technological Research, Warsaw (Poland),

- IMCO Copernicus ERBICC15CT9

Membership: Union of Bulgarian Mathematician

Institute of Mechanics tel.: +359 2 973 31 40; fax: +359 2 870 74 98; e-mail: office@imbm.bas.bg