Publikatsioonid
2012
H.Hein, L. Feklistova, Free vibration and buckling of functionally graded
Euler-Bernoulli and Timoshenko beams using Haar wavelets.Days on
Diffraction,
St.Petersburg, May 28-June 1, 2012, p 55.
H. Hein, Ü. Lepik Learning Trajectories of Dynamical
Systems,
Mathematical Modelling and Analysis, 2012, 17, 4, 519-531.
Hein, H., Feklistova, L. Free vibration and stability analysis of
functionally graded Timoshenko beams. 10th World Congress on
Computational Mechanics, Sao Paulo, Brazil, 8-13 July, 287,
2012.
Feklistova, L., Hein, H. Damage detection in beams using Haar Wavelets
and machine learning methods. 10th World Congress on Computational
Mechanics, Sao Paulo, Brazil, 8-13 July, 158, 2012.
2011
H.
Hein and L. Feklistova. Applications of
Haar wavelets in parameter identification of vibrating beams. ECCOMAS
International Conference IPM 2011 on Inverse Problems in Mechanics of
Structure
and Materials, 27-30 April 2011, Rzeszow-Sieniawa, Poland, pp. 33-34.
H.
Hein and L. Feklistova. Computationally
efficient delamination detection in composite beams using Haar
wavelets, Mechanical
Systems And Signal Processing, 25,
6, 2257-2270, 2011.
L.
Feklistova, H.
Hein Delamination detection
using support vector machines and neural networks. OAS 2011
International
Conference on Optimization and Analysis of Structures, Tartu, 25-27
August, pp. 11.
H.
Hein, L. Feklistova, Free vibrations of
non-uniform and axially functionally graded beams using Haar wavelets.
Engineering Structures, 33,
3696–3701, 2011.
L.
Feklistova, H. Hein, System Modeling for Delamination
Detection using Support Vector Machines and Neural Networks, Proceedings
of the 24th Nordic Seminar
on Computational Mechanics J. Freund and R. Kouhia
(Eds.), Aalto University, 73-76, 2011.
2010
H.
Hein and L. Feklistova. Free vibrations
of beams with non-uniform cross-sections and elastic end constraints
using Haar
wavelet method. Proceedings of NSCM-23, Stockholm, KTH, ISSN 0348-467X,
185-188, 2010.
2009
H. Hein and L. Feklistova. Identification of
mass location on vibrating beams using Haar wavelets and neural
networks. Proceeding
of the Twenty Second Nordic Seminar
of Computational Mechanics, Aalborg University 2009, ISSN 1901-7278 No
11, 105-108, 2009 pdf
Ü. Lepik and H. Hein Can noise
annihilate chaos? 4th
International Conference on Physics and Control, September
1-4, 2009
pdf
2008
H. Hein and Ü. Lepik Regularization of the Trajectories of
Dynamical Systems by Adjusting Parameters, in Proceedings Of World
Academy Of Science, Engineering And Technology, Volume 33, September
2008, ISSN: 1307-6884, 328-332. pdf
2007
H. Hein and Ü. Lepik. Response of nonlinear
oscillators with
random frequency of excitation, revisited. Journal of Sound and
Vibration, 301, 3-5, 3, 2007, 1040-1049 pdf
Helle Hein, Jüri Kiho, Reimo Palm, Eno Tõnisson
Programmeerimise ülesannete kogu, Tartu, 2007.
H. Hein Determination of foundation characteristics of vibrating beams
using wavelet transform and neural network, in Wavelet Applications in
Industrial Processing V, edited by Frederic Truchelet, Olivier
Laligant, Proceedings of SPIE Vol. 6763 (SPIE Bellingham, WA, 2007)
676309, 1-9.pdf
2006
H. Hein. The Influence of Delamination on the Free Vibrations
of
Composite Beams on Pasternak Soil. Proc. Estonian Acad. Sci. Phys.
Math., 2006, 55, 4, 220–234.pdf
H. Hein. Vibrations of composite beams with multiple
delaminations. III European Conference on Computational Mechanics
Solids, Structures and Coupled problems in Engineering, Lisbon,
Portugal, 5–8 June 2006. Full paper in CD, 11p, ECCOMAS,
APMTAC,
Springer pdf
H.Hein Vibrations of composite beams with multiple delaminations . III
European Conference on Computational Mechanics Solids, Structures and
Coupled problems in Engineering C.A. Mota Soares et.al. (eds.), Lisbon,
Portugal, 5–8 June 2006, Springer, 269.
H. Hein The influence of delamination and concentrated masses on the
free vibrations of Euler beams on Pasternak soil. Dynamics Days Europe,
2006, 63-64.
A.Peder, H.Hein, L.Kimmel Objektorienteeritud programmeerimine.
Praktikumiju-hend. Tartu 2006
2005
H. Hein_, Ü. Lepik The effect of random frequency on
chaotic
motion of some nonlinear oscillators. Proceedings of Dynamics Days
2005, Berlin 25-28 July, 2005, pp97
Ü. Lepik and H. Hein. On response of nonlinear
oscillators
with random frequency of excitation. Journal of Sound and Vibration,
288, 1-2, 22, 2005, 275-292.
H. Hein. The Effect of Delamination on the Natural
Frequencies of
the Composite Beams on Two-Parameter Foundation. Journal of Structural
Mechanics, 38, Nr. 3, 2005, 97 - 100. Special issue for the
8th
Nordic Seminar on Computational Mechanics.
H.Hein Optimization of strain-hardening plates of piece-wise constant
thickness (6 pages). Papers of The Fifth World Congress of
STRUCTURAL AND MULTIDISCIPLINARY OPTIMIZATION, paper no.104
CD
-2005
2004
H.Hein. Vibrations of delaminated beams on elastic
foundation. NSCM: Proceedings of 17th Nordic
Seminar on
Computational Mechanics, Stockholm, 2004, 209 – 212.
H.Hein, Ü.Lepik Stochastic response of some nonlinear
oscillators,
In Proceedings International Conference – Dynamical Systems
and
Applications, July 05-10, 2004, Antalya, Turkey, 55.
H. Hein, Ü. Lepik Stochastic response of nonlinear
oscillators,
5-10 July 2004, Antalya, Turkey – Dynamical Systems and
Applications, Proceedings, pp. 395-407.
2003
H. Hein Optimization of strain-hardening plates of piece-wise constant
thickness. Short papers of structural and multidisciplinary
optimization, 2003, 109-110.
2002
J. Lellep, H. Hein Optimization of clamped plastic shallow
shells
subjected to initial impulsive loading, Engineering Optimization, 2002,
34, N5, 545 – 556.
H. Hein Optimal Design of Elastic-Plastic Laminated Beams, WCCM V World
Congress on Computational Mechanics, 2002, Vienna, Austria.
2001
Hein H., Lellep J. Optimization of plastic shells subjected to
impulsive loading. In WCSMO4 - Dalian, China, ISSMO, 2001.
2000
Hein H and Lellep J. Optimal plastic design of shallow curved beams
with step–wise varying cross section. Mech. Struct. and
Mach.,
2000, 28(4), 355 – 365.
Lellep J., Hein H. Optimization of stepped shells subjected to
impulsive loading. 4-th Euromech. Solid Mechanics Conference, Metz,
2000 p.549.
1999
Hein H., Lellep J. Optimization of shallow shells with different yield
stresses in tension and compression. Structural Optimization, 1999, 18,
N2/3, 156 -161.
Lellep J., Hein H. Optimization of plastic shallow shells subjected to
impulse loading. Short Paper proceedings, Third World Congress of
Structural and Multidistsiplinary Optimization, May 17-21, 1999,
Buffalo, Vol 1, 30-32.
1997
Hein H. Optimal plastic design of shallow spherical shells with
step–wise varying cross section. Second World Congress of
Structural and Multidistsiplinary Optimization, 1997, Vol.2, 829
– 833.
Hein H. Optimization of plastic shallow shells with different yield
stresses in tension and compression. Tenth Nordic Seminar on
Computational Mechanics, Tallinn, 1997, 130 – 133.
1996
Lellep J., Hein H. Optimization of rigid – plastic shallow
curved
beams. Structural Optimization, 1996, 12, N1, 57 – 62.
1994
Lellep J.,Hein H. Optimization of clamped rigid–plastic
shallow
shells of piece–wise constant thickness. Int. J. of
Non
– Linear Mechanics, 1994, 29, 4, 625 – 636.
Hein H. Optimal design of rigid-plastic annular plates with piece-wise
constant thickness. Tartu Ülikooli Toimetised, 1994, 973, 48
– 59.
1993
Hein H., Lellep J. Optimal plastic design of shallow shells with
step–wise varying cross section. Proc. Estonian Acad. Sci.
Phys.
Math., 1993, 42, 1, 22 – 31.
Lellep J., Hein H. Optimization of rigid – plastic shallow
spherical shells of piece – wise constant thickness.
Structural
Optimization, 1993, 6, N2, 134 – 141.
Hein H., Lellep J. Optimization of geometrically
non–linear
rigid–plastic circular plates of piece–wise
constant
thickness. Prikl. Mekh. (Soviet Appl. Mech.), Kiew, 1993, 29, N6, 57
– 63.
Villems A., Pentel A., Koit M., Hein H. Pöial J., Hein K.,
Pandis
A., Rünkaru E. Arvutikursus algajale. Tartu
Ülikool
Täienduskskus, 1993.
1992
Lellep J., Hein H. An approximate analysis of large plastic
deformations of circular and annular plates Tartu Ülikooli
Toimetised, 1992, 939, 54 – 69.
1989
Lellep J., Hein H. Optimal design of plastic cylindrical shells with
longitudinal rib – reinforcement (in Russian), Tartu Riikl.
Ülik. Toim. (Trans. Tartu State Univ.), 1989, 853, 49
– 58.
Lellep J., Hein H. Optimal design of fiber-reinforced plastic
cylindrical shells (in Russian). Problems of optimization of of plastic
shells. Proc. Conf. Sewastopol, 07-09.09 1989, 59.
1988
Lellep J., Hein H. Large plastic deflections of rigid–plastic
shallow spherical shells (in Russian), Tartu Riikl. Ülik.
Toim.
(Trans. Tartu State Univ.), 1988, 799, 37 – 51.
1987
Lellep J., Hein H. Optimal design of fiber–reinforced plastic
cylindrical shells (in Russian), Tartu Riikl. Ülik. Toim.
(Trans.
Tartu State Univ.), 1987, 772, 96 – 109.