Publikatsioonid
2017
Hein, H., Jaanuska, L. (2017). Prediction of parameters in cracked
nano-beams using machine learning methods. In: Proceedings of the 30th
Nordic Seminar on Computational Mechanics: 25-27 October 2017.
(Toim.) J. Høgsberg. N.L. Pedersen. Lyngby, Denmark, 2017, 78 -
81.
2016
Feklistova, Ljubov; Hein, Helle (2016). Crack
Identification in Beams Using Haar Wavelets and Machine Learning
Methods. International Journal of Mechanics, vol. 10, 281-287.
2015
Feklistova, Ljubov; Hein, Helle (2015). Stability Determination
in Vibrating Non-homogeneous Functionally Graded Timoshenko Beams.
International Conference on Mechanics and Control Engineering (MCE),
Nanjing, PEOPLES R CHINA Date: APR 11-12, 2015. Destech Publicat Inc,
618 - 623
Lepik, Ü., Hein, H., Application of the Haar wavelet method for
solution the problems of mathematical calculus, Waves, Wavelets and
Fractals. Volume 1, Issue 1, ISSN (Online) 2449-5557, DOI:
10.1515/wwfaa-2015-0001, October 2015.
Feklistova, L.; Hein, H. (2015). Parameter
identification in
functionally graded Timoshenko beams using Haar wavelets: OAS 2013;
Tartu, Estonia; 23.-25.08 2015. (Toim.) Lellep, J.; Puman, E..
University of Tartu Press, 2015, 17 - 22.
Hein, H.; Lukner, H.; Poom, A.; Puman, E.; Soomets, E.;
Suija, K. (2015). Kavandatavad muudatused õppetöös.
In: Konverentsi posterettekanded: ÕPPEJÕULT
ÕPPEJÕULE 2015: KOLLEGIAALNE TAGASISIDE, 14. jaanuar
2015. (Toim.) Ene Voolaid. Tartu:.
2014
Lepik, Ülo; Hein, Helle (2014). Haar Wavelets: With
Applications. Springer, Series: Mathematical Engineering.
Feklistova, L., Hein, H. (2014) Parameter identification for
supports and cracks in beams with non-classical boundary conditions.
Construction Materials and Structures S.O.Ekolu et al.(Eds.) pp.
1295-1302, IOS Press.
2013
Feklistova, L.; Hein, H.; Vikat, M. (2013). Parameter
identification of vibrating beams with elastic boundary conditions. In:
Proceedings of the 26th Nordic Seminar on Computational
Mechanics: Oslo, Norway; 23-25 October 2013. (Toim.) A. Logg,
K.-A. Mardal, A. Massing. Oslo: Center for Biomedical Computing Simula
Research Laboratory, 2013, 54 - 57.
Feklistova, L.; Hein, H. (2013). Crack identification in vibrating
beams using Haar wavelets and neural networks. In: Applied Mechanics
and Materials: 2013 International Conference on Recent Trends in
Materials and Mechanical Engineering; Singapore; 21-23 September 2013.
(Toim.) Qi Luo; Wei Deng. Switzerland: Trans Tech Publications Ltd,
2013, 62 - 67.
Feklistova, L.; Hein, H. (2013). Crack localization in Euler-Bernoulli
beams. In: Proceedings of the 2nd International Conference Optimization
and Analysis of Structures: OAS 2013; Tartu, Estonia; 25.-27.08 2013.
(Toim.) Lellep, J.; Puman, E.. University of Tartu Press, 2013, 35 -
38.
2012
Feklistova, L., Hein, H. (2012). Delamination identification
using
machine learning methods and Haar wavelets. Computer Assisted Methods
in Engineering and Science, 19(4), 351 - 360.
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,
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
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.
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.