382
S. Vlase et al.
As unpredictable excitations may occur, however, it is a problem to perform a correct
design of the interaction chamber and the bar on which the target is fixed. Based on
the analysis, it has been found that, from a theoretical point of view, it is possible
that a unitary amplitude of the vibration of the ground in one direction may result
in vibration with 13 times greater amplitude of the target in the same direction. This
is because, in this version, this bar has too low stiffness. It is necessary to redesign
this clamping device so that the transmissibility of the displacement decreases. This
is the next objective of the joint research team.
References
1. S. Vlase, A. Cris , an, C. Itu, M.L. Scutaru, FE analysis of the interaction chamber for the ELI-NP
array of detectors (ELIADE). Acta Tech. Napoc. Ser.: Appl. Math. Mech. Eng. 62(I) (2019)
2. S. Vlase et al., Optical analysis of the reaction chamber for the ELIADE array. Procedia Manuf.
22, 215–220 (2018)
3. A. Öchsner, Computational Statics and Dynamics: An Introduction Based on the Finite Element
Method (Springer, Singapore, 2016)
4. S. Vlase, P.P. Teodorescu, Elasto-dynamics of a solid with a general “rigid” motion using FEM
model part I. Theor. Approach. Rom. J. Phys. 58(7–8), 872–881 (2013)
5. S. Vlase, M. Marin, A. Öchsner, et al., Motion equation for a flexible one-dimensional element
used in the dynamical analysis of a multibody system. Continuum Mech. Thermodyn. 31, 715
(2019). https://doi.org/10.1007/s00161-018-0722-y
6. A.G. Erdman, G.N. Sandor, A. Oakberg, A general method for kineto-elastodynamic analysis
and synthesis of mechanisms. J. Eng. Ind. ASME Trans. 94(4), 1193–1203 (1972)
7. J. Gerstmayr, J. Schberl, A 3D finite element method for flexible multibody systems. Multibody
Syst. Dyn. 15(4), 305–320 (2006)
8. B. Simeon, On lagrange multipliers in flexible multibody dynamic. Comput. Methods Appl.
Mech. Eng. 195(50–51), 6993–7005 (2006)
9. S. Vlase, Dynamical response of a multibody system with flexible element with a general threedimensional motion. Rom. J. Phys. 57(3–4), 676–693 (2012)
S. Vlase et al.
As unpredictable excitations may occur, however, it is a problem to perform a correct
design of the interaction chamber and the bar on which the target is fixed. Based on
the analysis, it has been found that, from a theoretical point of view, it is possible
that a unitary amplitude of the vibration of the ground in one direction may result
in vibration with 13 times greater amplitude of the target in the same direction. This
is because, in this version, this bar has too low stiffness. It is necessary to redesign
this clamping device so that the transmissibility of the displacement decreases. This
is the next objective of the joint research team.
References
1. S. Vlase, A. Cris , an, C. Itu, M.L. Scutaru, FE analysis of the interaction chamber for the ELI-NP
array of detectors (ELIADE). Acta Tech. Napoc. Ser.: Appl. Math. Mech. Eng. 62(I) (2019)
2. S. Vlase et al., Optical analysis of the reaction chamber for the ELIADE array. Procedia Manuf.
22, 215–220 (2018)
3. A. Öchsner, Computational Statics and Dynamics: An Introduction Based on the Finite Element
Method (Springer, Singapore, 2016)
4. S. Vlase, P.P. Teodorescu, Elasto-dynamics of a solid with a general “rigid” motion using FEM
model part I. Theor. Approach. Rom. J. Phys. 58(7–8), 872–881 (2013)
5. S. Vlase, M. Marin, A. Öchsner, et al., Motion equation for a flexible one-dimensional element
used in the dynamical analysis of a multibody system. Continuum Mech. Thermodyn. 31, 715
(2019). https://doi.org/10.1007/s00161-018-0722-y
6. A.G. Erdman, G.N. Sandor, A. Oakberg, A general method for kineto-elastodynamic analysis
and synthesis of mechanisms. J. Eng. Ind. ASME Trans. 94(4), 1193–1203 (1972)
7. J. Gerstmayr, J. Schberl, A 3D finite element method for flexible multibody systems. Multibody
Syst. Dyn. 15(4), 305–320 (2006)
8. B. Simeon, On lagrange multipliers in flexible multibody dynamic. Comput. Methods Appl.
Mech. Eng. 195(50–51), 6993–7005 (2006)
9. S. Vlase, Dynamical response of a multibody system with flexible element with a general threedimensional motion. Rom. J. Phys. 57(3–4), 676–693 (2012)