378
S. Vlase et al.
Fig. 3 Eigenmodes of vibration of the whole chamber (modes 5, 23, 24)
is well defined, it is possible to avoid unwanted effects and to modify the eigenfrequency by acting on the geometry and elasticity of the significant, highlighted parts
in the corresponding eigenmode.
3 Clamping Lever Analysis
A study of the lever with the target is imposed due to the elasticity of this element. A
finite element analysis to study the eigenvalues and eigenvectors are made. In Fig. 4,
the lever into the interaction chamber and alone is presented.
The first ten eigenmodes of vibration of the fixing device are presented below
(Fig. 5a–e). The stiffness of the rest of the structure over the clamping device is large
and the influence of the target bar motion on the rest of the elastic structure is small.
At least for the small eigenfrequencies, an independent study of the fixing device is
warranted.
The rigidity of this device, compared to that of the rest of the interaction chamber,
is small and, as a result, it is expected that in the case of external excitations this
device will have vibrations with high amplitudes. It is, therefore, useful to make
Fig. 4 Eigenmodes of vibration of the whole chamber (modes 12, 13, 14)
S. Vlase et al.
Fig. 3 Eigenmodes of vibration of the whole chamber (modes 5, 23, 24)
is well defined, it is possible to avoid unwanted effects and to modify the eigenfrequency by acting on the geometry and elasticity of the significant, highlighted parts
in the corresponding eigenmode.
3 Clamping Lever Analysis
A study of the lever with the target is imposed due to the elasticity of this element. A
finite element analysis to study the eigenvalues and eigenvectors are made. In Fig. 4,
the lever into the interaction chamber and alone is presented.
The first ten eigenmodes of vibration of the fixing device are presented below
(Fig. 5a–e). The stiffness of the rest of the structure over the clamping device is large
and the influence of the target bar motion on the rest of the elastic structure is small.
At least for the small eigenfrequencies, an independent study of the fixing device is
warranted.
The rigidity of this device, compared to that of the rest of the interaction chamber,
is small and, as a result, it is expected that in the case of external excitations this
device will have vibrations with high amplitudes. It is, therefore, useful to make
Fig. 4 Eigenmodes of vibration of the whole chamber (modes 12, 13, 14)