BULETINUL INSTITUTULUI POLITEHNIC DIN IAŞI - Universitatea ...

224 Dănuț Zahariea and Marius Stachie
3. Comparative Analysis
After a preliminary analysis, the clamped end of the bimetallic strip has
been identified as being critical in terms of stresses. In order to improve the
computational process the local changing of the mesh parameters at the clamped
end is required. Thus, for the critical area the “Size” mesh parameter will be
0.25. The global mesh parameters are „Size”=1 and „Sag”=0.5.
The first set of comparative analyses is determining how the width of the
beams influences the behavior of the bimetallic strip. Thus, for every
combination of materials changing the width of the beams and maintaining
constant the other parameters were obtained the numerical values for maximum
deflection (Fig. 3a) and for the von Misses stress on the active layer (Fig. 3b),
as well as for the passive layer (Fig. 3c).
a
b c
Fig. 3 – The influence of the width of the beams:
a – maximum deflection; b – von Misses stress for active layer;
c – von Misses stress for passive layer.
The second set of comparative analyses is determining how the length of the
beams influences the behavior of the bimetallic strip. Thus, for every
combination of materials changing the length of the beams and maintaining
constant the other parameters were obtained the numerical values for maximum