The Bricard linkages 135
The bifurcation can be avoided should α 23 be greater than π/2 and
.
This only becomes possible when the horizontal bars are replaced by
inclined bars. Figure 6.25 shows such an example in which
and α 12 = α 45 = 3π/2, α 23 = α 56 = 2π/3 and α 34 = α 61 = π/2. As expected no bifurcation is detected in the model. The design retains two- fold symmetry.
Details of the bifurcation analysis and the design involving inclined bars
can be found in Chen and You (2009).
Figure 6.25 The frame without bifurcation.
The bifurcation can be avoided should α 23 be greater than π/2 and
.
This only becomes possible when the horizontal bars are replaced by
inclined bars. Figure 6.25 shows such an example in which
and α 12 = α 45 = 3π/2, α 23 = α 56 = 2π/3 and α 34 = α 61 = π/2. As expected no bifurcation is detected in the model. The design retains two- fold symmetry.
Details of the bifurcation analysis and the design involving inclined bars
can be found in Chen and You (2009).
Figure 6.25 The frame without bifurcation.