Structural and Multidisciplinary Optimization
An optimization approach is presented for enumerating pin-jointed bistable compliant mechanisms. In the first stage, the statically determinate trusses with non-crossing members containing a given set of nodes and some pre-defined members are regarded as minimally rigid framework or a Laman framework, and are enumerated without repetitions by the graph enumeration algorithm. In the second stage, the nodal locations and the cross-sectional areas are optimized under mechanical constraints, where the snapthrough behavior is extensively utilized to produce a pin-jointed bistable compliant mechanism. In the numerical examples, many bistable compliant mechanisms are generated to show the effectiveness of the proposed method. © 2008 Springer-Verlag.
Bistable structure, Compliant mechanism, Minimally rigid framework, Snapthrough
Ohsaki, M.; Katoh, N.; Kinoshita, T.; Tanigawa, S.; Avis, D.; and Streinu, I., "Enumeration of Optimal Pin-Jointed Bistable Compliant Mechanisms with Non-Crossing Members" (2009). Computer Science: Faculty Publications, Smith College, Northampton, MA.