The unit cell of the lattice shown on the right has:

a. A mechanism

b. An optimally rigid structure, free of self-stresses

c. An over-constrained structure, with potential for self-stress.

Transcribed Image Text:

12 bars that are unique to the cell 24 bars that are shared between 2 cells } thus 24 bars, b, per cell 6 joints each shared between 2 cells 8 joints each shared between 4 cell } thus 6 joints, j, per cell