Figure 2: Mechanical analysis and simulations.
From: Super-elastic and fatigue resistant carbon material with lamellar multi-arch microstructure
(a) Microstructure of C–G monolith, showing randomly distributed bridge ligaments (marked in red dotted lines) linking adjacent lamellas. Scale bar, 20 μm. (b) The true material strain (von Mises total strain) profiles of cylindrical shell under large geometry deformation. (c) Schematic cross-section view of cylindrical shell mode under compression by a rigid plane. (d) Compression stresses of bulk C–G monoliths with different lamella thickness (blue) and single cylindrical thin-shell mode with different shell thickness (red). (e) Compression stresses of bulk C–G monoliths with different shrinkage (blue) and single cylindrical thin-shell mode with different radius (red). CCS–CGO represents the concentration of CS and GO in the initial CS–GO composite suspensions for fabricating the C–G monoliths. (f) Schematic diagram of two opposite cylindrical shells with offset distance Δx compressed by a rigid plane. (g) Simulated stress–strain curve based on two opposite cylindrical shells with offset distance Δx=0.4R in a compress-release cycle. (h) The elastic strain energy density profiles of cylindrical shell when the strain equal to 20% in compression and release processes (g), respectively. All error bars represent the s.d. of at least six replicate measurements.
