Fig. 1. Three simple mechanical models. (a) Maxwell model; (b) Kelvin model; (c) Burgers model

Fig. 2. Generalized Maxwell model

Fig. 3. Two-dimensional finite element model for microlens array

Fig. 4. Creep relationship of chalcogenide glass Ge23Se67Sb10

Fig. 5. Distributions of equivalent von Mises stress with different microstructural heights when microstructural width is 300 μm. (a) 15 μm; (b) 20 μm; (c) 30 μm; (d) 40 μm; (e) 50 μm; (f) 60 μm; (g) 70 μm; (h) 80 μm; (i) 90 μm

Fig. 6. Variation of equivalent von Mises stress with different microstructural heights when microstructural width is 300 μm

Fig. 7. Variation of equivalent von Mises stress with different microstructural width. (a) 100 μm; (b) 200 μm; (c) 400 μm; (d) 500 μm