Study on the Stress–Strain Relationships and Deterioration Modes of HTPB Propellant with Prefabricated Cracks

Figure 4

Stress–strain relationships corresponding to various strain rates.

(a) Stress–strain relationship for the 2 mm/min

(b) Stress–strain relationship for the 10 mm/min

(c) Stress–strain relationship for the 500 mm/min