Computational Technique for Crack Propagation Simulation in Viscoelastic Solid Propellant

Figure 2

Topological operations for element splitting: (a) finding adjacent nodes and elements surrounding the crack tip, (b) locating the element split in front of crack tip, (c) modifying nodes and elements after new crack surface generated, and (d) inserting cohesive element along the crack surface.

(a)

(b)

(c)

(d)