抄録
A theoretical study has been made of the impact fracture of the homogeneous, stringy and Maxwellian material, introducing a concept of limiting elongation.
The theoretical results show that there are three types of fracture of the impacted material, i.e. (1) Instantaneous brittle fracture. (2) Retarded brittle fracture. (3) Ductile fracture. Moreover, it is proved that “instantaneous brittle fracture” is intrinsic by nature, and this will appeares under the follwing condition, where, σM, υ, E are impact strength, impact speed and Young's modulus of the material, respectively, while V is the propagation speed of the shock wave in it.
