A criterion for dynamic ductile fracture initiation of tensile mode

Dynamic behavior of a material is essential in applications such as collision, explosion, ballistic impact, high-speed machining, and metal forming. As impact loadings, well accidental or malicious explosions, may impose high loading rates to engineering structures, estimating the dynamic response accurately crucial. Therefore, an analytical strain rate-dependent criterion on ductile fracture initiation developed at continuum scale by further developing energy balance concept. The based modeling release rates, critical state reached when rate change fractured unfractured states becomes equal. formulation introduces length property that function temperature. implemented into two example applications, aluminum alloy titanium alloy, whose experimental data are obtained from open literature. Fracture loci these alloys various determined. results agree with reported