Ductile failure of flat plates containing two through-wall cracks: Experimental investigation and numerical modeling

Investigating effective yield surface of porous metals exhibit different hardening behaviors by cell models with randomly distributed spherical voids

“…where f growth is the void volume fraction from growth and ε pl kk is the hydrostatic component of plastic strain. Both the nucleation and growth of voids contribute to the development of void volume fraction, as shown in Equation (5).…”

“…Damage mechanics overcomes the gap between classical fracture mechanics and elastoplastic mechanics and provides an effective approach in failure predictions on both cracked and uncracked bodies. [2][3][4][5] Meso-damage mechanics is a combination of macro and micro methods. Compared with micro-damage mechanics, it omits the details of physical processes that specifically investigate the changes in microstructures and eliminates the tedious calculations of statistical physics, while it endows damage with a more realistic physical process than macro-damage mechanics and is more consistent with the mechanisms of nucleation, growth, and coalescence of voids in ductile metals.…”

“…Compared with classical fracture mechanics, which is only applicable to the failure prediction of cracked bodies, the damage mechanics, which develops on the theories of physics, material mechanics, and continuum mechanics, not only well describes the physical basis of ductile damage but also studies the entire damage process until macroscopic cracks appear. Damage mechanics overcomes the gap between classical fracture mechanics and elastoplastic mechanics and provides an effective approach in failure predictions on both cracked and uncracked bodies 2–5 . Meso‐damage mechanics is a combination of macro and micro methods.…”