Thermal-mechanical finite element analysis of evolution of surface cracks during slab rolling
Closure and growth of transverse cracks on slab surface severely affects the quality of rolled products. A finite element (FE)-based modeling on thermal and mechanical behavior of transverse cracks during hot rolling has been carried out using LS-DYNA software. The behavior has been simulated at a range of crack sizes, crack open-angles, friction factor between roll and slab. The maximum compressive and tensile stress at crack tip during rolling, the crack open-angle and the crack height after rolling, and the temperature on crack surface during rolling were analyzed. The mechanism of crack behavior during rolling is discussed.
Please refer to publisher version or contact your library.