TY - RPRT TI - An Enhanced Virtual Crack Closure Technique for Stress Intensity Factor Calculation along Arbitrary Crack Fronts and the Application in Hydraulic Fracturing Simulation AU - Wu, Hui AU - Settgast, Randolph R. AU - Fu, Pengcheng AU - Morris, Joseph P. PY - 2021 DO - 10.1007/s00603-021-02428-9 UR - https://www.osti.gov/biblio/1818386 ID - 1818386 ER -