GFRP筋混凝土梁，低周疲劳荷载下，XFEM裂纹扩展水平集函数

***ERROR: THE SYSTEM ERROR IN STD_FINDCUTSHAPE3D8_XFEM -- NODAL LEVEL SET

           VALUES MIGHT NOT BE CORRECT FOR ELEMENT 184 INSTANCE BEAM-1, ITS

           PHILSM ARE 9.3258, -28.876, 8.2612, -12.191, -12.430, -31.176,

           7.2244, -13.228.