With the aid of perturbation method are solved elasticity problems of two dimensional decagonal quasicrystals with point groups 10mm, 1022, 10 m2 and 10/mmm containing a circular crack.

• 用摄动方法解点群 10 mm,10 2 2 ,10 m2和 10 /mmm十次二维准晶包含一个圆盘状裂纹的弹性三维问题。