49. 如右圖所示之封閉薄壁圓筒壓力容器,管壁厚度t=2 cm,內半徑r=50 cm,承受均勻內壓力p=100 N/cm2,試問其環向應力σ1為何?
50. 承上題,其軸向應力σ2為何?(A) 1,250 N/cm2(B) 2,500 N/cm2(C) 3,600 N/cm2(D) 5,000 N/cm2