Flat cap head material, cover head test http://www.hebftc0.com/ phone 0317-8210122, mobile phone 13722724665 flat cap the head factory finite element analysis of pressure vessel analysis of how to operate a finite element analysis model 1.1 hemispherical head, and hemispherical head with two bearings, three-dimensional model is shown in Figure 1. Model parameters: within a radius of 1 965 mm, the cylinder wall thickness of 56 mm, 1 barrel length of 1 682 mm, spherical head and the cylinder thick head and cylinder materials to are 16MnR.