Based upon the elasticity theory, a mechanical model for the casing pipe was built and the relationship between residual stress and compression strength was developed by FEM.
The utility model has the advantages of novel structure, high strength, small permanent compression deformation, good elasticity and superior flexibility and is a novel plastic high pressure hose.
该管结构新颖、强度高、永久压缩变形小、弹性好，可挠性优良，适用范围广，是一种新型的塑料高压软管。
3
The method of photo elasticity is discussed in measuring peripheral stress concentration of rectangular ports on the shape shell under the axial compression.