FORMULA OF
TANGENTIAL STRAIN??????????
Answers
Results and Comparison
The mechanical behavior of RTP before the initiation of failure is evaluated by analytical analysis and finite element analysis. The predicted tangential strains, axial strains, and torsion angles are presented in Figure 27.6. The calculated values from the analytical and finite element analysis agree with each other when pressure is lower than 10 MPa. The deviations increase when the internal pressure increases, which may be due to the different boundary conditions and the definition of initial defect used in the finite element model, also they may be due to the assumptions used in the analytical analysis. Although the inner and outer reinforced layers generate a positive and a negative torsion moments, respectively, they are not balanced with each other, as indicated by the existence of torsion angle.
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