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Unformatted text preview: n Mises) stress, σeff, at the same locations for a pressure, pult, which brings the entire cylinder wall into a state
of plastic flow. Figure 38.1 Thick-Walled Cylinder Problem Sketch ANSYS Verification Manual . ANSYS Release 9.0 . 002114 . © SAS IP, Inc. 1–93 VM38
E = 30 x 106 psi
σyp = 30,000 psi
υ = 0.3 Geometric Properties
a = 4 in
b = 8 in Loading
pel = 12,990 psi
pult = 24,011 psi Analysis Assumptions and Modeling Notes
The theory available for this problem is based on the Tresca (maximum shear) yield criterion while ANSYS uses
T =σ 3 yp
the von Mises yield criterion. The applied pult pressure is calculated from the Tresca theory by using y
This procedure is sufficient to calculate approximate loads but the resulting nonlinear stress components should
not be compared directly. The problem is solved first using axisymmetric solid elements (PLANE42) and then using 3-D solid elements
(SOLID45). Since the problem is axisymmetric, only a small sector (5°) is modeled with SOLID45. In or...
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This note was uploaded on 12/09/2010 for the course DEPARTMENT E301 taught by Professor Kulasinghe during the Spring '09 term at University of Peradeniya.
- Spring '09
- The Land