Unformatted text preview: s
a = 1 in
b = 5 in
h = 5 in
t = 0.25 in Loading
σo = 0.5641895 psi Analysis Assumptions and Modeling Notes
The problem is solved first using 3-D solid (SOLID95) and 3-D solid (SOLID45) elements and then using 2-D plane
strain elements (PLANE82). A third solution is performed using 3-D solid (SOLID186) and 3-D solid (SOLID185)
elements. A one-quarter model is used because of symmetry. The macro FRACT is used to create the SOLID95
crack tip elements from the SOLID45 model and SOLID186 crack tip elements from the SOLID185 model using
a weighted midside node position (quarter point location).
In the 3-D analysis, the plane strain condition is achieved by constraining UZ degrees of freedom of all the nodes
(displacements in the Z-direction). Only the back plane of nodes are shown numbered in the enlargements of
the 3-D model. The simpler 2-D model using PLANE82 is created by automatic mesh generation. The KSCON
command is used to create 2-D crack tip elements with nodal singularity.
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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