58 problem 8 static thermal stress analysis antype 0

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Mode-frequency Analysis (ANTYPE = 2) Element Type(s): Elastic Shell Elements (SHELL63) Input Listing: vm62.dat Test Case Determine the fundamental frequency of out-of-plane vibration f of a wedge-shaped plate of uniform thickness t, base 2b, and length . Figure 62.1 Wedge Vibration Problem Sketch ANSYS Verification Manual . ANSYS Release 9.0 . 002114 . © SAS IP, Inc. 1–145 VM62 Material Properties E = 30 x 106 psi ρ = 0.000728 lb-sec2/in4 υ=0 Geometric Properties t = 1 in b = 2 in = 16 in Analysis Assumptions and Modeling Notes The problem is solved first using "plate" elements (SHELL63 with bending stiffness only) and then using "shell" elements (SHELL63 with bending and membrane stiffness). Two symmetric areas are created to ensure model symmetry about the plate centerline. Out-of-plane (Z-direction) master degrees of freedom (MDOF) are selected along the plate centerline. Each area is meshed with 4 elements along the X axis and 1 element along the Y axis. Poisson's ratio is assumed to be zero. Results Comparison Target ANSYS Ratio Plate Elements f, Hz 259.16 261.11 1.008 Shell Elements f, Hz...
View Full Document

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.

Ask a homework question - tutors are online