Triangular thick plate stiffness matrix transformation

by Ronankeating
Tags: matrix, plate, stiffness, transformation, triangular
Ronankeating is offline
Feb14-12, 08:58 AM
P: 64
Hi community member,

Regarding the book that I'm reading original writer has used Ni = ai + bi*x + ci*y shape function for the formulation of stiffness matrix for thick triangular plates.

The writer has not mentioned in the article that the resulting stiffness matrix is required to be transformed to global coordinates. What arised my suspicion was, in the illustrations local 1-2 edge of triangle is always aligned to global X-axis. Is it coincidental or "must" to perform the transformation to that specific shape function?

If transformation is required at all to match the exact illustrations, how should be performed, I mean how to choose the base point for rotation, rotation around any arbitrary vertex will work ?

Best Regards,
Phys.Org News Partner Science news on
Better thermal-imaging lens from waste sulfur
Hackathon team's GoogolPlex gives Siri extra powers
Bright points in Sun's atmosphere mark patterns deep in its interior
Ronankeating is offline
Feb15-12, 05:30 AM
P: 64
Any comment will be appreciated!

Register to reply

Related Discussions
Stiffness matrix of bending plate Materials & Chemical Engineering 4
Hydrostatic pressure on triangular plate Calculus & Beyond Homework 5
Boundary Value Problem , triangular plate Differential Equations 0
stiffness matrix fea plate element Mechanical Engineering 2
Stiffness Influence Coefficient Fea For Plate Engineering Systems & Design 1