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help needed,boundary condition of linear buckling of a fixed-fixed beam

Posted Apr 9, 2014, 4:24 a.m. EDT Structural Mechanics Version 4.3 0 Replies

Hao Jiang
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Hello everyone,
I am trying to model the linear buckling of fixed-fixed beam.First of all,I fixed two ends, while the comsol showed "the mass matrix is zero".Then,I fixed one end and prescribed displacement the other end,but the result does not agree with the theory solution.Finally,I add pointwise constraint(vx=0,for the angle of rotation of end is zero),but it is not right,too.
Can anyone help me?

0 Replies Last Post Apr 9, 2014, 4:24 a.m. EDT
COMSOL Moderator

Hello Hao Jiang

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