Questions tagged [lagrange-multiplier]
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3
questions
-1
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Identifying Noetherian symmetries from general Lie symmetries of a differential equation
I know the Lie symmetry group of the harmonic oscillator differential equation from the literature. It is an 8 parameter Lie group.
5 of these generators generate Noether symmetry:
$$G_1=\sin(2t)\frac{...
3
votes
1answer
76 views
Applying displacement control loading using lagrange multipliers in the material non-linear finite element method
Hi I am trying to implement a simple plasticity based finite element code. I am not clear how to set up displacement control applied through Lagrange multipliers. In case of a linear problem, I did ...
1
vote
2answers
90 views
inclined/general Dirichlet boundary conditions
For simpilcity, consider a single quad linear elasticity finite element in 2D. The Dirichlet boundary conditions on node 1 and node 2 are easy to implement and can be handled in the standard way. ...
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