What problems we have to face for solving a fourth order PDE using FEM?

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Which method is more efficient HDQM or DQM for solving fourth order BVP , how and why?

please give me some reference.

04 May 2017 3,484 0 View

Can anyone help me to apply GDQR on a 4th order boundary value problem?

Imposing boundary condition and calculating weighting coefficient

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Give me some reference to solve 4th order ODE with boundary conditions using HDQ method ?

Harmonic differential quadrature method

31 December 2016 1,792 2 View

What are the differences between Rayleigh-Ritz Method and weak form of Galerkin Method?

While solving any BV problem using this methods.

08 September 2016 5,008 0 View

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Baseline drift in HPLC? What causes this?

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What is the difference between mathematical R^4 space and physical 4D unit space?

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How can I use the cif data obtained from rietveld refinement extracted via gsas2, for microstructural analysis using ETEX software?

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How are iso-frequency contours plotted?

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How to normalize and take the significance of the MTT OD values with 3 replicates for the same cell-line?

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Vikash Pandey

Depends on the respective problem, your formulation, algorithm used, precision of desired results and optimization issues, if any.

Rahul Saini

In weak formulation fourth order will be second order then solution should be C-01 continuous. What are the difficulties for C-01 continuity.

Abdelmalek Zine

No big problems !

Just one thing, instead of Lagrange Elements, you have to use Hermite finite elements which guaranty the $C^1$ condition !

Otherwise, you may use mixed formulation and then you don’t need to satisfy this differentiability condition.

Can you explain mixed formulation?