Title
A New Family of Mixed Finite Elements for Elasticity: A Robust Computational Method for Mechanical Problems,Used
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Applications from engineering sciences, medicine, and other fields demand computational simulations of mechanical problems to predict deformations and stress fields. In a mathematical framework, this leads to partial differential equations which can be effectively treated by the finite element method. State of the art are the primal method using continuous displacements, HellingerReissner and weak symmetry mixed methods. However, all of these methods have their drawbacks, such as locking effects for thin structures or nearly incompressible materials, or high computational complexity. In this work, the TDNNS (TangentialDisplacementNormalNormalStress) method is introduced, which overcomes all above difficulties. Here, the displacement is sought in the Sobolev space H(curl), ensuring tangential continuity of the displacement vector. The stresses lie in the newly introduced, normalnormal continuous space H(divdiv). The variational formulation is analyzed thoroughly. A finite element scheme of arbitrary order is presented, stability and optimal orders of approximation are shown. Also, the method is robust when applied to nearly incompressible materials or thin structures.
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Shipping & Returns
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We ship your order within 2–3 business days for USA deliveries and 5–8 business days for international shipments. Once your package has been dispatched from our warehouse, you'll receive an email confirmation with a tracking number, allowing you to track the status of your delivery.
Returns
To facilitate a smooth return process, a Return Authorization (RA) Number is required for all returns. Returns without a valid RA number will be declined and may incur additional fees. You can request an RA number within 15 days of the original delivery date. For more details, please refer to our Return & Refund Policy page.
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Warranty
We provide a 2-year limited warranty, from the date of purchase for all our products.
If you believe you have received a defective product, or are experiencing any problems with your product, please contact us.
This warranty strictly does not cover damages that arose from negligence, misuse, wear and tear, or not in accordance with product instructions (dropping the product, etc.).
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