search

BriefFiniteElementNet / BriefFiniteElement.Net

BriefFiniteElementDotNET (BFE.NET) is a library for linear-static Finite Element Method (FEM) analysis of solids and structures in .NET
GNU Lesser General Public License v3.0
154 stars 57 forks source link

Hexahedral element ("Brick"). Not fully functioning yet -see GetJMatr… #67

Closed rubsy92 closed 4 years ago

rubsy92 commented 4 years ago

Hexahedral element ("Brick"). Not fully functioning yet -see GetJMatrixAt. Det[J] should give the elements' volume (not the case right now).

epsi1on commented 4 years ago

Are you sure that determinant of J matrix should be equal to element's volume in the hexahedral (brick) element? I was thinking that this is true only in tetrahedral and triangle elements.

rubsy92 commented 4 years ago

Please see http://what-when-how.com/the-finite-element-method/fem-for-3d-solids-finite-element-method-part-2/

Here it states that det[j]=V...

epsi1on commented 4 years ago

Please see http://what-when-how.com/the-finite-element-method/fem-for-3d-solids-finite-element-method-part-2/

Here it states that det[j]=V...

OK, I'll check it...

If the hexahedron is rectangular with dimensions of a x b x c, the determinate of the Jacobian matrix is simply given by 9.54