XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX''"> 2D and 3D Materials
2D Materials
1. 
,
, and
terms are used - thermal conductivity is a 2x2 matrix.
2. Used for 2D shells and axis-symmetric solids.
3. Material Orientation is relative to the element coordinate system.
By default,
is oriented along the line connecting node1 and node2 for the quad or tri element. If the material angle is defined, the material
direction will rotate an angle relative to the element X direction. Alternately, The X-axis unit vector of the material coordinate system is projected onto the element to do what exactly the same (unless the vector is normal to the element, then it is an error). More details will be introduced in 2D Property
In 2D Orthotropic material,
means
or
.
is the conductivity along the X-direction in a rectangular coordinate system.
is the conductivity along the radial direction in cylindrical or spherical coordinates.
refers to the Y rectangular coordinate or T in rectangular or cylindrical coordinates.
3D Materials
1. All 6 terms are used – thermal conductivity is a 3x3 matrix.
2. Used for solid elements.