Question

ansys 定义实常数干什么用？

Answer 1

实常数用于描述那些用单元几何形状不能完全确定的几何参数。壳单元通过四边形和三角形定义了壳的表面，实常数用来定义其厚度；而梁单元的实常数相对复杂。主要包括截面积、截面对zz轴、yy轴的惯性短、沿z轴、y轴的厚度(最大应力发生在离轴最远点)等。

Answer 2

单元实常数Real是对所选单元的补充定义，比如你做的梁分析，Real可以定义其梁的面积和惯性矩等；如果你选择的弹簧单元，那么Real可以定义其刚度和阻尼等参数，...
并不是说每个单元都要定义其实常数，看需要了。

Answer 3

某些ELEMENT TYPE，比如杆单元，某些梁单元，还有壳单元，必须靠实常数来描述对像的几何属性值，（杆梁——截面积等，壳——板板等）

Answer 4

Data which are required for the calculation of the element matrix, but which cannot be determined from the node locations or material properties, are input as "real constants." Typical real constants include area, thickness, inner diameter, outer diameter, etc. A basic description of the real constants is given with each element type. The Theory Reference for ANSYS and ANSYS Workbench section describing each element type shows how the real constants are used within the element. The real constants are input with the R command. The real constant values input on the command must correspond to the order indicated in the "Real Constants" list.

这是个ansys软件自带的实常数的作用，你看看有帮助不？