I am getting the following error message when analyzing my model
***ERROR***MATERIAL GROUP AND EXPLICIT CONSTANT SPECIFICATION CANNOT BE USED TOGETHER
EITHER USE MATERIAL GROUP NAME OR USE E/POI/DENSITY/ALPHA/G
TO ASSIGN CONSTANT TO MEMBERS/PLATES/SOLIDS.
Can you please suggest what could be causing this ?
An older way of assigning material to the structural members was by specifying the E, Density etc. under the CONSTANTS command and directly assigning to the members as shown next
UNIT INCH KIP CONSTANTS E 29000 ALL DENSITY 0.283E-3 ALL POISSON 0.3 ALL
This has however been replaced by a new way for material assignment where a material is defined first and then the material is assigned under the CONSTANTS as shown next
UNIT INCH KIP DEFINE MATERIAL START ISOTROPIC MATERIAL1 E 29000 POISSON 0.3 DENSITY 0.000283 END DEFINE MATERIAL
CONSTANTS MATERIAL MATERIAL1 ALL
Both are acceptable approaches but one cannot have a mix of the two. If part of the assignment is done using the first method and part using the second method, the above error message is generated. So to avoid getting the error, use one or the other.