Topic: element jacobian
hello..im using 2D engineering atena.demo version.
1) i would like to ask. im using 0.1700 as my element size for concrete and it pass to mesh. but when i tried to run the result it failed.
CCFEModelExc: Negative or zero value of element jacobian.
-9.11414e-005, in element id:28, group id: 1, name :Quads Macroelement No 1,Source line 285 File C:\Atenav5\sources\include\CCIsoEement\calculate_element.h
2) i tried to run result for beam with square opening of 150x150mm located near support. I applied until 60 analysis steps. was it logic if i get -1.496E-01 MN for load?? it is the highest load i get