5. TOOLS

CHAPTER 5 "TOOLS" 27 Finally, it should be mentioned that new control messages have been created to prevent uncontrolled changes to members' degrees of freedom, resulting in errors and the analysis not running. All of the following deterrents lead (not always) to errors in the analysis). The cases with corresponding messages are : - N at both ends or Vy at both ends or Vz at both ends or Mx at both ends. - Member instability (number). Release of (N) (Vy) (Vz) (Mx) of both limbs is not allowed. - My at both ends and Vz at one of two ends or Mz at both ends and Vy at one of the two ends. - Member instability (number). When (My) (Mz) is released at both ends, (Vz) (Vy) is not allowed to be released at either end. OBSERVATION: Based on above messages, the initial degrees of freedom were adjusted to the cross bars of the smith model and the wall fill. Generally where the program used bifacial or axial-only members from the outset, only My and Mz at both ends are freed.