Perform cross-section calculations and NEN-checks
Function ready condition: - if input data table SECTION is tested.
Data missing, recalculate from DF5.
Internal data calculated in design function 5 can not be found. Please set back design function 5 and recalculate from there.
(This error can occur after updating a project from a previous version of the program. If only design function 6 is recalculated after the update, not all required data might be present. )
Num of cross-sec. limited to 'number'
The number of elements mentioned in the SECTION table is limited to 'number', even if individual elements are mentioned more than once in the table (i.e. the number of actual elements to be calculated may be less than the limit).
Please note that the limit for the educational version is 51 elements
Ovalisation is 'value' % of diameter
The ovalisation of an element exceeds 10 % of the diameter.
(An ovalisation exceeding 10% is considered to be very large.)
Calculated stress > allowable stress
One of the calculated normalised stresses in table NENSMAX exceeds 1.
Axial buckling strain > critical one
The calculated maximum axial buckling strain is greater than the critical buckling strain.
Axial torsion strain > critical one
The calculated maximum axial torsion strain is greater than the critical torsion strain.
Did not pass axial buckling check
Did not pass axial buckling check from NEN:
Weak element(s) not calculated
Only WEAK elements have been specified in (a row of) table SECTION.
No elements calculated
Only WEAK elements have been specified in table SECTION.
All elements already calculated
Topload = 0.
(This message is given to indicate that the TOPLOAD specified is zero over (parts of) the pipeline. this may be the real situation, but it is also possible that input of the TOPLOAD table has been omitted erroneously.)
Adjustment of SIX stopped after 100 iterations
In NEN3650 calculations the overall maximum stress intensification factor SIX calculated in DF5 must fit the SXUB1 and SXUBH components calculated in design function 6.2. Bringing those values into agreement was stopped after 100 iterations.
(The SIX used in design function 6.2 will differ from the value reported in design function 5, table “Bend stiffness reduction & stress intensification” [BENDFAC].)
H6304, last changed: 8/8/2019