Stress Type - CAESAR II - Help

CAESAR II Users Guide

Language
English
Product
CAESAR II
Search by Category
Help
CAESAR II Version
12

Displays the stress types. The stress type applies to the load cases. It defines how the element stresses and allowables are computed. The available stress types are:

OPE

Operating case. For B31.1 and B31.3 (and similar codes) this case is not a code compliance case. The software does not report allowable stresses.

SUS

Sustained case.

EXP

Expansion case.

OCC

Occasional case.

FAT

Fatigue case.

You must also specify the number of Load Cycles for load cases with a FAT stress type.

HGR

Spring hanger design case. These are load cases that CAESAR II uses internally to design and select spring hangers. Results are not available for these cases.

HYD

Hydro test case. Select hanger status. For a hydrotest case, the default hanger status is rigid or locked.

CRP

Creep case. Code standards such as EN-13480 define a creep stress range for operating conditions, which is defined by the life of the material. In CAESAR II, CRP is a scalar combination of one SUS case and one EXP case. The software sets Output Type to Stress.

CAESAR II calculates CRP stresses according to EN-13480. If you specify additional load multipliers, the software applies these as additional scale factors. Other codes also use the EN-13480 method. For more information, see Creep Loading.

  • You must manually add a CRP case.

  • The default combination method is Scalar. You can also set Combination Method to MAX.

K1P

KHK Level 1 (seismic code) primary longitudinal stress for the HPGSL and JPI piping codes. The longitudinal stress is due to pressure, weight, and design seismic force.

The software treats this stress type as OCC for other piping codes.

K1SR

KHK Level 1 (seismic code) secondary cyclic stress range for the HPGSL and JPI piping codes. The cyclic stress range is due to design force and support movement.

The software treats this stress type as EXP for other piping codes.

K2P

KHK Level 2 (seismic code) primary longitudinal stress for the HPGSL and JPI piping codes. The longitudinal stress is due to internal pressure, weight, seismic force, and response displacement.

The software treats this stress type as OCC for other piping codes.

K2SA

KHK Level 2 (seismic code) secondary cyclic stress amplitude for the HPGSL and JPI piping codes. The cyclic stress amplitude is due to seismic force and response displacement.

The software treats this stress type as EXP for other piping codes.

K2SR

KHK Level 2 (seismic code) secondary cyclic stress range for the HPGSL and JPI piping codes. The cyclic stress range is due to seismic force and response displacement.

The software treats this stress type as EXP for other piping codes.

K2L

KHK Level 2 (seismic code) liquefaction for the HPGSL and JPI piping codes. Liquefaction is the angular displacement corresponding to a maximum equivalent plastic strain of 5% (in degrees).

The software treats this stress type as EXP for other piping codes.

LMST

For DNV 2017, you can only use the LMST limit state for combined load cases where local buckling for the combined loading criteria is calculated. For more information, see section 5.4.6 of DNVGL-ST-F101.