菜鸟向大家请教一个关于管道应力校核的问题

小弟刚接触ANSYS,想做一个管道的应力校核分析,
用pipe 16 建模后,定义好热膨胀和施加自重载荷后,得到von mises stress的应力云如下

小现在的问题是想根据asme b31.1校核一次应力和二次应力。
但是给ANSYS的应力中只有剪切、第一主应力、第二主应力、还有von mises等等，能否得到一次应力或二次应力呢？或者哪一个应力项相当于一次应力、二次应力？
建模命令流入下:
/FILNAM,MODAL
/TITLE,Modal Analysis of a pipeline
/PREP7
ET,1,PIPE16
R,1,0.4,0.012, , , ,1000,
RMORE,10,0.2,0.002, ,7900, ,
RMORE, ,
MPTEMP,,,,,,,,
MPTEMP,1,0
MPDATA,EX,1,,2.1e11
MPDATA,PRXY,1,,.3
MPTEMP,,,,,,,,
MPTEMP,1,0
MPDATA,DENS,1,,7900
PUNIT,0
PSPEC,1,,,0.4,0.012,
PFLUID,1000,
PINSUL,10,0.2,
PCORRO,0.002,
POPT,B31.1
PTEMP,20,80,
PPRES,7.5e6,
PDRAG,,,, ,,,, ,Y
! /VIEW,1,1,1,1
BRANCH,0,0,0
RUN,-1,0,0,1, , ,1,
RUN,-1,0,0,1, , ,1,
RUN,-1,0,0,1, , ,1,
RUN,-2,0,0,1, , ,1,
RUN,0,2,0,1, , ,1,
RUN,0,0,0.8,1, , ,1,
RUN,0,0,1,1, , ,1,
RUN,0,0,1.5,1, , ,1,
RUN,0,0,1,1, , ,1,
RUN,0,0,1,1, , ,1,
RUN,0,0,1,1, , ,1,
RUN,2.5,0,0,1, , ,1,
RUN,1.25,0,-0.72,1, , ,1,
RUN,1.25,0,-0.72,1, , ,1,
RUN,0,-2,0,1, , ,1,
BEND,4,5,0.4,2, ,1,
BEND,6,5,0.4,2, ,1,
BEND,11,12,0.4,2, ,1,
BEND,12,13,0.4,2, ,1,
BEND,14,15,0.4,2, ,1,
VALVE,3,0.3,10,1,0.5, , ,
PSPRNG,7,TRAN,1000,,0.5,, ,
PSPRNG,14,TRAN,1000,,0.5,, ,
REDUCE,9,0.15, ,
FINISH
/SOLU
FLST,2,1,1,ORDE,1
FITEM,2,2
D,P51X, , , , , ,UY, , , , ,
FLST,2,1,1,ORDE,1
FITEM,2,4
D,P51X, , , , , ,UY, , , , ,
FLST,2,1,1,ORDE,1
FITEM,2,8
D,P51X, , , , , ,UZ, , , , ,
FLST,2,1,1,ORDE,1
FITEM,2,11
D,P51X, , , , , ,UY, , , , ,
FLST,2,1,1,ORDE,1
FITEM,2,1
D,P51X, , , , , ,ALL, , , , ,
FLST,2,1,1,ORDE,1
FITEM,2,16
D,P51X, , , , , ,ALL, , , , ,
/VIEW,1,1,1,1
FINISH