abaqus在模拟切削时出现如下错误

蒲东pd

The independent variables must be arranged in ascending order
% P4 ]7 H2 g4 v5 oThe independent variables must be arranged in ascending order
Analysis Input File Processor exited with an error.
' r5 b/ x8 P' N7 P0 V3 p独立变量必须按升序排列
+ n1 b  ?4 t" F请问大侠们，应该怎么办
3 p7 ]( |. @' b. b( g" m6 f
% M. r1 A! h; g! U* j: U) M