ABAQUS报错：The selected primary variable is not available in the current step/frame.

我按照《ABAQUS岩土工程实例详解》的ex12-6模型建立了一个一模一样的模型，但是却报错“The selected primary variable is not available in the current step/frame.”后来在书中讲解ex12-4中的内容找到了原因：

未定义模型关键词！

操作：Model--Edit Keywords--Model-1会打开一个窗口

在“*User Material, constants=7, unsymm
 0.15,    0.05,     0.3,     1.2, 2.69078, 2.62146,     1.6” 后面点击“add after”

输入：*INITIAL CONDITIONS, TYPE=SOLUTION（回车换行）
part-1-1.soil,1,100,1

之后提交job还是aborted，报错：Error in job 4-2: in keyword *INITIALCONDITIONS, file "4-2.inp", line 85: Unknown part instance element set SET-1.SOIL
Error in job 4-2: AN INITIAL CONDITION HAS BEEN SPECIFIED ON ELEMENT SET ASSEMBLY_SET-1_SOIL - THIS ELEMENT SET IS NOT ACTIVE IN THE MODEL

于是把输入改为：*INITIAL CONDITIONS, TYPE=SOLUTION（回车换行）
set-1,1,100,1

成功