岩土问题求教
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《abaqus在岩土工程中的应用》中的隧道开挖案例分析，按着步骤来的，警告信息提示：in keyword *INITIALCONDITIONS, file "Job-3.inp", line 1922: Unknown part instance element set SOIL.ALL
in keyword *MODELCHANGE, file "Job-3.inp", line 1955: Unknown assembly set SOIL
in keyword *MODELCHANGE, file "Job-3.inp", line 1955: Unknown assembly set REMOVE
An initial condition has been specified on element set assembly_soil_all - this element set is not active in the model
Element set assembly_soil has not been defined
Element set assembly_remove has not been defined
请教各位大神是哪一步出问题了？谢谢！
in keyword *MODELCHANGE, file "Job-3.inp", line 1955: Unknown assembly set SOIL
in keyword *MODELCHANGE, file "Job-3.inp", line 1955: Unknown assembly set REMOVE
An initial condition has been specified on element set assembly_soil_all - this element set is not active in the model
Element set assembly_soil has not been defined
Element set assembly_remove has not been defined
请教各位大神是哪一步出问题了？谢谢！
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我是菜鸟，按着书上步骤来的，也不知道怎么修改。创建part时，用tools/set创建的两个集合，但不知道怎么定义，书上也没有，方便加个Q吗？