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abaqus分析過(guò)程中出現(xiàn)in keyword *ELSET, file "change.inp", line 18196: Period cannot be used within set, surface, orientation, instance, and assembly names in a model defined in terms of an assembly of parts。請(qǐng)問(wèn)是什么原因？要怎么進(jìn)行處理？我運(yùn)用HyperMesh軟件進(jìn)行網(wǎng)格劃分并賦予材料等其他操作，最后導(dǎo)入abaqus直接分析，出現(xiàn)上述錯(cuò)誤，請(qǐng)教？急
