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Çó¾ÈThe stress-strain matrix of material 1 is not positive definite,
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The stress-strain matrix of material 1 is not positive definite, which is required for real materials. Being positive definite means that 1.0 - NUXY**2*EX/EY - NUYZ**2*EY/EZ - NUXZ**2*EX/EZ - 2.0*NUXY*NUYZ*NUXZ*EX/EZ must be positive, but is equal to -495237.185. Consider reducing the Poisson's ratios. ÇëÎʸßÊÖÕâÊÇʲôÔÒò£¿²ÄÐÔÊDZðÈËÓùýµÄ£¬Ó¦¸Ã²»»á´í£¬Çó¾È! |
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