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[求助]
計算彈性常數(shù)時的問題
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Stress Cij value of value of index index stress strain 1 1 -3.038279 -0.003000 1 1 -3.308576 0.000000 1 1 -3.479875 0.003000 C (gradient) : 73.599333 Error on C : 9.526087 Correlation coeff: 0.991728 Stress intercept : -3.275577 計算彈性常數(shù)時出現(xiàn)上述錯誤時什么原因。并且c11,c22的誤差較大, ============================ Summary of elastic constants ============================ id i j Cij (GPa) 1 1 1 73.59933 +/- 9.526 2 2 2 72.62517 +/- 6.129 3 3 3 78.57400 +/- 5.214 4 4 4 42.68550 +/- 0.143 5 5 5 49.07767 +/- 0.396 我用的castep計算,quality:fine Functional:GGA PBE number of steps for each strain :3 請大師們多指教。 |
金蟲 (小有名氣)
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