通過python編寫了和失效判據(jù)對應(yīng)的材料庫，但運行時出現(xiàn)錯誤：STIFFNESS DEFINED BY ENGINEERING CONSTANTS IS NOT PHYSICALLY REASONABLE.  CHECK CHOICE OF POISSON'S RATIOS，泊松比嘗試了好多次都不太對，材料庫見附圖。