2011-06-012024-05-18https://scholars.lib.ntu.edu.tw/handle/123456789/703156摘要：本計畫擬撰寫搭配商業用有限元素分析軟體之使用者材料副程式，描述高分子材料行為之組成律與其失效預測模型，藉以檢視高分子材料承受複雜負荷條件下之破裂表現。組成模型所需參數則藉由與試片承受單軸拉伸/壓縮實驗所得之力量/位移(應力/應變)曲線擬合獲得。自行設計製造試片所需之射出成型模具與實驗所需之特殊夾治具，進行試片承受多軸負荷實驗直至斷裂，並與相對應模擬結果進行比對驗證。<br> Abstract: A user’s material subroutine of the finite element commercial package is coded to describe the constitutive law and the failure prediction model of crystalline polymer materials in the current study. The developed constitutive model is adopted to investigate the fracture/rupture behavior of polymers, and the corresponding required parameters in the model can be evaluated using measurements of the standard specimen under uniaxial tensile test. An injection-molding mold for notched or butterfly-shaped specimens and the specific fixture for the experiments are designed and fabricated as well. Measurements of the specimen under multiaxial loading conditions are then compared with the associated simulation results.高分子材料組成律失效模型有限元素分析constitutive model of polymersfailure criterionfinite element analysis