在本篇研究當中，將使用一套非線性破壞分析模式，針對纖維加強複合材料疊層板承受雙軸載重作用下，進行材料之破壞預測及分析探討。此非線性破壞分析模式包含三部分：材料破壞前的非線性組成律、預測破壞時機的混合破壞準則以及後破壞分析模式。
對於複材單層板破壞前之非線性行為模擬，係假設材料在軸向及側向均為彈性-塑性行為，而面內剪力則使用非定值剪力參數來描述之。至於破壞時機之判斷，則使用了結合Tsai-Wu破壞準則及最大應力準則之混合破壞準則作依據。最後，在後破壞行為中，對單層板軸向及剪力之行為假設成脆性破壞模式，而側向則採用逐降模式模擬之。
最後，對於該非線性破壞分析模式所預測之結果，將分別與實驗數據及其他分析模式之預測結果做比較，以證明纖維加強複合材料疊層板在雙軸載重作用下，本文所建議之分析模式較為精確且合理。

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