本文以內涵時間塑性理論依照Kang 等人對304 不鏽鋼於室溫298K，
應變率 之單軸循環拉伸數據為對象，以核心函數建立在定溫不同應變振幅
下穩態循環應力-應變曲線，決定出拉伸應力-應變曲線及材料函數在定應變振幅 使用循環應變下之增量型式內涵時間本構方程式，計算出在循環應變振幅大帄均應變為0%、3％、5%、7％、10%、15％之應力振幅反應，並與實驗數據預測結果相當吻合，且利用內涵時間塑性理論可得其平均應力隨循環圈數增加而鬆弛至幾乎為零情形。
利用循環應力下之增量型式內涵時間本構方程式求得定帄均應力
m σ =10MPa 下循環應力a σ =260,280,300,350(MPa)衍生之蠕變，本文提議蠕變率對循環圈數方程式以 σ =350(MPa)為基準可推得一通式預測其他應力振幅下對應之蠕變值與實驗數據比較，其結果十分接近。

On the basis of Endochronic plasticity, this thesis integrates the experimental data from Kang's uniaxial cyclic tensile data which uses 304 stainless steel at room temperature to determine the kernel function and then to establish the steady-state cyclic stress - strain curve under different strain amplitudes. After these, the material function corresponding to the tensile stress - strain curves can be determined.
The Incremental form of Endochronic plasticity under cyclic straining is employed to calculate the values of stress amplitude under constant strain amplitude 0.5% with varied mean strains ( 0%, 3%, 5 %, 7%, 10%,15%).The results computed can predict those values of stress amplitude under
large mean strain condition very well, the computational results can also find that cyclic mean stress decreases to almost zero as the number of cycles increased.
The Incremental form of Endochronic plasticity under cyclic stressing is also applied to investigate the ratcheting mean strain under m σ =10MPa with varied stress amplitudes a σ =260,280,300,350(MPa) .Based on ratcheting strain data under a m σ =350,，a ratcheting rate equation is proposed to predict the values of ratcheting of all loading conditions. The results computed are very close to the experiment data.

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