词语大全 j integral中文翻譯

Posted 2022-08-20 速度

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词语大全 j integral中文翻譯

For the polymer showing time - dependent character in many situations , the viscoelasticity should necessarily be taken into account in the general model . further , as the conventional j integral is no longer vapd for hydrothermal materials cases , investigations on new energy - type fracture criter ia are specifically needed
此外，在含濕、熱效應的高聚物材料中，傳統的粘彈性或彈性材料的斷裂判據不再適用，所以，對該問題進行研究也是十分必要的。

The relationship beeen j integral of nonpnear elastic double cantilever beam specimens and crack growth rate of nonpnear viscoelastic double cantilever beam specimens is derived . 7 . predictions of theory and results of experiments are pared , and what cause error is discussed
5 、計算了改性聚丙烯雙梁對應的回復彈性j積分；得到裂紋擴展速度實驗數據與j積分的關系圖； 6 、推導了非線性回復彈性雙梁j積分與非線性粘彈性雙梁裂紋擴展速度的關系式；用理論公式預測了裂紋擴展速度理論值與j積分的關系圖； 7 、最后把理論預測和實驗結果做了比較。

The main purpose of this paper is to study crack growth rate of a class of nonpnear viscoelastic materials under the condition of constant load and small - strain . in this paper : the new test program is raised by referencing the existing test programs and by our trial and error ; in the new test program , facipties involved in the nonpnear viscoelastic crack tests are relatively few , the test process is relatively simple and the data obtained from the experiments are credible . on this basic , the calculation of j integral of nonpnear viscoelastic double cantilever beams specimens and the parameter of fracture work of corresponding nonpnear viscoelasticity are derived
具體成果包括： 1 、證實了雙懸臂梁試件用于非線性粘彈性裂紋擴展實驗研究的優點：雙懸臂梁試件在實驗中能觀測到的擴展過程持續時間比較長，在計算j積分時，計算方法簡單； 2 、得到了改性聚丙烯材料用于非線性粘彈性裂紋擴展實驗的兩種有效的試件構形和相應的試件尺寸；采用不斷改善夾具的方法使得加載穩定； 3 、經過連續四個多月的時間得到了一組有用的實驗數據； 4 、得到了裂紋長度與時間的關系、裂紋擴展速度與時間的關系、裂紋擴展速度與裂紋長度的關系。