潛在裂紋 的英文怎麼說
中文拼音 [qiánzàilièwén]
潛在裂紋
英文
potential crack-
The numerical simulation technique is used to study on the fatigue properties of submarine with high strength steel. the numerical simulation model is established and its feasibility is validated. at last, the possibility of establishing a kind of calculation and design methods of fatigue life in submarine structure is primarily analyzed
本文把疲勞裂紋閉合模型通過切片合成法引入到潛艇結構疲勞強度計算上來，建立了潛艇結構疲勞強度的數字模擬計算的數學模型，分析該方法在潛艇結構疲勞強度計算上應用的可行性，為建立一套計算和設計潛艇結構疲勞強度的方法作了初步的探討。The opening stress and the life of crack growth is calculated and compared with the test results and the experience formula. the feasibility of the newman theory of opening stress used in the high strength steel is validated. then through the slice synthesis method, the three dimension surface crack of the weld joint of cone - cylinder is decomposed into many plane through cracks
本文將基於裂紋閉合現象建立的帶狀屈服模型，用在平面貫穿裂紋中，計算此時的裂紋張開應力和疲勞裂紋擴展壽命，與試驗結果和經驗公式比較，驗證newman裂紋張開應力理論在高強鋼中的可行性；然後，用切片合成法，把潛艇結構凸錐柱結合殼焊縫處的三維表面裂紋分解成平面貫穿裂紋，用帶狀屈服模型的理論來分析平面貫穿裂紋，得到裂紋沿深度方向的擴展速率，進而得到潛艇結構的疲勞壽命。
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