Special solutions for the ring circular domain with crack surfaces acted on uniform compressive force, linear compressive force and linear shearing force are deduced in polar coordinate employed the eigenfunction expansion technique in the Hamiltonian system of elastic mechanics. Combined with the general solution for the above problems, the analytical solutions for crack tip fields with surfaces acted on the above three kinds of loads are obtained. These solutions offer theoretical basis to construct analytical elements for plastic analysis of crack.

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The experimental result shows that when the discharge time was more than 1.5μs, small crack emerged in the fuses due to mechanical force on the heated fuse, and the metallized layer would be evaporated as the crack became long enough to generate disruptive discharge. When the discharge time was less than 150ns, small crack emerged in the fuses due to the current heat, and the metallized layer would be evaporated as the crack became long enough to generate disruptive discharge.

實驗結(jié)果表明：當(dāng)熔絲的通流時間大于1.5 ms時无码字幕AV一区二区三区蜜芽，電流熱效應(yīng)產(chǎn)生的機(jī)械力使安全膜熔絲的金屬層產(chǎn)生微小裂紋，當(dāng)裂紋達(dá)到一定長度国产精品久久久久免费99，兩端發(fā)生擊穿放電在线无码不卡大黄，金屬層因蒸發(fā)而斷開；當(dāng)熔絲中通過較大的電流時国产一区久久无码，短時間內(nèi)(50 ns)的電流熱效應(yīng)使熔絲金屬層發(fā)生熔化產(chǎn)生裂紋欧美性生活视频高清在线，裂紋兩端發(fā)生擊穿放電，金屬層因蒸發(fā)而斷開久久久久久久国产精品毛片。

The results of conversion show that the serious disc must be rejected because its reliable L-HCCF life is greatly less than an overhaul period. Finally, the load distribution of centrifugal and vibration force on labe is derived. Using two method, load on the crack labe gradually reducing and keeping constant with the crack propagation, a crack propagation analysis of fir-tree slot is carried out, and the calculating L-HCCF crack propagation life of slot on the unload method, which is nearly 3 times longer than that on constant method, is 20 times shorter than the pure low cycle life, and agree well with the experimental's.

最后欧美页，分析了離心力載荷和振動載荷在榫齒上的分布，進(jìn)行了榫槽榫齒的有限元計算亚洲第大簧片视频天堂；提出了樅樹型榫槽的卸載概念老女人特黄毛片高清视频，并按帶裂紋榫齒上的承載隨裂紋增長而逐步減少和始終保持不變兩種處理方法，進(jìn)行了復(fù)合疲勞裂紋擴(kuò)展及其壽命計算影音av，由計算得出卸載下復(fù)合疲勞裂紋擴(kuò)展壽命較單純低周疲勞壽命下降二十多倍A级野外黄色网；按卸載處理的疲勞裂紋擴(kuò)展壽命是按恒載處理的三倍多，前者與試驗吻合韩国A级电影在线，而后者則偏差較大欧美日韩图自拍图片在线观看。