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作业解析 3

N i 次. 次. MPa. 作业解析 3. 某种零件受规则变化的变幅对称交变应力，已知零件的疲劳极限为 19MPa ， N T = 115091 次 ,  a i 、 n T i 、 N i 均列于下表中。 试用迈因纳准则确定零件的寿命。. 350 11 5.6×10 4. 332 80 7.4×10 4.

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作业解析 3

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  1. Ni 次 次 MPa 作业解析3 某种零件受规则变化的变幅对称交变应力，已知零件的疲劳极限为19MPa，NT = 115091次,ai、nTi 、Ni均列于下表中。试用迈因纳准则确定零件的寿命。 350 11 5.6×104 332 80 7.4×104 298 1400 1.3×105 254 13600 2.8×105 201 100000 1.25×106 149 460000 ∞ 96 1400000 ∞ 44 3025000 ∞

  2. Ni 次 MPa 350 11 5.6×104 332 80 7.4×104 298 1400 1.3×105 次 254 13600 2.8×105 201 100000 1.25×106 149 460000 ∞ 96 1400000 ∞ 44 3025000 ∞ 作业解析3 解： 应用Miner准则

  3. 次 作业解析3 解： 应用Miner准则

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