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Ansys Learning Forum › Forums › AIS China › 结构 › Random vibration分析中应力结果的解释 › Reply To: Random vibration分析中应力结果的解释

September 27, 2024 at 7:43 am
Haifeng Niu
Ansys Employee

随机振动分析完成后，结果中提取的等效应力，程序默认输出是1 sigma下的等效应力.

以100MPa（举例），是指得到的等效应力值满足均值为0的高斯分布，其值低于100MPa的概率为68.3%。如果取2sigma值，那么等效应力值低于200MPa的概率为就是95.45%.