[問題] workbench自然頻率問題
各位版上大大好
題目是ㄧ塊方形鋁板40*40*1cm
使用workbench分析自然頻率時,
前面總會有幾個很小的數值
ex. 0 , 0 , 0 , 1.956*10^-3 , 2.7909*10^-3 ,
2.98*10^-3 , 201.33 , 296.18....
但若有設定fix support的話又不會出現,
請問該如何解釋那些很小的頻率?
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推
05/28 00:21, , 1F
05/28 00:21, 1F
→
05/29 12:06, , 2F
05/29 12:06, 2F
→
05/29 14:25, , 3F
05/29 14:25, 3F
→
05/29 14:25, , 4F
05/29 14:25, 4F
推
05/29 22:57, , 5F
05/29 22:57, 5F
→
05/29 22:58, , 6F
05/29 22:58, 6F
→
05/29 22:59, , 7F
05/29 22:59, 7F
→
05/29 22:59, , 8F
05/29 22:59, 8F
→
05/29 23:01, , 9F
05/29 23:01, 9F
→
05/29 23:01, , 10F
05/29 23:01, 10F
→
05/29 23:01, , 11F
05/29 23:01, 11F
→
05/31 20:35, , 12F
05/31 20:35, 12F
推
06/12 01:42, , 13F
06/12 01:42, 13F
→
06/12 01:42, , 14F
06/12 01:42, 14F
推
06/14 23:37, , 15F
06/14 23:37, 15F