Vibration Analysis and Optimization of a Rectangular Plate with Flanging Hyperellipse Cutout

Table 6

Influence of on the first two frequencies of clamped-free plate.

η	Cutout shape		Natural frequency (Hz)
			f1	f2
1.5		0.101	8.8301	27.842
2.0		0.116	8.8815	27.399
2.5		0.125	8.9092	27.134
3.0		0.131	8.9252	26.949
3.5		0.135	8.9357	26.815
4.0		0.137	8.9425	26.713
4.5		0.139	8.9474	26.634
5.0		0.141	8.9507	26.567