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british sci floor vibe design guide loads question
hopefully someone from across the pond can help with this question. it's with regard to the 2007 sci design guide: floor vibrations, a new approach.
table 3.1 gives the design fourier coefficients for walking. presumably, these come from the measurements by kerr and some others, as shown by willford and colleagues in their 2006 and 2007 papers.
in table 3.1, shouldn't fp be h*fp where h = the harmonic number and fp = the pacing frequency? in their current forms, the equations give forces that seem very low for the 3rd and 4th harmonics. the first harmonic, of course, has h=1 and the second harmonic regression line is flatter, so doesn't seem very severely affected. with h*fp, the 3rd and 4th harmonic loads are similar to fig. 1 of the 2007 willford et al. paper.

2009-09-07, 05:18 PM	#1
huangyhg 超级版主注册日期: 04-03 帖子: 18592 精华: 36 现金: 249466 标准币资产: 1080358888 标准币	british sci floor vibe design guide loads question british sci floor vibe design guide loads question hopefully someone from across the pond can help with this question. it's with regard to the 2007 sci design guide: floor vibrations, a new approach. table 3.1 gives the design fourier coefficients for walking. presumably, these come from the measurements by kerr and some others, as shown by willford and colleagues in their 2006 and 2007 papers. in table 3.1, shouldn't fp be hfp where h = the harmonic number and fp = the pacing frequency? in their current forms, the equations give forces that seem very low for the 3rd and 4th harmonics. the first harmonic, of course, has h=1 and the second harmonic regression line is flatter, so doesn't seem very severely affected. with hfp, the 3rd and 4th harmonic loads are similar to fig. 1 of the 2007 willford et al. paper. __________________ 借用达朗贝尔的名言：前进吧，你会得到信心! [url="http://www.dimcax.com"]几何尺寸与公差标准[/url]