[b]STRESS CONCENTRATION FACTORS, ROUND-ENDED LUGS[/b]

[StressMan2506]

Hi:

I need to determine stress concentration factors for round-ended lugs per ESDU 81006, Fig. 2 or Peterson, 2nd edition, Chart 5.12. Unfortunately my cases are not covered. I have [ESDU (Peterson)] d/W (d/H) = 0.229 & 0.173 and a/W (c/H) = 0.331 & 0.353. Can anyone help?

Thanks in anticipation.

Louis
(+44 7970 362573 cell/mobile)

 

[plasgears]

Go to FEA to get a true picture of stresses. You can derive your own SCF.

 

[StressMan2506]

Thanks for your response, plasgears, but we need to make a federal case to get FEA done where I work.

 

[Sparweb]

Have you looked at Stress Severity Factors in Niu's Airframe Structural Design, Chapter 7?



Steven Fahey, CET

 

[StressMan2506]

Thanks for the ref, Steven. I'm doing other things now, but a quick look at Niu, Chapter 7 did not reveal 'Stress Severity Factors'. Can you give me a page no? I have the 2nd edition.

Cheers,
Louis

 

[Sparweb]

Page 238... but now that I've had some time to think about it, I'm not sure it's applicable. Start on page 219 instead.


Steven Fahey, CET