Recent content by StressMan2506

Special thanks to MNLiaison. The linked paper certainly looks pertinent to my case. Thorough study will tell. Regards, StressMan

Thanks, guys. The blend is at a systems penetration in a wing rib. To design, fatigue life is very high. Treating the blend as a chamfer around the entire circumference and calculating an effective plain hole diameter leads to a stress increase at the attachment holes - no problem. I am left...

Fellow Stress Engineers: Do any of you know of a reference to a stress concentration factor in-way-of a chamfer over a small proportion of the circumference of a circular aperture; see attached view. Thanks in anticipation...

Fellow Stress Engineers: Roark (6th & 7th editions, tables 35 & 15.2 respectively) includes 6 cases covering the above condition, namely:- a) All edges simply supported b) All edges clamped c) Edges b simply supported, edges a clamped d) Edges b simply supported, one edge a simply supported...

Thanks, SWComposites. The perfect answer; no ambiguity!

Thanks Compositepro. I interpret your reply as being that, with woven material, the sequence 0/45/90 is never used. Have I got it right? How would you interpret [[(0,90)/(±45)]3]s? Thanks in anticipation.

Fellow composite-using engineers: Thread327-334726 covered similar ground to my present query. I have a document containing lay-up notation [[(0,90)/(±45)]3]s. I am working with structural analysis in which this lay-up has been interpreted as 0/45/90/-45/0/45/45/0/-45/90/45/0, i.e...

Hi Nidhish: I've not worked with this stuff since November, so I need to refresh my memory; I'll get back to you... Louis

They could be, but I'm seeking an independent source to get a handle on what the concept means and how my concession case would affect it...

Thanks, rb1957. "Composite" here means "plastic" skin & stringer. A note in one of our output files suggests that the "post-buckling cut-off" parameter is a limit applied to the loading to prevent debonding of stringer from skin. It appears in "incomplete diagonal tension" analysis and is...

Fellow Stress Engineers: Do any of you have any references to post-buckling cut-off as applied to the above structural form? I've taken a look at the manual for the software we're using, but, as expected, it doesn't really enlighten me. I need to use engineering judgement on a low concession...

Thanks, guys.

Fellow Stress Engineers: I am investigating a doubler on one flange of an extruded I-section. The tensile & compressive E values of the I-section are, respectively 1.02 & 1.03 times those of the strap. I have some familiarity with calculating such sections under end load or bending moment, but...

Thank you very much!

Thanks, guys. GrandpaDave: The thread you provided the link for refers to TN 1458 as a follow-up to TN 1051. Huth quotes 1051 as a reference, but not 1458; I'll check it out. rb1957: I did mean equation 1 of TN 1051. 'C' therein is bolt flexibility, which may be calculated by the method...