mfg Posted December 31, 2016 Report Share Posted December 31, 2016 The torsional rigidity of the Avanti's fiberglass body mounted onto its 'X' member frame is ----?-----ft/lb degree of twist.............1) 500-1200.......2) 2500-3000.......3) 3800-4200....or...4) 5000-5500. Link to comment Share on other sites More sharing options...
mfg Posted January 3, 2017 Author Report Share Posted January 3, 2017 No thoughts here? Link to comment Share on other sites More sharing options...
mfg Posted January 28, 2017 Author Report Share Posted January 28, 2017 All through here? Link to comment Share on other sites More sharing options...
studegary Posted January 28, 2017 Report Share Posted January 28, 2017 19 hours ago, mfg said: All through here? I believe that you mean to say; ---ft-lbs per degree of twist. Link to comment Share on other sites More sharing options...
mfg Posted January 28, 2017 Author Report Share Posted January 28, 2017 7 minutes ago, studegary said: I believe that you mean to say; ---ft-lbs per degree of twist. That's correct Gary, PER degree of twist! Link to comment Share on other sites More sharing options...
r1lark Posted January 29, 2017 Report Share Posted January 29, 2017 Well, I was too lazy to run the calculations but since no one else answered.................. Taking into account the tensile modulus of elasticity of FRP, the frame rail design and gage, the x-member, etc, a quickie estimate is around 4000 ft-lbs/deg of twist. So I'll say the answer is 3) 3800 - 4200. Link to comment Share on other sites More sharing options...
mfg Posted January 29, 2017 Author Report Share Posted January 29, 2017 2 hours ago, r1lark said: Well, I was too lazy to run the calculations but since no one else answered.................. Taking into account the tensile modulus of elasticity of FRP, the frame rail design and gage, the x-member, etc, a quickie estimate is around 4000 ft-lbs/deg of twist. So I'll say the answer is 3) 3800 - 4200. Holy cow!..I didn't realize ALBERT EINSTEIN was still alive!!.....You are CORRECT!! Link to comment Share on other sites More sharing options...
r1lark Posted January 30, 2017 Report Share Posted January 30, 2017 Well Ed, at least this mechanical engineering degree is useful for something. But seriously, I didn't calculate that, just made use of reference material. In this case, the SAE paper on the Avanti. Link to comment Share on other sites More sharing options...
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