AENG260 - Problem set 3.docx - PERIDO JOHN PAULO M MSAE –...

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PERIDO, JOHN PAULO M. AENG 260 -EXPERIMENTAL STRESS ANALYSIS MSAE – FPM PROBLEM SET III 2018-68796 DR. DELFIN C. SUMINISTRADO 1. Determination of maximum axial force and mass a loadcell can resist. Required : Maximum axial force, F max Maximum mass, M max Assumption : Material : Stainless steel AISI 304 Yield Strength : 215 MPa Diameter : 9 mm F max = σA F max =[ 215 MPa ] [ π ( 9 mm ) 2 4 ] F max = 13677.70902 N 13.67770902 kN M max = F max g M max = 13677.70902 N 9.806 m s 2 M max = 1394.830615 kg 9 mm
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The placement of the strain gages on the four sides of the tension member provides a load cell which is essential independent of either bending or torsional loads. When a bending moment M is applied to the tension member either by a transverse load or by an eccentrically applied axial load. The moment M may have any direction relative to the axes of symmetry of the cross section. The components of the moment M 1 and M 2 will produce resistance changes in the gages as follows: For M1 ∆ R 2 R 2 | ¿ ∆ R 4 R 4 | and ∆ R 1 R 1 | ¿ ∆ R 3 R 3 | = 0 For M2 ∆ R 3 R 3 | ¿ ∆ R
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