Question

Some general Material Properties: Materia Elastic Modulus Poisson's ratio Yield Strength Density and std deviat. 330 MPa la- 16.5 Mpa - 190 MPa: la-30.0 Mpa 414 MPa; 1a-40.0 Mpa 2024-T4 E- 70 GPa H0.30 2800 kg/m T6 E- 69 GPa H-0.30 -2700 kgm 1040 carbon Steel E-200 GPA H-0.33 7850 kg 4130 c steel hrome-molyE-200 GPA 655 Mpa -60.0 MPa 800 MPa l-40.0 Mpa 1260 MPa m-0.30 -7850 kg/m E- 100 GPA m-0.33 -4500 kg/m tanium Graphite Fiber E- 224 GPA 1400 kg/m 1. A triangular steering column mount is constructed of 1.5 mm wall thickness 1040 steel. The equilateral triangle has 100 mm sides (at the mean) and is welded together at one vertex. The 1400 mm length beam has the steering column mounted 400 mm from the left end. a. Determine the torsional stiffness of the beam at the column location b. Determine the bending stiffness of the beam at the column location considering the beam is in a fixed-fixed configuration at its ends c. Determine the angular deflection if a 500 N-m torque is applied at the column location due to a "heavy person" pulling on the steering wheel on vehicle entry d. Determine the resonant frequency of the system in both flexure and torsion if the column has a known mass of 10 kg and a known moment of inertia of 0.7 kg-m.

Answer 1