5. A platform is suspended by two parallel rods, as shown in the sketch, with each rod being 1.28 cm in diameter. Rod A is manufactured from 4340 steel (Q+T 650 °C) (E= 210 MPa, o.2 = 855 MPa); rod B is made from 7075-T6 aluminium alloy (E= 70 GPa, oo.2 = 505 MPa). a) Develop an equation giving the realtionship between the applied force and the elastic strain in the rods up to the point of yielding. Assume full elastic behaviour up to the yield strength given above and that the loading is such that the elastic strain in each rod will be the same.

i need the answer quickly

3) Referring to the plot below, a steel bar with a radius of 0.2523-inch exposes to 650°C. If the expected lifetime of the iron bar is 9 years, what is the maximum load allowed to carry? ( Stress (psi) 20,000 10,000 8,000 6,000 4,000 2,000- 1,000 30 32 34 36 38 40 42 (36+0.78 In s) Larson-Miller parameter w 1000

The axially aligned pressure vessel, shown in Fig Q2, is made from aluminium exhibiting a Young's Modulus of 73GPa and a Poisson ratio of 0.34. It has an outer diameter D, of 86mm and a wall thickness t of 5mm. The vessel is subject to an internal pressure P of 150bar and externally applied torque T of 4.5kNm. a) Draw the 2D planar state of stress of any finite element located on the outer surface of the pressure vessel, according to the polar coordinate system provided. b) Sketch the longitudinal, circumferential and planar shear strain profile through the thickness of the vessel wall. c) Determine the minimum factor of safety for the given load cases, assuming the aluminium has a yield strength of 175MPA, and comment on the most likely mode and locus of failure. theta i. - Z - T Do Section A-A: Side View End View

Thank you. Please help me.

Figure 2 shows a bar with a length L fixed at the left end. Question 2 The uniformly distributed force f (unit: N/m) is applied along the axis of the bar, and a concentrated force P (unit: N) is applied at the free end of the bar. The bar has a constant Young's modulus E and cross-section area A. Find the stretch of the bar: (a). at the free end of the bar; (b). at the center of the bar. (Expressing all the resulta with E, A, L, f, and P). E, A L Fig. 2. The kft end of the bar is fd, ad the froe ed of the bar is applied with a force P. The uniformly distribatod kece f is applied akong the ais of the bar.