Please explain Griffith Energy Criterion and compare it with critical stress criterion from Inglis.
Please explain Griffith Energy Criterion and compare it with critical stress criterion from Inglis.
The state of stress at a critical static location of a machine member, as determined by strain gauge measurements, is shown on the stress element below. 1) Determine the maximum principle stress, the minimum principal stress, the maximum shear stress, the angle ??, and the angle ??. Note: use the Mohr's circle method from Chapter 4. 2) Determine the factor of safety for this machine member using the distortion energy yield criterion (Von-Mises) from Chapter 5, if the material is...
Question 1: The state of plane stress shown occurs at a critical point of a steel (@y 250MPa ) machine componenL 60 MPa Draw the Mohr's Cercle Determine the Principal Stresses Deternine the factor of safety with respect to yield, using (a) the maximum-shearing stress criterion, and (b) the maximum-distortion-energy criterion. 90 MPa 25 MPao
In a plate of aluminium alloy 7075 a central defect is present with a total length of 3 mm. a) Calculate the critical stress for fracture using the Griffith criterion and using Kic. b) Explain possible differences. Given: surface tension y,-1.14 10 mm Young's modulus E 7x 104 N/mm2 fracture toughness Kic 1040 N/mm32 Answer a) Griffith ơ,-5.8 MPa. Kki Ơ,-479 MPa
please ans all question.. Note: Please make the diagram to explain your answer. Q-1 What do you mean by critical size and critical mass? Q-2 Explain the function of a moderator. What is the criterion of its effectiveness? Q-3 What is a thermal reactor? What is a fast reactor? Q-4 Explain the characteristic features of a PWR. With the help of a schematic diagram, explain the working of a PWR Note: Please make the diagram to explain your answer. Q-1...
PROBLEM 7.82 - 100 MPa Solve Prob. 7.81, using the maximum-shearing-stress criterion. PROBLEM 7.81 The state of plane stress shown occurs in a machine component made of a steel with oy = 325 MPa. Using the maximum-distortion-energy criterion, determine whether yield will occur when (a) o = 200 MPa, (b) o = 240 MPa, (C) 00 = 280 MPa. If yield does not occur, determine the corresponding factor of safety.
3). The stress tensor at a critical point of a structure from an FEA is (120 0 0 0 = 0 -500 0 MPa 0 0 -300 What is the maximum shear stress value at that point? Assume that the structure is made from a brittle grey cast iron. Experimental tests found that the tensile strength for the material is 152 MPa and the compressive strength is 572 MPa. Applying Mohr's criterion for brittle materials, will the structure be safe?...
Criterion 5. Accurately draw and explain free energy diagrams Illustrating rate of reaction (kinetics) and clearly express the effects of enzymes on rates of reaction P. Draw a free energy diagram for a non-spontaneous reaction that proceeds very slowly in the absence of any catalysis. Label AG and Eact.
The cantilever bar in the figure is made from AISI 1018 CD steel and is statically loaded with Fy = 800 N, and Fx = Fz = 0. The fillet radius at the wall is 2 mm with theoretical stress concentrations of 1.5 for bending, 1.2 for axial, and 2.1 for torsion.Sut = 440 MPa = 64 kpsi, Sy = 370 MPa = 54 kpsi. Analyze the stress situation in rod AB by obtaining the following information.a) Determine the precise...
1. Griffith, 1928 2. Avery, MacLeod, & McCarty, 1944 3. Hershey and Chase, 1952 For each experiment, answer the following questions: 1. What was the purpose of the experiment? 2. Explain the experimental design. What technology was critical to the experiment? What were the different groups in the experiment? Why was each one included? 3. What were the results (or predicted results) of the experiment? 4. What did they conclude from the experiment?
How does the intrinsic Fermi energy compare to the overall Fermi energy in a p-type semiconductor? In an n-type semiconductor? Please explain in detail. Thanks!