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2 Calculate the strain response for the spring-dashpot model shown below, under a constant stress of...
2) Using the stress-strain curve for a steel alloy shown in the following figure answer the following questions: 600 500 400 500 400 300 300 200 200 100 100 0.000 0.002 0.006 0.004 Strain 0.00 0,04 0.08 0.12 0.16 0.20 Using the same steel alloy, consider a cylindrical specimen 15 mm in diameter pulled in tension, if a load of 85,000 N is applied: h) Calculate the approximate ductility in percent elongation, (consider the final elongation as the elongation at...
Calculate the modulus of resilience for the material having the stress-strain behavior shown in the Animated Figure 6.12. Tensile strength 450 MPa (65,000 psi) Strain 0 Stress 0 MPA Stress 0 psi 500 70 Strain0 Stress 0 MPA Stress 0 psi 60 400 103 ps 50 MPa 40 Yield strength 250 MPa (36,000 psi) 300 40 0 200 30 200 30 20 100 20 10 100 10 0.10 0.20 0.30 0.40 Strain
3) Develop a spring-dashpot model for the composite structure loaded by force P shown below, and list the primary stress, strain, and constitutive equations. You do not need to substitute equations and solve. Note that Land A are distances and areas, respectively, that could be used in preparing expressions for stress and strain, but will not be needed for this problem. Develop the equations as we did in class. Hydroxyapatite, ne Colagen, L = total length A - Total area...
Please give a full, detailed, worded explanation. Thank you :))) S. Draw a possible stress strain graph for a material with a yield stress of 300 MPa, an elastic modulus of 200 GPa, a UTS of 450 MPa and a ductility of 20%. Calculate the elastic strain at the point where the material starts to plastically deform. 6. A nylon rope with an elastic modulus of 3 GPa is placed under a force of 17.5 kN. The cross-sectional area of...
ive already gotten 2 wrong answers this is my last attempt please be correct!!!!!!!!!!!!!! Incorrect Consider the brass alloy the stress-strain behavior of which is shown in the Animated Fioure 2.12. A cylindrical specimen of this alloy 15 mm in diameter and 214 mm long is to be pulled in tension Calculate the force necessary to cause 0.00788 mm reduction in diameter. Assume a value of 0.35 for Poisson's ratio. 26507.1 the tolerance is +/-2% Click if you would like...
(B)A stress of 6.7 MPa is employed to one type of a polymer under constant strain. After 40 days at 20 °C the stress is reduced to only 8.4 MPa. When the same polymer is heated to 40 °C the relaxation time is 40 days. 1- Calculate the relaxation time constant for this material at 25 °C? 2- Estimate the stress after 50 days at 25 °C? 3- Estimate the stress relaxation activation energy for the same polymer.
σ(MPa) 400 The stress-strain diagram for a ductile material is shown at right. Determine approximately the modulus of elasticity E. 300 nd the yield stress σγ using the 0.2% offset strain method. If the shear modulus is known to be G 48GPa, compute 200- Poisson's ratio v. The test specimen for this material shown below is stretched with a force P 24kN. Find the resulting 100 hanges in dimensions of the specimen. 10 mm 0.004 0.008 0016 0 100 mm...
Harmonic response of the Maxwell element The Maxwell element for modeling a viscoelastic system treats it as a spring and a viscous dashpot connected in series as shown in the diagram below. The red arrows indicate the direction that the stress is applied. E and η are the Young's modulus of the spring and the viscosity of the dashpot component, respectively. Both parameters are real constants and characterize the model completely. dashpot spring (a) Show that the time rate of...
4. A control pedal for actuating a spring mechanism is shown. Calculate the shear stress in pin A due to a force P when it causes a normal stress of 70 MPa in the rod AB. Pin A is in double shear. (Ans. T = 16.6 MPa) 300 mm 3 mm diam rod & Pin A 6 mm diam A3 B AK4 Cable Pin B 6 mm diam mm
Axial (Normal) Stress, Strain and Deformation The system is loaded and supported as shown. The system is made of Brass, E, 98.9 GPa, is a solid shaft and has a diameter of d 27 mm. 9 kN 10 kN A D B 6 kN E 15 kN 9 kN 10 kN + En: 2010) 629) 145 mm 85 mm 50 mm 60 mm See hon in cd P tol15 P-a3 -33-0.056 T-P/A Calculate the axial normal stress in section CD,...