A thin isotropic, linear elastic thin film with Young's modulus E, Poisson's ratio v and thermal...
Fantastic news! We've Found the answer you've been seeking!
Question:
Transcribed Image Text:
A thin isotropic, linear elastic thin film with Young's modulus E, Poisson's ratio v and thermal expansion coefficient a is bonded to a stiff substrate. The film is stress free at some initial temperature, and then heated to increase its temperature by AT. The substrate prevents the film from stretching in its own plane, so that &11 = 22 = 12 = 0, while the surface is traction free, so that the film deforms in a state of plane stress. Calculate the stresses in the film in terms of material properties and temperature, and deduce an expression for the strain energy density in the film. Note that the Stress-strain relations for isotropic, linear elastic materials. Young's Modulus, Poisson's ratio and the Thermal Expansion Coefficient are given as: E11 €22 €33 2€23 2€13 2812. = 011 022 033 023 013 012. 1/2 1 -V 1 -V-V 0 0 0 0 0 0 The inverse relationship can be expressed as E (1+v)(1-2v) -V -V -V 1 0 0 2 (1+1) 0 0 0 0 Thin film Substrate (rigid) 1-v V V 0 0 0 V 1-v 0 0 V 0 0 0 V V 1-v 0 0 0 0 0 0 0 2 (1+ v) 0 0 0 0 (1-2) 2 0 0 0 2 (1+v). 0 0 0 0 0 0 0 0 (1-2v) 2 0 0 0 0 0 0 (1-2) 2 011 022 033 023 013 012 + a4T E11 €22 €33 2823 2013 2012. e₁ Ea AT 1-2v 1 0 1 1 1 0 0 A thin isotropic, linear elastic thin film with Young's modulus E, Poisson's ratio v and thermal expansion coefficient a is bonded to a stiff substrate. The film is stress free at some initial temperature, and then heated to increase its temperature by AT. The substrate prevents the film from stretching in its own plane, so that &11 = 22 = 12 = 0, while the surface is traction free, so that the film deforms in a state of plane stress. Calculate the stresses in the film in terms of material properties and temperature, and deduce an expression for the strain energy density in the film. Note that the Stress-strain relations for isotropic, linear elastic materials. Young's Modulus, Poisson's ratio and the Thermal Expansion Coefficient are given as: E11 €22 €33 2€23 2€13 2812. = 011 022 033 023 013 012. 1/2 1 -V 1 -V-V 0 0 0 0 0 0 The inverse relationship can be expressed as E (1+v)(1-2v) -V -V -V 1 0 0 2 (1+1) 0 0 0 0 Thin film Substrate (rigid) 1-v V V 0 0 0 V 1-v 0 0 V 0 0 0 V V 1-v 0 0 0 0 0 0 0 2 (1+ v) 0 0 0 0 (1-2) 2 0 0 0 2 (1+v). 0 0 0 0 0 0 0 0 (1-2v) 2 0 0 0 0 0 0 (1-2) 2 011 022 033 023 013 012 + a4T E11 €22 €33 2823 2013 2012. e₁ Ea AT 1-2v 1 0 1 1 1 0 0
Expert Answer:
Related Book For
Fundamentals of Momentum, Heat and Mass Transfer
ISBN: 978-1118947463
6th edition
Authors: James Welty, Gregory L. Rorrer, David G. Foster
Posted Date:
Students also viewed these mathematics questions
-
Discuss the role of Information Systems in a business. Explain the concept collaboration. Discuss five reasons why teamwork is important. Describe how a relational database will organize data?
-
Deduce an expression for the time it takes for the concentration of a substance to fall to one-third its initial value in an nrh-order reaction.
-
2. Use power series y(x) = anx" to solve the following ODE n=0 y" + 2xy' - y = 0.
-
Compose a detailed paper on the Emotions of employees and its impact on the organization
-
Based on Problem 2-9B, prepare an income statement for David Segal for the month of October 20. Problem 2-9B: David Segal started a business. During the first month (October 20--), the following...
-
Its increasingly clear that many postings on blogs and product review Web sites are fake or are posted there to manipulate consumers opinions. How big a problem is this if consumers increasingly look...
-
Consider the following cash flow profile and assume MARR is 10 percent/year. a. What does Descartes' rule of signs tell us about the IRR(s) of this project? b. What does Norstrom's criterion tell us...
-
Valley Corporation is attempting to select the best of a group of independent projects competing for the firms fixed capital budget of $4.5 million. The firm recognizes that any unused portion of...
-
A 3.0-cm tall object is 55 cm in front of a diverging mirror that has a -20 cm focal length. Part A Calculate the image position. Input a positive value if the image is on the same side from the...
-
A managers favorite project requires an after-tax cash outflow on January 1 of $10,000 and promises to return $2,500 of after-tax cash inflows at the end of each of the next five years. The after-tax...
-
Lean Operating Systems: 1. Bracket Manufacturing uses a Kanban system for a component. Daily demand is 900 units. Each container has a combined waiting and processing time of 0.70 days. If the...
-
As price falls, quantity demanded ________.
-
If a fi rms total revenue is $5 billion, its fi xed costs are $3 billion, and its variable costs are $1.5 billion, what does it do (a) in the short run and (b) in the long run?
-
If price is above ATC, the firm will ______. a) shut down in the short run and go out of business in the long run b) shut down in the short run and stay in business in the long run c) operate in the...
-
Equilibrium price is $ _________; equilibrium quantity is _______.
-
Practical Application: Lets say that you wanted to go into business for yourself. Your rich uncle offered to invest $100,000 in this business, but he had one provisionthat it must be a monopoly. What...
-
K . Douglas had the following transactions during January 2 0 2 0 . Jan 1 , 2 0 2 0 Introduced $ 7 , 5 0 0 cash into the business as Capital.Jan 2 , 2 0 2 0 Purchased goods on credit from T ....
-
At the beginning of the year, Lam Ltd. had total assets of $800,000 and total liabilities of $500,000. Use this information to answer each of the following independent questions. (a) If Lam's total...
-
A 2.20-m diameter pipe carries water at 15C. The head loss due to friction is 0.500 m per 300 m of pipe. Determine the volumetric flow rate of the water leaving the pipe.
-
A liquid of density r flows through a sluice gate as shown. The upstream and downstream flows are uniform and parallel, so that the pressure variations at stations 1 and 2 may be considered hydro...
-
For the pumping system described in Problem 14.23, how will the maximum elevation above the surface of the reservoir change if the water temperature is 80C(P v = 47.35 kPa)? Data From Problem 14.23 A...
-
What are the Returns and Risks currently for the different asset classes?
-
What is the P(Gain) for each?
-
What does the time series state when graphing from the Financial Crisis to the current day for each of the asset classes?
Study smarter with the SolutionInn App