Abstract
A novel approach is employed in the free vibration analysis of simply supported functionally graded beams. Modulus of elasticity, density of material, and Poisson’s ratio may change arbitrarily in the thickness direction. The equations of motion are derived using the plane elasticity theory. The governing differential equations have variable coefficients, which are functions of material properties. Analytical solutions of such equations are limited to specific material properties. Hence, numerical approaches must be adopted to solve the problem on hand. The complementary functions method will be infused into the analysis to convert the problem into an initial-value problem which can be solved accurately. Solutions thus obtained are compared to closed-form benchmark solutions available in the literature and finite element software solutions to validate the method presented. Subsequently, it is demonstrated that the method is efficiently applicable to material properties changing arbitrarily through the thickness with continuous derivatives.
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References
Koizumi, M.: FGM activities in Japan. Compos. Part B Eng. 28(1–2), 1–4 (1997)
Aydogdu, M., Taskin, V.: Free vibration analysis of functionally graded beams with simply supported edges. Mat. Des. 28, 1651–1656 (2007)
Li, X.F.: A unified approach for analyzing static and dynamic behaviors of functionally graded Timoshenko and Euler Beams. J. Sound Vib. 313, 1210–1229 (2008)
Simsek, M.: Vibration analysis of a functionally graded beam under a moving mass by using different beam theories. Compos. Struct. 92, 904–917 (2010)
Aydogdu, M.: Vibration analysis of cross-ply laminated beams with general boundary conditions by Ritz method. Int. J. Mech. Sci. 47, 1740–1755 (2005)
Simsek, M., Kocaturk, T.: Free and forced vibration of a functionally graded beam subjected to a concentrated moving harmonic load. Compos. Struct. 90, 465–473 (2009)
Soldatos, K.P., Sophocleous, C.: On shear deformable beam theories: the frequency and normal mode equations of the homogeneous orthotropic Bickford beam. J. Sound Vib. 212, 215–245 (2001)
Simsek, M.: Fundamental frequency analysis of functionally graded beams by using different higher-order beam theories. Nucl. Eng. Des. 240, 697–705 (2010)
Sina, S.A., Navazi, H.M., Haddadpour, H.: An analytical method for free vibration analysis of functionally graded beams. Mater. Des. 30, 741–747 (2009)
Li, X.F., Wang, B.L., Han, J.C.: A higher-order theory for static and dynamic analysis of functionally graded beams. Arch. Appl. Mech. 80, 1197–1212 (2010)
Simsek, M.: Static analysis of a functionally graded beam under a uniformly distributed load by Ritz Method. Int. J. Eng. Appl. Sci. 1, 1–11 (2009)
Calio, I., Elishakoff, I.: Closed-form solutions for axially graded beam-columns. J. Sound Vib. 280, 1083–1094 (2005)
Ying, J., Lu, C.F., Chen, W.Q.: Two dimensional elasticity solutions for functionally graded beams resting on elasticity foundations. Compos. Struct. 84, 209–219 (2008)
Li, X.F., Kang, Y.A., Wu, J.X.: Exact frequency equations of free vibration of exponentially graded beams. Appl. Acoust. 74, 413–420 (2013)
Huang, Y., Yang, L.E., Luo, Q.Z.: Free vibration of axially functionally graded Timeshenko beams with non-uniform cross-section. Compos. Part B Eng. 42, 1493–1498 (2013)
Shahba, A., Attarnejad, R., Hajilar, S.: Free vibration and stability of axially functionally graded tapered Euler–Bernoulli beams. Shock Vib. 18(5), 683–696 (2011)
Nikolic, A.: Free vibration analysis of a non-uniform axially functionally graded cantilever beam with a tip body. Appl. Mech. Arch. (2017). https://doi.org/10.1007/s00419-017-1243-z
Huang, Y., Li, X.-F.: A new approach for free vibration of axially functionally graded beams with non-uniform cross-section. J. Sound Vib. 329, 2291–2303 (2010)
Murin, J., Aminbaghai, M., Kutis, V.: Exact solution for the bending vibration problem of FGM beams with variation of material properties. Eng. Struct. 32, 1631–40 (2010)
Sankar, B.V.: An elasticity solution for functionally graded beams. Compos. Sci. Technol. 61, 689–696 (2001)
Celebi, K., Tutuncu, N.: Free vibration analysis of functionally graded beams using an exact plane elasticity approach. Proc. Inst. Mech. Eng. Part C 228(14), 2488–2494 (2014)
Alshorbagy, A.E., Eltaher, M.A., Mahmoud, F.F.: Free vibration characteristics of a functionally graded beam by finite element method. Appl. Math. Model. 35, 412–425 (2011)
Wattanasakulpong, N., Ungbhakorn, V.: Free vibration analysis functionally graded beams with general elastically end constraints by DTM. World J. Mech. 2, 297–310 (2012)
Wang, C.M., Ke, L.L., Roy Chowdhury, A.N., Yang, J., Kitipornchai, S., Fernando, D.: Critical examination of midplane and neutral plane formulations for vibration analysis of FGM beams. Eng. Struct. 130, 275–281 (2017)
Tang, A.-Y., Wu, J.-X., Li, X.-F., Lee, K.Y.: Exact frequency equations of free vibration of non-uniform functionally graded Timoshenko beams. Int. J. Mech. Sci. 89, 1–11 (2014)
Lee, J.W., Lee, J.Y.: Free vibration analysis of functionally graded Bernoulli–Euler beams using an exact transfer matrix expression. Int. J. Mech. Sci. 122, 1–17 (2017)
Jing, L.L., Ming, P.J., Zhang, W.P., Fu, L.R., Cao, Y.P.: Static and free vibration analysis of functionally graded beams by combination Timoshenko theory and finite volume method. Compos. Struct. 138, 192–213 (2016)
Khan, A.A., Alam, M.N., Rahman, N., Wajid, M.: Finite element modeling for static and free vibration response of functionally graded beam. Lat. Am. J. Solids Struct. 13, 690–714 (2016)
Roberts, S.M., Shipman, J.S.: Fundamental matrix and two-point boundary-value problems. J. Optim. Theory Appl. 28(1), 77–8 (1979)
Agarwal, R.P.: On the method of complementary functions for nonlinear boundary-value problems. J. Optim. Theory Appl. 36(1), 139–44 (1982)
Yildirim, V.: Free vibration analysis of non-cylindrical coil springs by combined use of the transfer matrix and the complementary functions methods. Commun. Numer. Methods Eng. 13, 487–494 (1997)
Calim, F.F.: Free and forced vibration of non-uniform composite beams. Compos. Struct. 88, 413–423 (2009)
Tutuncu, N., Temel, B.: A novel approach to stress analysis of pressurized FGM cylinders, disks and spheres. Compos. Struct. 91, 385–390 (2009)
Wang, X., Wang, Y.: Static analysis of sandwich panels with non-homogeneous soft-cores by novel weak form quadrature element method. Compos. Struct. 146, 207–220 (2016)
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Celebi, K., Yarimpabuc, D. & Tutuncu, N. Free vibration analysis of functionally graded beams using complementary functions method. Arch Appl Mech 88, 729–739 (2018). https://doi.org/10.1007/s00419-017-1338-6
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DOI: https://doi.org/10.1007/s00419-017-1338-6