Effect of functionally graded material on frictionally excited thermoelastic instability

✍ Scribed by Seung Wook Lee; Yong Hoon Jang

• Book ID: 104100165
• Publisher: Elsevier Science
• Year: 2009
• Tongue: English
• Weight: 556 KB
• Volume: 266
• Category: Article
• ISSN: 0043-1648
• DOI: 10.1016/j.wear.2008.06.006

✦ Synopsis

Thermoelastic instability (TEI) is investigated focusing on the effect of functionally graded materials (FGM) where the FGM half plane slides against a homogeneous conducting or rigid non-conducting body at speed V. Results confirm analytically that there is maximum critical speeds occurring at a certain value of nonhomogeneous parameter of FGM within a range of thermal conductivity, which was reported previously in the simulation model [Y.H. Jang, S.-H. Ahn, Frictionally-excited thermoelastic instability on functionally graded material, Wear 262 (2007) 1102-1112]. The effect of non-homogeneous parameters for FGM on thermoelastic instability shows that the non-homogeneous parameters of the elastic modulus and thermal expansion coefficient are strong influential factors. It is also found that when the non-homogeneous parameters of FGM range between two positive bounded values, unconditionally stable behavior is shown for a range of thermal conductivity.