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Thermal buckling of cylindrical shell with temperature-dependent material properties : conventional theoretical solution and new numerical method

Wang, Zewu and Han, Quanfeng and Nash, David H. and Fan, Haigui and Xia, Liangzhi (2018) Thermal buckling of cylindrical shell with temperature-dependent material properties : conventional theoretical solution and new numerical method. Mechanics Research Communications, 92. pp. 74-80. ISSN 1873-3972

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Abstract

Even though the thermal buckling behavior of shells has been investigated for many years, until now the thermal buckling problem with temperature-dependent material properties still cannot be solved by the existing commercial finite element codes. Therefore, the conventional theoretical solution of the critical temperature rise of cylindrical shell with the temperature-dependent material properties is first derived in this work. Then, an innovative numerical approach is developed by introducing the bisection method and a user subroutine of ANSYS to overcome the shortcoming of existing finite element codes. The results prove that the temperature-dependent material properties have a great negative influence on the ability of the thermal buckling resistance of the cylindrical shell. As a result, the subroutine of ANSYS developed in this work provides a convenient design method for engineers to avoid the complicated theoretical calculation.