Computer Aided Analysis For Thermal Shock Response Of Beam

This dissertation analyzes the vibratory response of structure suffered thermal shock based on the example of cantilever suffered thermal shock, and deduces the theoretic function for the thermal shock response of cantilever. The accuracy of theoretic result is also testified by experimental result and numerical solution. From the result obtained in this thesis, it is easy to valuate the influence to structure caused by thermal shock, including the relationship between changing orderliness of thermal vibration and shock time, and the magnitude of extend, cycle and frequency. The result also becomes one of the important principles to design the structure and ensure the security.In chapter 1, the researching background of thermal shock response, the purpose and significance of the research, and the main content are presented.In chapter 2, the basic knowledge of heat conduction is introduced; a differential equation of temperature distribution according to the thickness of cantilever is deduced in detail; the function of how to calculate temperature moment is got; and then the theoretic equations of analyzing thermal shock response are obtained.In chapter 3, the experimental equipment for thermal shock response and the experimental setting designed by author are introduced; the process of experiment is described; the experimental data are analyzed and tackled; and the experimental result is got.In chapter 4, a FEM software named COSMOS, including the character of calculating rapidly and the analyzing modules, is introduced; the process of how to solve the thermal shock problem, and the numerical solution are presented.In chapter 5, the three result got by theoretic analysis, numerical method, and experiment are compared; the accuracy of theoretic analysis and the rationality of numerical method are proved.In chapter 6, conclusion and some research directions in the future are summarized.