ABSTRACT
Material properties of metals/alloys are strongly temperature-dependent. By lowering the temperature, the number and tightness of chemical bonds increase. Thus, yielding becomes more and more difficult, and the initial yield stress s0 becomes a larger value. Other plastic parameters have similar change with temperature. In ANSYS, the temperature dependency is defined using command TBTEMP. The combustion chamber was simulated in ANSYS190 to study its mechanical behavior with temperature loading. The material of the combustion chamber was defined with the one-term Chaboche model plus the Perzyna option. Also, the material properties of the combustion chamber vary with temperatures. A combustion chamber was simulated under different temperatures with material properties as a function of temperature. Obviously, temperature plays a major role in the model. The temperature causes the thermal strain, which directly affects the stresses and strains of the combustion chamber.
