Static Structural Modeling of Large Size Thermostable Infusion Tool from Materials with Different Coefficient of Thermal Expansion

In this article, we consider the problem of modeling the tool for large-size composite airframe structures production by vacuum infusion technology taking into account the difference in the coefficients of thermal expansion of used materials. The decision of thermal expansion compatibility questions is necessary to minimize deviation of a form-building surface from its initial shape and an exception of a stringer set detachment from a prepreg layer during the production process. We’ve made static structural analysis of heated infusion tool using ANSYS software and solve the thermal expansion harmonization problem by finding the correct connection type for rods between form-building surface and tool frame as well as the correct connection type for stringer tool fixing. These recommendations allow to meet the imposed constrains to precision of details production with method of vacuum infusion.