Research And Analysis Of Thermal Thermai Matching Performance Of Marine Composite Coating Based On ANSYS

The coating materials applied on the surface of ship equipment are effective means to prevent damage to the ship structure and equipment surface from various working conditions.The coatings used for different ship equipment are also different according to the requirements of actual applications.The coating material used on the deck of a ship is usually called a deck anti-skid coating.Because the deck of a ship is often damaged by impact,rolling,friction,etc.,the composite coating needs to have the properties of impact resistance,rolling resistance,and corrosion resistance.This topic is aimed at the different areas where the ship travels,such as the extreme cold of the north and south poles and the extreme hot environment of the equator,and investigates the matching and adaptability of the composite coating with the deck substrate under extreme cold and extreme heat conditions.First of all,by consulting the relevant knowledge about the application of composite coatings on ship decks at home and abroad,we have learned about the current application of non-slip coating materials on ships,especially for the actual application of composite coatings on decks.The desire to produce composite coatings that can withstand severe weather and extreme temperatures has become more and more urgent.Design research for environmental adaptability analysis of composite coatings is imminent to accelerate the upgrade of composite coatings.Secondly,the coating material in this study is a high-performance composite coating material based on epoxy resin.Through a series of mechanical performance tests,it is found that the material is a nonlinear viscoelastic material.Based on the theoretical analysis of nonlinear viscoelastic materials,the nonlinear viscoelastic constitutive model of the composite coating is established based on the uniaxial compression,biaxial compression,in-plane shear,and stress relaxation creep tests of the composite coating,and the composite coating is subjected to uniaxial compression The connection curve of the shear test data and the theoretical curve of the constitutive relationship are compared and verified to provide material parameter requirements for subsequent analysis and research.Thirdly,the theoretical analysis is carried out from the control equations and definite solution conditions of the thermal analysis theory to derive the stress calculation equation of the composite coating;the laser measurement method is used to conduct the experimental measurement of the thermal conductivity,thermal conductivity and specific heat capacity of the composite coating,based on the material Set the environmental temperature difference for the thermal conductivity,and determine the convective heat transfer conditions between the composite coating and the substrate according to the third boundary condition.From time to time,based on the non-linear viscoelastic constitutive model and thermal conductivity test of the composite coating,the thermal matching performance simulation analysis of the composite coating and the steel plate substrate under both extreme heat and extreme cold conditions is carried out.The transient thermal analysis of the composite coating and the base steel plate at two extreme temperatures can obtain the deformation,stress and strain distributions of the composite coating and the steel substrate.Based on the Tsai-Wu failure criterion,the failure status of the composite coating and the steel substrate is investigated.It is determined that the composite coating has certain heat and cold resistance properties.Finally,under extreme heat and cold conditions,the composite coating was analyzed by finite element simulation with the consideration of crack propagation,and the temperature conditions,crack location,crack size and other factors were further investigated for the actual effect of surface cracks on the composite coating.The expansion trend under the application.Through simulation analysis,the matching and adaptability of the composite coating with the deck substrate under extreme cold and extreme heat conditions are investigated.The analysis and research have certain theoretical guiding significance for the environmental performance analysis of the composite coating and subsequent upgrading.