Temperature analytical method for pressed riding wheel based on mechanics and thermodynamics
An analysis method and thermodynamic technology, applied in the testing of mechanical components, testing of machine/structural components, instruments, etc., can solve problems such as prolonging the service life of supporting rollers, unpredictable thermodynamic states, and inability to propose reasonable solutions, so as to achieve analysis and prediction Effect
Active Publication Date: 2012-10-03
BEIJING UNIV OF CHEM TECH
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Problems solved by technology
[0003] At present, the selection of the material and speed of the supporting wheel is mostly based on the mechanical performance test of the material and the actual engineering experience, but the thermodynamic state that may appear in the actual working process of the supporting wheel cannot be predicted, so the use of the supporting wheel Prolongation of lifespan, unable to come up with a rational approach
With the development of the supporting wheel industry and the expansion of its application scope, if the material and speed are selected based on the mechanical properties and experience of the material, it will definitely affect the service life of the supporting wheel and the profit of the enterprise.
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[0038] In the implementation of the present invention, the universal test bench is used to obtain the mechanical performance data of the materials required by the finite element analysis, and then the finite element structural mechanics analysis software (ANSYS) is used for simulation calculation to solve the plastic deformation energy of the support roller under compression. It is used to determine the heat source inside the supporting roller, and the maximum deformation displacement is used to determine the distance from the outer surface of the supporting roller to the plastic deformation cut-off surface l 1 . Finally, the thermodynamic analysis is used to solve the temperature field distribution function or curve, the maximum temperature value and the distance from the outer edge surface of the supporting wheel during the working process, and the material and speed of the supporting wheel are selected by comparison. The specific implementation steps of this analysis method...
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The invention relates to a temperature analytical method for a pressed riding wheel based on mechanics and thermodynamics, belonging to the field of nonmetal materials. The method is based on finite element mechanical analysis and thermodynamical analysis, and measured values of material elastic modulus, elastic limiting strength and stress strain curve and the like required by the finite element mechanics analysis are obtained through material testing mechanics. Plastic deformation energy generated during pressed and deformed process of the riding wheel is obtained by utilizing finite elements. Since the riding wheel is repeatedly extruded during actual work, the plastic deformation energy is finally converted into heat source for promoting the temperature inside the riding wheel to raise. According to the thermodynamical analysis, a temperature field distribution function or curve inside the riding wheel as well as maximum temperature value and position under heat exchange equilibrium state are obtained. The thermodynamical state of the riding wheel during work is analyzed and predicted by utilizing the temperature field distribution function or curve; and according to a comparative result of the maximum temperature value and position under the heat exchange equilibrium state, the comparative result is used as the basis for selecting material and rotation speed of the riding wheel.
Description
technical field [0001] The invention belongs to the field of non-metallic materials science, and is a kind of analysis of material properties that combines material test mechanics, finite element mechanical analysis (such as ANSYS, etc.) and thermodynamic analysis. The distribution function or curve and the maximum temperature value and the position where it occurs are used to realize the method of selecting the best material and the best speed of the supporting wheel. This method can not only realize the selection of the optimal material and rotational speed of the supporting wheel, but also can be used as a guiding method for selecting materials and optimizing production processes for other non-metallic material structures. [0002] The supporting roller is repeatedly squeezed during the load-bearing rotation process, and the plastically deformed part of the supporting roller is converted into a heat source for internal temperature rise. When the temperature inside the supp...
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IPC IPC(8): G01M13/00
Inventor 任冬云孙永生崔秀国
Owner BEIJING UNIV OF CHEM TECH