A Quick Selection Method of Quality Scaling Factor for CFRP 3D Mesoscopic Cutting Simulation

Abstract

METHOD FOR QUICKLY SELECTING THREE-DIMENSIONAL (3D) MICRO-SCALE CUTTING SIMULATION OF CARBON FIBER REINFORCED POLYMER A method for selecting a mass scaling factor for three-dimensional (3D) micro-scale cutting simulation of carbon fiber reinforced polymer (CFRP) in the present invention relates to the field of composite material cutting simulation. In particular, the present invention relates to a method for selecting a mass scaling factor for 3D micro-scale cutting simulation of CFRP based on finite element simulation. The method includes: creating a micro geometric model of a composite material and meshing the model; assigning a corresponding material property to each mesh part, and defining a material direction; importing each mesh part into an assembly module, and setting a relative position between the parts through translation, rotation and other operations and constraints; using a dynamic explicit analysis step; setting contact and boundary conditions; and submitting for analysis. The method is applicable to different cutting velocities. With the method, a mass scaling factor can be efficiently selected in CFRP 3D micro-scale cutting at different cutting velocities, and calculation efficiency can be improved while calculation accuracy is ensured, thereby facilitating development and improvement of a CFRP 3D micro-scale cutting model and research of a CFRP cutting mechanism. ?54130 i

Description

technical field [0001] The invention belongs to the field of cutting simulation of composite materials, and relates to a method for quickly selecting a quality scaling factor of CFRP three-dimensional mesoscopic cutting simulation based on finite element simulation. Background technique [0002] Carbon fiber reinforced resin matrix composites (CFRP) are widely used in aerospace and other high-end equipment fields due to their excellent mechanical properties. However, due to its heterogeneity and anisotropy, CFRP is frequently damaged during processing, which seriously affects the performance and reliability of parts. Therefore, in order to suppress processing damage from the root, it is necessary to study the processing mechanism of CFRP in depth and analyze the formation mechanism of processing damage. Finite element simulation, especially three-dimensional mesoscopic cutting simulation is the most effective method to study the machining mechanism of composite materials. ...

AI Technical Summary

Problems solved by technology

However, the cutting speeds used in these literatures are very low, much lower than the milling and drilling speeds commonly used in actual machining

With the further improvement of the model, higher cutting speed needs to be simulated, and more complex factors must be considered. The dynamic effect in the simulation analysis becomes more and more obvious, and it is difficult to satisfy the quasi-static premise.

At this time, it is necessary to re-determine the appropriate mass scaling factor, and the appropriate mass scaling factor can only be selected by calculating a set of models with different mass scaling factors, which requires a lot of calculations and seriously affects the development of the CFRP 3D mesoscopic model and perfection

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