Numerical Simulation Of Self-healing System With Microcapsules

In this paper, "Digital Materials" technology as the guide, self-healing microcapsules composite micro-structures were characterized as "value material" as the core technology of self-repair system of micro-scale mechanical properties and failure behavior of materials to micro-Structure of the "performance-oriented" design and performance prediction purposes.Material microstructure and mechanical properties of materials has a direct impact failure behavior. With the material microstructure in the representative volume element (RVE) is calculated self-repair system on the micromechanical response of self-repair system by changing the geometric characteristics of RVE for the study of micro structure on the performance level.This paper aims to research and build self-repair system for the simulation of the microstructure, mechanical properties prediction, micro-crack initiation and propagation simulation, crack repair and rehabilitation of strength prediction platform. Through the simulation of mechanical tests to predict the performance of its self-healing system, based on "material structure weakness," the concept of assessment of micro-cracks within the structure of micro-crack initiation and expansion of self-repair system of micro-structure deduction "virtual failure behavior, "and combined procedures Design and finite element software ABAQUS for the secondary development platform to build on.For self-healing composite materials of microcapsules microstructure, according to the actual measured geometric characteristics, distribution of information, using the ball as a core part of the filling algorithm, the pre-treatment by ABAQUS for secondary development, completion of self-healing system RVE simulation, to achieve the Automated, parametric, simple and efficient geometric modeling.Prediction of Mechanical Properties during the time that we write Python scripts to achieve:the different RVE structure of self-healing meshing; different conditions and different analysis of the automatic modeling; automatically submit calculations to assess the results of the analysis and computational mechanics based on the analysis Performance.Also calculated according to the material micro-structure of the numerical solution of mechanics to identify "material structure weakness", by writing an external program, the use of damage failure model, micro-cracks within the system self-repair of crack initiation, expansion, and deducing the micro-structure "virtual failure Behavior." We completed the self-healing system simulation of micro-cracks initiation and expansion under the uniaxial tension load and thermal load. While taking advantage of the result of the expansion of micro-cracks, according to the specified repair rate, the failure to give the restored parts of the material, re-joined the geometric model, to achieve "virtual crack repair", and the repair strength of the prediction, assessment of the strength of the material to repair parts Percentage of the original strength.Finally, research needs, in order to avoid a large number of finite element modeling of complicated operation, we will study the prediction method used in the process, implementation, integration through the program design, easy to self-healing system in the simulation platform for functionality.-â…¢...