Method for calibrating contact parameters of microsized spherical aluminum powder for energetic materials

By combining the discrete element method with the angle of repose experiment, the contact parameter calibration of micron-sized spherical aluminum powder was optimized, solving the problem of high calibration difficulty and realizing the efficient preparation of energetic materials.

CN119438002BActive Publication Date: 2026-01-02XIAN MODERN CHEM RES INST
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Patent Information

Application Number
CN202411609119.9
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-11-12
Publication Date
2026-01-02
Estimated Expiration
2044-11-12

AI Technical Summary

Technical Problem

In existing technologies, it is difficult to calibrate the contact parameters of micron-sized spherical aluminum powder and there are many flow variables, resulting in low efficiency in the preparation of energetic materials.

Method used

By employing the discrete element method combined with the angle of repose experiment, the collision recovery coefficient, rolling friction coefficient, sliding friction coefficient, and adsorption energy between micron-sized spherical aluminum powder particles were gradually calibrated, and the calibration order and parameter range were optimized. The contact parameters were further adjusted using the angle of repose simulation.

Benefits of technology

This enables rapid and accurate calibration of contact parameters for micron-sized spherical aluminum powder, reducing workload and promoting the efficient preparation of energetic materials.

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Abstract

The application provides a kind of microspherical aluminum powder contact parameter calibration method for energetic materials, and the basic principle of the method is to combine discrete element simulation-experiment, compare simulation angle of repose and experimental angle of repose error, take different calibration order for different error, and gradually complete the contact parameter calibration of microspherical aluminum powder for energetic materials.The application first proposes that for microspherical aluminum powder, the inter-particle collision restitution coefficient, sliding friction coefficient, rolling friction coefficient and adsorption energy of the four contact parameters need to be calibrated, and the application first clearly defines the appropriate roughening range of aluminum powder when modeling, the calibration order under different conditions and the contact parameter calibration range, the application reduces the workload of microspherical aluminum powder contact parameter calibration, and promotes the efficient preparation of energetic materials.
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