含能油墨微流动直写沉积三维数值模拟

为实现微通道传爆序列的高精度装药,探究HMX基含能油墨微流动直写沉积工艺规律。采用有限元流体动力学分析方法对HMX基含能油墨的微流动书写过程进行了数值模拟,具体分析了不同书写压力、微笔直径和油墨粘度下整个油墨流动区域的速度和压力变化,并与实验相结合得到了特定条件下药线横截面积与书写线宽的关系。研究结果对微流动直写沉积装药工艺具有指导和借鉴意义。

Three-dimensional Numerical Simulation of Microflow Direct Write Technology of Energetic Ink

To increase the charging accuracy of MEMS explosive devices, and study the regularity of microflow direct write technology of HMX based energetic ink, the finite element hydrodynamic analysis method was adopted, to make a numerical simulation of the microflow writing process of HMX based energetic ink. The speed and pressure changes throughout the entire ink flow area in different writing pressures, micropen diameters and ink viscosity were analyzed, and the relationship between the cross-sectional area and the width of the ink line was calculated under the specific conditions by comparing with the experiment. The study can be instructive and useful for the microflow direct writing technology.