生物质液压成型机的双锥度模具

Bi-Taper Mold Characteristics of Hydraulic Briquetting Press Based on ANSYS

设计一双锥度模具来替代生物质常温液压成型机中的单锥度模具。对双锥度模具进行力学分析,并建立基于ANSYS的双锥度模具的有限元模型;对4种不同物料在同一双锥度模具下进行压缩试验,得出模具的锥度α、β,锥长l1、l2,保形长度l3以及出口直径d对物料的成型密度都有一定的影响;分析在挤压过程中物料(秸秆)的变形趋势及其摩擦应力分布,得到材料在双锥度模具中所受载荷的变化规律;在同一模具下,不同物料的压缩循环过程具有相同的变化规律,物料的压力均值与密度均值也有一定关系;对于同种材料,双锥度模具下的最大压力峰值要大于单锥度。

Design a hi-taper mold to instead the single-taper mold of Hydraulic Briquetting Press. Take mechanical analysis to hi-taper mold, and build a finite element model of bi-taper mold based on ANSYS ; take compression test for different materials in the same mold. Conclusion ： taper α、β, taper length l1, l2, preserving length l3 and outlet diameter affected forming density; through analysis the material（straw） deformation trend and friction distribution during the extrusion process, we got load variation of the material in the mold; different materials in the same mold had same variation during the compression cycle process. Besides, material average pressure and average density also had a certain relationship.