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林业科学 ›› 2013, Vol. 49 ›› Issue (9): 135-139.

• 论文与研究报告 • 上一篇    下一篇

生物质液压成型机的双锥度模具

李震1,2, 曲迪2   

  1. 1. 北京林业大学工学院 北京 100083;
    2. 内蒙古科技大学机械工程学院 包头 014010
  • 收稿日期:2012-10-30 修回日期:2012-12-10 出版日期:2013-09-25 发布日期:2013-09-19
  • 基金资助:

    生物质常温开式模成型的数学模型及成型机理研究(NJZY12116)。

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

Li Zhen1,2, Qu Di2   

  1. 1. School of Technology, Beijing Forestry University Beijing 100083;
    2. Department of Mechanical Engineering, Inner Mongolia University of Science and Technology Baotou 014010
  • Received:2012-10-30 Revised:2012-12-10 Online:2013-09-25 Published:2013-09-19

摘要:

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αβ,锥长l1l2,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。

关键词: 生物质, 双锥度, 模具, 有限元模拟

Abstract:

Design a bi-taper mold to instead the single-taper mold of Hydraulic Briquetting Press. Take mechanical analysis to bi-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.

Key words: biomass, bi-taper, mold, finite element simulation

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