农业机械学报2011，Vol.42Issue(6)：117-121,5.
玉米秸秆芯结构建模与径向压缩过程模拟
Structure Modeling and Radial Compression Simulation of Corn Stalk Cores
摘要
Abstract
In order to further understand compression characteristics of the crop straws with core, taking Nongdal08 corn stalk cores as object, the viscoelastic parameters were obtained through radial compression test for the crop stalks with core was anisotropic, non-homogeneous and non-linear. The finite element model of the corn stalk core was established with ANSYS. Radial compression and relaxation of corn stalk cores were preceded and simulated. The results showed stress relaxation characteristics of corn stalk cores were depicted by five parameters generalized Maxwell model, and errors between experimental values and finite element simulation values about fitting model parameters were less than 10% . The test approved that the radial compression change curves between test and simulation were accordant, and verified the validity of the simulation results and the feasibility of the calculation model.关键词
玉米秸秆/秸秆芯/径向压缩/数值模拟Key words
Corn stalks/Stalk cores/Radial compression/Numerical simulation分类
农业科技引用本文复制引用
廖娜,黄光群,陈龙健,贺城,韩鲁佳..玉米秸秆芯结构建模与径向压缩过程模拟[J].农业机械学报,2011,42(6):117-121,5.基金项目
国家高技术研究发展计划(863计划)资助项目(2009AA043603)和公益性行业(农业)科研专项资助项目 （863计划）
