摘要
用膨胀计测量了氧化铝粉末注射成形的烧结过程中试件的单轴收缩率和收缩速率.基于试验数据,设计了相应的参数标定算法,用于确定烧结模型中的单轴粘度和烧结应力.以氧化铝人工髋关节植体为例,将该模型和参数引入到有限元软件Abaqus中实现数值模拟,以预测试件在烧结过程中的收缩和变形.结果表明,用标定的参数的模拟结果与试验结果基本吻合.
Uniaxial shrinkages and shrinkage rates of alumina powder injection molding components in sintering process were measured by a dilatometer. Based on experimental data, an algorithm for parameter identification was designed to determine the uniaxial viscosity and sintering stresses in the sintering model. Taking the sintering of an alumina hip implant as an example, the sintering model and the identified parameters were introduced into the finite element software, Abaqus, for simulations. The shrinkages and distortions of the components in a sintering process were predicted. The numerical results using the identified parameters agree reasonably with the experimental ones.
出处
《西南交通大学学报》
EI
CSCD
北大核心
2008年第2期275-279,共5页
Journal of Southwest Jiaotong University
基金
教育部博士点基金资助项目(20020613005)
法国政府中法联合培养博士生项目(20041859)
关键词
烧结
注射成形
收缩率
氧化铝
陶瓷
标定
数值模拟
sintering
injection molding
shrinkage
alumina
ceramics
identification
numerical simulation
作者简介
宋久鹏（1978-），男，博士研究生，研究方向为制造工艺学，E-mail：jpsong@163．com
柳葆生（1955-），男，教授，博士，研究方向为制造工艺学，E-mail：bsliu@home．swjtu．edu．cn
