QQ客服 官方微博 反馈留言

	挤压铸造凝固过程热-力耦合模拟 Ⅰ.数学模型及求解方法
	韩志强 ; 朱维 ; 柳百成 ; HAN Zhiqiang ; ZHU Wei ; LIU Baicheng
	2010-06-08 ; 2010-06-08
关键词	挤压铸造 热-力耦合 有限元方法 本构模型 squeeze casting thermomechanical coupling finite element method constitutive model TG249.2
其他题名	THERMOMECHANICAL MODELING OF SOLIDIFICATION PROCESS OF SQUEEZE CASTING Ⅰ.Mathematic Model and Solution Methodology
中文摘要	开发了模拟挤压铸造凝固过程中铸件温度、应力及形状变化的有限元模型.该模型包括了凝固过程中潜热的释放和体积收缩效应、界面传热和变形的相互作用以及凝固壳在冲头压力下的变形等.应力场模拟中采用热弹粘塑性本构模型描述凝固壳的变形,并对液相和糊状区进行了特殊处理.利用接触算法处理铸件与模具界面,并且采用一种特殊的迭代法来模拟冲头的运动.该模型可以用来研究模具设计和工艺参数(如模具温度及冲头压力等)对铸件质量的影响.; A coupled thermomechanical finite element model has been developed to simulate the temperature,stress and shape developments during the solidification process of squeeze casting.The model includes the effect of latent heat and volume shrinkage due to solidification,the mutual dependence of interfacial heat transfer and casting deformation,and the mechanical behavior of the solidified shell under the punch pressure.The stress model features a thermo-elasto-viscoplastic constitutive equation that accounts for the response of the solidified shell as well as a special treatment given to the liquid and mushy zones.A contact algorithm was employed for the casting/die interface,and an iterative algorithm was employed to simulate the movement of the punch.The model can be used to investigate the effects of die design and process parameters(die temperature,punch pressure,etc.)on the quality of castings.; 国家自然科学基金项目50675113; 教育部留学回国人员科研启动基金资助~~
语种	中文 ; 中文
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/48165]
专题	清华大学
推荐引用方式 GB/T 7714	韩志强,朱维,柳百成,等. 挤压铸造凝固过程热-力耦合模拟 Ⅰ.数学模型及求解方法[J],2010, 2010.
APA	韩志强,朱维,柳百成,HAN Zhiqiang,ZHU Wei,&LIU Baicheng.(2010).挤压铸造凝固过程热-力耦合模拟 Ⅰ.数学模型及求解方法..
MLA	韩志强,et al."挤压铸造凝固过程热-力耦合模拟 Ⅰ.数学模型及求解方法".(2010).

个性服务

查看访问统计

相关权益政策

暂无数据

收藏/分享

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。