牙科钛金属激光焊接有限元数值模拟  

Numerical simulation of laser welding of titanium alloy in dentistry

作　　者：景建龙[1] 俞青[2] 端莉梅[1] 徐凤林 丁晨[1] 黄罡[1] 

机构地区：[1]南京大学医学院附属口腔医院技工中心,南京210008 [2]南京大学医学院附属口腔医院修复科,南京210029 [3]三一重工,昆山215300

出　　处：《口腔医学》2009年第10期515-518,共4页Stomatology

基　　金：江苏省南京市医学科技发展基金资助项目(YKK05112)

摘　　要：目的采取有限元方法建立牙科钛金属激光焊接数字模型。方法采用造型软件构建固定桥支架三维模型,通过ANSYS有限元分析软件对焊接区域进行温度场数值模拟并分析残余应力。结果建立牙科钛金属激光焊接的三维有限元数值模拟模型。结论激光焊接牙科钛金属在焊接头的内部和表面可以产生一定的残余应力。Objective To establish the 3D FEM model of laser welding on dental titanium alloy. Methods The 3D model of a three-unit framework of PFM （Porcelain fused to metal） was established with modeling software; the numerical simulation of temperature field and the welding residual stress analysis of laser welding field of the framework were studied with ANSYS software. Results A 3D FEM model of laser welding for dental titanium alloy was established. Conclusion The residual stress was found in welded joint after laser welding.

关 键 词：激光焊接 三维有限元 残余应力 钛 

分 类 号：R783.1[医药卫生—口腔医学]