摘要
从理论分析和软件模拟两方面分析了面曝光快速成形技术中的变形问题.建立了小挠度温度应力弯曲微分方程,推导出变形与层数、温差及位置等参数间的关系式.利用仿真软件AN-SYS,采用"生死单元"的方法模拟了桥型零件固化过程中的变形,验证了层数、温差及位置对变形的影响,并阐述了产生变形的原因.通过实验,验证了理论分析和软件模拟的正确性.
The deformation problem in the mask projection stereolithography（MPS） are studied from the two aspects of theoretical analysis and software simulation.A little deflection temperature stress bending differential equation is established,so the quantitative relation between the distortion and the layer number,the temperature difference and the locations are obtained.The ANSYS software is used to simulate the deformation of the solidification process of the bridge parts in the help of the method of elements birth and death.Consequently,the influence of the layer number,the temperature difference and the locations on the deformation are validated,and the reasons why the deformation is produced are expounded.The correctness of the theoretical analysis and the software simulation are checked through the study of the experiment making.
出处
《纺织高校基础科学学报》
CAS
2011年第4期585-589,共5页
Basic Sciences Journal of Textile Universities
基金
国家自然科学基金资助项目(50745017
50875194)
陕西省教育厅自然科学专项基金项目(08JK305)
关键词
面曝光快速成形
变形
模拟
ANSYS
mask projection stereolithography
deformation simulation
ANSYS
