文献类型：期刊文献

英文题名：A transient updated Lagrangian finite element formulation for bond formation in fused deposition modeling process

作者：Lou, Ruishen Li, Huimin Zhong, Jiehua Zhang, Chun Fang, Daining

第一作者：Lou, Ruishen

通信作者：Li, HM[1];Li, HM[2];Li, HM[3];Li, HM[4]

机构：[1]Beijing Inst Technol, Inst Adv Struct Technol, Beijing 100081, Peoples R China;[2]Xi An Jiao Tong Univ, State Key Lab Strength & Vibrat Mech Struct, Xian, Peoples R China;[3]Beijing Inst Technol, Beijing Key Lab Lightweight Multifunct Composite, Beijing 10081, Peoples R China;[4]Beijing Inst Technol, State Key Lab Explos Sci & Technol, Beijing 100081, Peoples R China;[5]China Acad Launch Vehicle Technol, Beijing 100076, Peoples R China;[6]Guizhou Inst Technol, Sch Mat & Met Engn, Guiyang 550003, Peoples R China

第一机构：Beijing Inst Technol, Inst Adv Struct Technol, Beijing 100081, Peoples R China

通信机构：corresponding author), Beijing Inst Technol, Inst Adv Struct Technol, Beijing 100081, Peoples R China;corresponding author), Xi An Jiao Tong Univ, State Key Lab Strength & Vibrat Mech Struct, Xian, Peoples R China;corresponding author), Beijing Inst Technol, Beijing Key Lab Lightweight Multifunct Composite, Beijing 10081, Peoples R China;corresponding author), Beijing Inst Technol, State Key Lab Explos Sci & Technol, Beijing 100081, Peoples R China.

年份：2021

卷号：152

外文期刊名：JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS

收录：;EI(收录号：20211710255692);Scopus(收录号：2-s2.0-85104683520);WOS:【SCI-EXPANDED(收录号:WOS:000652654300008)】；

基金：This work was financially supported by the National Natural Science Foundation of China (12072029,11602020,518630003), National Defense Basic Research Program of China (JCKY2019602D024), Shanghai Space Science and Technology Innovation Fund Project (202032041007), Laboratory research project of Beijing Institute of Technology (2019BITSYA33), Frontier and interdisciplinary innovation projects of Beijing Institute of Technology (2018CX11001), Fund of State Key Laboratory for Strength and Vibration of Mechanical Structures (SV2018-KF-15), Beijing Institute of Technology Research Fund Program for Young Scholars.

语种：英文

外文关键词：Bond Formation; Updated Lagrangian Finite Element; Formulation; Sintering; Fused Deposition Modeling

摘要：The bond formation among polymer filaments in the fused deposition modeling (FDM) determines the mechanical behavior of resultant parts and structures. A transient updated Lagrangian finite element formulation is proposed to simulate the bond formation among molten filaments in the FDM process with flexibility in dealing with complex geometry, boundary conditions and gravitational load. Qualitative and quantitative validation of the model is carried out by comparing with sintering experiments under both isothermal and non-isothermal conditions. The model is used to investigate the effects of initial configuration and boundary conditions and gravity on the bond formation in the FDM process. Results suggest that fidelity to configuration and boundary is crucial to the prediction of bond formation. Gravity imposes opposite influences on bonds along the vertical and horizontal direction and there is a trade-off between utilizing gravity to enhance the bond formation and keep dimensional accuracy of the printing process.