A finite element approach for modelling the fracture behaviour of unidirectional FFF-printed parts

被引:0
作者
Seibel, Simon [1 ]
Kiendl, Josef [1 ]
机构
[1] Univ Bundeswehr Munchen, Inst Engn Mech & Struct Anal, Werner Heisenberg Weg 39, D-85577 Neubiberg, Germany
基金
欧洲研究理事会;
关键词
3D printing; Fused Filament Fabrication; Additive manufacturing; Structural mechanics; Finite element analysis; Fracture; PROCESS PARAMETERS; FAILURE;
D O I
10.1007/s40964-025-01021-8
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
We present a finite element modelling approach for unidirectional Fused Filament Fabrication (FFF)-printed specimens under tensile loading. In this study, the focus is on the fracture behaviour, the goal is to simulate the mechanical behaviour of specimens with different strand orientations until final failure of the specimens. In particular, the aim is to represent experimentally observed failure modes for different print orientations and the typical dependence of the parts' strength on the print orientation. We investigate several modelling aspects like the choice of a suitable failure criterion, a suitable way to represent fracture in the finite element mesh or the necessary level of detail when modelling the characteristic edges of FFF-printed specimens. As a result, this work provides an approach to model FFF printed specimens in finite element simulations, which can represent the characteristic relation between mesostructural layout and macroscopic fracture behaviour.
引用
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页数:12
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