Applicability of strain energy density criterion for fracture prediction of notched PLA specimens produced via fused deposition modeling

被引：19

作者：

Seibert, P. ^{[1
,2
]}

Susmel, L. ^{[3
]}

Berto, F. ^{[1
]}

Kaestner, M. ^{[2
]}

Razavi, N. ^{[1
]}

机构：

[1] Norwegian Univ Sci & Technol NTNU, Dept Mech & Ind Engn, Richard Birkelands Vei 2b, N-7491 Trondheim, Norway

[2] Tech Univ Dresden, Inst Solid Mech, D-01062 Dresden, Germany

[3] Univ Sheffield, Dept Civil & Struct Engn, Western Bank, Sheffield S10 2TN, S Yorkshire, England

来源：

ENGINEERING FRACTURE MECHANICS | 2021年 / 258卷

关键词：

Fused deposition modeling; Fracture mechanics; Local approaches; Notch; 3D printing; ELASTIC STRESS-FIELDS; MECHANICAL-PROPERTIES; CRITICAL DISTANCES; FATIGUE BEHAVIOR; COMPONENTS; STRENGTH; PARTS; ORIENTATION; TOUGHNESS; PROPERTY;

D O I：

10.1016/j.engfracmech.2021.108103

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

The Averaged Strain Energy Density (ASED) criterion is validated for the failure prediction of notched Polylactide Acid specimens fabricated by Fused Deposition Modeling by means of experimental data and the results are compared to the Theory of Critical Distances. The common approach of estimating the ASED control volume radius based on the measured fracture toughness was shown to be suboptimal, arguably because of the difficulties of obtaining the fracture toughness with such complex materials. Therefore, a more robust approach is evaluated in analogy of the TCD and it is shown to successfully extend the range of applicability of the ASED criterion.

引用

页数：14

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[2]

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