Microscopic strain fields at crack tips in porous materials analyzed by a gradient-enhanced elasticity theory

Joffre, Thomas; Chen, Song; Isaksson, Per

doi:10.1016/j.engfracmech.2016.10.005

Cited by 6 publications

(1 citation statement)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…They used polyvinylchloride foam and executed stressstrain responses in tension, compression, and shear [14]. In another work, Isaksson et al estimate the approximate microstrain field of porous material using the images obtained by X-ray computed tomography (CT-scan) of the small wood specimen [15]. The distribution of the pores in specimens is typically uncontrollable because the generation of complex geometries with common manufacturing methods is too complicated or even impossible.…”

Section: Introductionmentioning

confidence: 99%

Investigation into effective mechanical properties of porous material produced by the additive manufacturing method

Fakoor

Tabatabaee

2023

Frattura Ed Integrità Strutturale

View full text Add to dashboard Cite

Porous materials are defined as materials that contain holes, voids, or spaces in their structures, which can be interconnected or isolated. In the most complex forms of these materials, the holes can have irregular shapes with a random distribution in size, location, and direction, making studying their properties a challenging problem. Additive manufacturing techniques offer opportunities to create complex structures, and in this paper, we investigate the effective mechanical properties of porous material produced by the Fused Displacement Modeling (FDM) technique. We also propose an algorithm for generating a porous body containing irregularly shaped holes with arbitrary distributions in size and location while maintaining specific porosity. Due to the orthotropic properties of bodies created by the FDM technique, Reinforced Isotropic Solid Modeling (RISM) is combined with existing theories that calculate the effective properties of isotropic materials. For the experiments, some modified standard specimen with a porosity of 0.05 to 0.40 has been fabricated, and the elastic modulus and ultimate stress have been calculated using the tensile test. Finally, the results are compared with experimental data.

show abstract

Section: Introductionmentioning

confidence: 99%