Stiffness prediction and deformation analysis of Cobalt-Chromium lattice structures: From periodic to functionally graded structures produced by additive manufacturing

Liverani, Erica; Fortunato, Alessandro

doi:10.1016/j.jmapro.2021.05.033

Cited by 14 publications

(3 citation statements)

References 35 publications

(45 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[62]. For the abovementioned reasons, the area of application of lattice structures is becoming wider and includes: mechanical engineering [63][64][65][66][67], where solutions are sought to ensure lightweight structures with unchanged mechanical properties (aviation [68], architectural materials [69]), and biological engineering (bone structures [70]) and energy (construction of heat exchangers [71] with a developed heat exchange surface [72], including for waste heat recovery [73], refrigeration applications [74], thermal desalination processes [75], pool and flow boiling [76], wavy microchannel heat exchangers [77], and thermal management of electric motors [78]). Lattice structures have become an alternative to random structures (foam structures, stochastic networks).…”

Section: Additive Manufacturing Of Lattice Structuresmentioning

confidence: 99%

Review of the State-of-the-Art Uses of Minimal Surfaces in Heat Transfer

2022

View full text Add to dashboard Cite

The design of heat exchangers may change dramatically through the use of additive manufacturing (AM). Additive manufacturing, colloquially known as 3D printing, enables the production of monolithic metal bodies, devoid of contact resistance. The small volume of the exchanger, its lightness of weight, and the reduction of its production costs, compared to conventional methods, make the production of heat exchangers by AM methods conventional technologies. The review study presents a new look at the TPMS as a promising type of developed surface that can be used in the area of heat transfer. (Thus far, the only attractive option. The most important feature of additive manufacturing is the ability to print the geometry of theoretically any topography. Such a topography can be a minimal surface or its extended version—triply periodic minimal surface (TPMS). It was practically impossible to manufacture a TPMS-based heat exchanger with the method of producing a TPMS.) The issues related to the methods of additive manufacturing of metal products and the cycle of object preparation for printing were discussed, and the available publications presenting the results of CFD simulations and experimental tests of heat exchangers containing a TPMS in their construction were widely discussed. It has been noticed that the study of thermal-flow heat transfer with the use of TPMSs is a new area of research, and the number of publications in this field is very limited. The few data (mainly CFD simulations) show that the use of TPMSs causes, on the one hand, a several-fold increase in the number of Nu, and on the other hand, an increase in flow resistance. The use of TPMSs in heat exchangers can reduce their size by 60%. It is concluded that research should be carried out in order to optimize the size of the TPMS structure and its porosity so that the gains from the improved heat transfer compensate for the energy expenditure on the transport of the working fluid. It has been noticed that among the numerous types of TPMSs available for the construction of heat exchangers, practically, four types have been used thus far: primitive, gyroid, I-WP, and diamond. At the moment, the diamond structure seems to be the most promising in terms of its use in the construction of heat exchangers and heat sinks. It is required to conduct experimental research to verify the results of the CFD simulation.

show abstract

Section: Additive Manufacturing Of Lattice Structuresmentioning

confidence: 99%

Review of the State-of-the-Art Uses of Minimal Surfaces in Heat Transfer

2022

View full text Add to dashboard Cite

show abstract

“…Images data processing then allowed calculation of the stiffness of each structure (k TOT ) and layer (k Layer ), as well as indirect calculation of the single unit stiffness (k U ) as the ratio between layer stiffness and the number of units per layer. A more exhaustive explanation of the procedure was described in a previous paper [30].…”

Section: Lattice Structure Production Testing and Modellingmentioning

confidence: 99%

The influence of geometric defects and microstructure in the simulation of the mechanical behaviour of laser powder-bed fusion components: Application to endoprosthesis

Liverani

Zanini

Tonelli

et al. 2021

Journal of Manufacturing Processes

View full text Add to dashboard Cite

“…Porous structures [1-3] with high specific strength [4] and high energy absorption properties [5] are widely used in the design of engineering structures such as aerospace materials, vehicles, ships, and oceans. Given the limitations of single lattices [6][7][8][9][10][11] or honeycomb structures [12] in engineering applications, they are often combined with metal or composite sheets to serve as core layers in multilayer sandwich structures [13][14][15]. Scholars are increasingly focusing on advanced multilayer 2 of 19 sandwich structures to capitalize on their protective capabilities and enhanced energy absorption to make ships more blast-and impact-resistant.…”

Section: Introductionmentioning

confidence: 99%

Study on the Deformation Mode and Energy Absorption Characteristics of Protective Honeycomb Sandwich Structures Based on the Combined Design of Lotus Root Nodes and Leaf Stem Veins

Chen,

Zhang

et al. 2024

JMSE

View full text Add to dashboard Cite

Sandwich structures are often used as protective structures on ships. To further improve the energy-absorbing characteristics of traditional honeycomb sandwich structures, an energy-absorbing mechanism is proposed based on the gradient folding deformation of lotus root nodes and a leafy stem vein homogenizing load mechanism. A honeycomb sandwich structure is then designed that combines lotus root nodes and leafy stem veins. Four types of peak-nest structures, traditional cellular structure (TCS), lotus root honeycomb structure (LRHS), leaf vein honeycomb structure (LVHS), and lotus root vein combined honeycomb structure (LRVHS), were prepared using 3D printing technology. The deformation modes and energy absorption characteristics of the four honeycomb structures under quasistatic action were investigated using a combination of experimental and simulation methods. It was found that the coupling design improved the energy absorption in the structural platform region of the LRHS by 51.4% compared to that of the TCS due to its mechanical mechanism of helical twisting and deformation. The leaf vein design was found to enhance the peak stress of the structure, resulting in a 4.84% increase in the peak stress of the LVHS compared to that of the TCS. The effects of the number, thickness, and position of the leaf vein plates on the honeycomb structure were further explored. The greatest structural SEA effect of 1.28 J/g was observed when the number of leaf vein plates was four. The highest SEA of 1.36 J/g was achieved with a leaf vein plate thickness of 0.6 mm, representing a 7.3% improvement compared to that of the 0.2 mm thickness. These findings may provide valuable insights into the design of lightweight honeycomb sandwich structures with high specific energy absorption.

show abstract

Stiffness prediction and deformation analysis of Cobalt-Chromium lattice structures: From periodic to functionally graded structures produced by additive manufacturing

Cited by 14 publications

References 35 publications

Review of the State-of-the-Art Uses of Minimal Surfaces in Heat Transfer

Review of the State-of-the-Art Uses of Minimal Surfaces in Heat Transfer

The influence of geometric defects and microstructure in the simulation of the mechanical behaviour of laser powder-bed fusion components: Application to endoprosthesis

Study on the Deformation Mode and Energy Absorption Characteristics of Protective Honeycomb Sandwich Structures Based on the Combined Design of Lotus Root Nodes and Leaf Stem Veins

Contact Info

Product

Resources

About