A study of negative Poisson's ratios in auxetic honeycombs based on a large deflection model

Wan, Hui; Ohtaki, Hideyuki; Kotosaka, Shinya; Hu, Guoming

doi:10.1016/j.euromechsol.2003.10.006

Cited by 227 publications

(95 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…It will also expand in all directions when pulled in only one, leading to an increase of its volume (Figure 2(b)). Up to date, research work of the auxetic materials are mainly concentrating on the cell design [15][16][17] and the static and dynamic responses [18][19][20][21][22][23][24][25], although the auxetic materials also demonstrate strong potentials for energy absorption, fracture retardant, and ballistic resistance [26,27].…”

Section: Advances In Mechanical Engineeringmentioning

confidence: 99%

A Comparative Study of Ballistic Resistance of Sandwich Panels with Aluminum Foam and Auxetic Honeycomb Cores

Yang

Dong

et al. 2013

Advances in Mechanical Engineering

119

View full text Add to dashboard Cite

An innovative auxetic-cored sandwich panel (AXP) is proposed. Its perforation resistant performance under high-velocity projectile impact was numerically analyzed using the validated finite element simulation techniques and compared with that of the aluminum foam-cored sandwich panel (AFP) of identical dimensions and weight. It has been found that the AXP is far superior to the AFP in ballistic resistance because of the material concentration at the impacted area due to the negative Poisson's ratio (NPR) effect. A parametric study was carried out to investigate the effects of several key parameters, including impact velocity, face and core thicknesses, and core density, on the ballistic resistance of the AXP and AFP. The results show that the ballistic limit and perforation energy of the AXP is greatly affected by these parameters. Meanwhile, the advantages of AXP over AFP being used as ballistic resistant structures are highlighted. The primary outcome of this research is new information on the development and design of advanced ballistic resistant structures containing auxetic materials.

show abstract

Section: Advances In Mechanical Engineeringmentioning

confidence: 99%

A Comparative Study of Ballistic Resistance of Sandwich Panels with Aluminum Foam and Auxetic Honeycomb Cores

Yang

Dong

et al. 2013

Advances in Mechanical Engineering

119

View full text Add to dashboard Cite

show abstract

“…The dynamic responses and impact energy-absorbed characteristics of auxetic honeycombs are just carried out [5,17,26]. Besides, although the results of lots of researchers [7,10,11] indicated that the bulk material and cell-wall angle had a great effect on the mechanical properties of auxetic honeycombs, less attention has been paid to the dynamic crushing of ones. The abundant dynamical evolution characteristics in auxetic honeycombs caused by the variation of cell-wall angles under different impact loading should be further clarified.…”

Section: Introductionmentioning

confidence: 99%

“…Overaker et al [9] and Yang et al [10] studied the effects of morphology and orientation on the elastic behavior of reentrant honeycombs. Wan et al [11] provided a theoretical approach for evaluating negative Poisson's ratios of auxetic honeycombs and revealed that Poisson's ratio was mainly related to the geometric parameters of microcell structure. Grima et al [12] discussed a new explanation for 2 Advances in Mechanical Engineering achieving the auxetic behavior in cellular solids according to the "rotation of rigid units" mechanism.…”

Section: Introductionmentioning

confidence: 99%

Numerical Investigation on Dynamic Crushing Behavior of Auxetic Honeycombs with Various Cell-Wall Angles

Zhang

Ding

et al. 2014

Advances in Mechanical Engineering

View full text Add to dashboard Cite

Auxetic honeycombs have proven to be an attractive advantage in actual engineering applications owing to their unique mechanical characteristic and better energy absorption ability. The in-plane dynamic crushing behaviors of the honeycombs with various cellwall angles are studied by means of explicit dynamic finite element simulation. The influences of the cell-wall angle, the impact velocity, and the edge thickness on the macro/microdeformation behaviors, the plateau stresses, and the specific energy absorption of auxetic honeycombs are discussed in detail. Numerical results show, that except for the impact velocity and the edge thickness, the in-plane dynamic performances of auxetic honeycombs also rely on the cell-wall angle. The "> <"-mode local deformation bands form under low-or moderate-velocity impacting, which results in lateral compression shrinkage and shows negative Poisson's ratio during the crushing. For the given impact velocity, the plateau stress at the proximal end and the energy-absorbed ability can be improved by increasing the negative cell angle, the relative density, the impact velocity, and the matrix material strength. When the microcell parameters are the constant, the plateau stresses are proportional to the square of impact velocity.

show abstract

“…stiffness, strength and energy absorption) of such structures are generally far inferior to their out-of-plane properties. There have been recent efforts, however, to use the low in-plane stiffness and auxetic properties of honeycombs in designing flexible structures for applications that require high deformation under targeted loads [8][9][10]. One example of such design using compliant, highly deformable honeycombs is flexible microelectro-mechanical-system structures [11][12][13], where it is difficult to use sliding or revolving joints (such as hinges and axes), mainly owing rspa.royalsocietypublishing.org Proc R Soc A 469: second-order hier.…”

Section: Introductionmentioning

confidence: 99%

Self-similar hierarchical honeycombs

et al. 2013

View full text Add to dashboard Cite

Hierarchical structures are observed in nature, and can be shown to offer superior efficiency. However, the potential advantages of structural hierarchy are not well understood. We extensively explored a bending-dominated model material (i.e. transversely loaded hexagonal honeycomb) which is susceptible to improvement by simple iterative refinement that replaces each three-edge structural node with a smaller hexagon. Using a blend of analytical and numerical techniques, both elastic and plastic properties were explored over a range of loadings and iteration parameters. A wide variety of specific stiffness and specific strengths (up to fourfold increase) were achieved. The results offer insights into the potential value of iterative structural refinement for creating low-density materials with desired properties and function.

show abstract

A study of negative Poisson's ratios in auxetic honeycombs based on a large deflection model

Cited by 227 publications

References 26 publications

A Comparative Study of Ballistic Resistance of Sandwich Panels with Aluminum Foam and Auxetic Honeycomb Cores

A Comparative Study of Ballistic Resistance of Sandwich Panels with Aluminum Foam and Auxetic Honeycomb Cores

Numerical Investigation on Dynamic Crushing Behavior of Auxetic Honeycombs with Various Cell-Wall Angles

Self-similar hierarchical honeycombs

Contact Info

Product

Resources

About