Mechanical Behaviors of Orthogonal Spiral Metal Skeleton–Polyurethane Elastomer Composites under Complex Loading Modes

• Published in: Advanced engineering materials 2024-12, Vol.26 (24), p.n/a
• Main Authors: Xue, Xin, Ye, Zixiong, Liu, Xinzhe, Liao, Juan, Zhang, Mangong
• Format: Article
• Language: English
• Subjects: interpenetrating composites; mechanical properties; orthogonal spiral metal skeleton; tensile warpage
• ISSN: 1438-1656; 1527-2648
• DOI: 10.1002/adem.202401999

Herein, a novel material design strategy is proposed: an interpenetrating composite composed of a woven orthogonal spiral metal skeleton and polyurethane (PU) elastomer. This interpenetrating composite combines rigidity and flexibility, exhibiting excellent elasticity and deformation recovery. The deformation behavior and mechanical properties of the composites under various loading conditions are investigated through experiments and numerical simulations. Different degrees of warping behaviors occur in composites with various structural parameters under uniaxial tension. Alternating rotations and double spiral arrangements can significantly limit the warping phenomenon, with a maximum reduction of 78%. The bending load capacity is regularly increased by increasing the wire diameter and decreasing the pitch. Increasing the number of loaded spiral wires enhances the bending load capacity of the composites. Uniaxial compression tests demonstrate that the composites have excellent load‐carrying capacity and strain recovery, with compressive strength 1.5 times that of pure PU. Cyclic compression tests further illustrate the excellent energy consumption capacity and stability of the composites. Overall, the introduction of orthogonal spiral skeletons into the composites demonstrates the potential to achieve enhanced load‐carrying capacity and large strain recovery simultaneously. An interpenetrating composite with orthogonal spiral metal skeleton and polyurethane elastomer is developed. The warping behavior under uniaxial tension is observed and measured. Alternating rotation and double spiral wire mesh significantly reduce warpage. Reducing the pitch increases the bending load‐bearing capacity. The composites demonstrate excellent compressive strength and strain recovery.