Compressive mechanical behavior and model of composite elastic-porous metal materials

Abstract

This work presents the experimental characterization and theoretical modeling of composite elastic-porous metal materials (C-EPMM). C-EPMM is a novel porous metallic damping material made of wire mesh and wire helix. A series of quasi-static compressive experiments were carried out to investigate the stiffness and energy absorption ability of the C-EPMM with different mass ratios. The experimental results show that the mass ratios can significantly affect the stiffness and loss factor of C-EPMM. To efficiently predict the nonlinear mechanical properties of the C-EPMM a theoretical model of C-EPMM was proposed for the first time, the model was based on the manufacturing process. A comparison between the predicted data and the experimental data was conducted. The results show that the theoretical model can accurately predict the mechanical performance of C-EPMM. The conclusions derived from this work can provide a new method for adjusting the mechanical performance of EPMM in applications.

Thermo‐Mechanical Characteristics of a Sandwich Cylindrical Shell with Entangled Metallic Wire Mesh: Numerical and Experimental Analysis

“…[ 1–3 ] Entangled metal wire mesh (EMWM) stands out for its elastic porous structure, displaying remarkable properties such as elasticity, rigid damping, high temperature resistance, and corrosion resistance, making it a preferred choice in aerospace and military fields. [ 4,5 ] Incorporating EMWM as a flexible sandwich layer, the sandwich cylindrical shell with entangled metallic wire mesh (SCS‐EMWM) showcases significant advantages in extreme environments, demonstrating exceptional resistance to high temperatures and thermal vibrations. [ 6 ] The fabrication process involves brazing the EMWM core layer and panel together, resulting in a structure with robust shear resistance and excellent thermal cycling performance under high‐temperature conditions.…”