Large deflection of rectangular sandwich tubes with metal foam core

In this paper, the plastic behavior of a clamped rectangular sandwich tube with metal foam core is studied by analytical and numerical methods. Using the yield criterion, the analytical solution for plastic behavior of a rectangular metal foam core sandwich tube under transverse loading is derived. The numerical calculation is conducted, analytical results are compared with numerical ones. Analytical and numerical results are verified by each other. Finally, the influences of the punch width, loading position, foam strength, and tube-wall thickness on large deflection of the sandwich tubes are discussed based on the analytical model. It is shown the load and plastic energy increase with the increase of punch width, the metal-foam strength and tube-wall thickness, loading position moving from the center to the sides.

Automated summary

In this paper, the plastic behavior of a clamped rectangular sandwich tube with metal foam core is studied using analytical and numerical methods. The analytical solution for the plastic behavior of the tube under transverse loading is derived using the yield criterion, and is compared with numerical results. The influences of the punch width, loading position, foam strength, and tube-wall thickness on the large deflection of the sandwich tubes are discussed based on the analytical model.