Experimental Investigation of Light Metal Scrap on Out-of-Plane Tea Ring and Shredding Test 2012-01-2062
The objective of “Experimental Investigation of Light Metal on Out-of-Plane Tearing and Shredding Test (wall thickness less than or equal to 10mm)” is to find solutions to shredding and recovery processing of end-of-life vehicles and household appliances. By way of tensile test, the mechanical characteristics of the light metal scrap material were obtained. On the basis of strengthening effect, the constitutive relations of materials were reduced to bilinear model. Through the trousers test, Light Metal Scrap produced equal and opposite elastic-plastic bending deformation twice in the tearing process was observed. So in process of trousers tearing test, the total work external force did was mainly composed of specific tearing work and elastic-plastic bending work of trousers legs. The features of light metal scrap materials in tearing and shredding process are investigated, and the specific tearing work per unit area of new crack surface was regarded as a tearing property of light metal. The specific tearing work under different loading rate was compared and that the specific tearing work is not insensitive to loading rate in a certain range was found. The investigation showed that: The tensile specific work of rupture of light metal scrap is one order bigger than specific tearing work, meaning that tearing mode will be better on shredding recovery treatment of end-of-life vehicles and household appliances.