According to the definition shape and structure of apricot stones,together with the analysis of physical features of its structure,the conclusion of mechanical analysis of cracking has been drawn that the relationship between the core's length,width and height is not simply linear the core can approximately be on shell which is symmetry on its transverse,upright and vertical elliptical section.

An apricot kernal shell is studied as a shell with an unusual shape subject to consistant and uniformly distributed cracking pressures.

Study on influencing factors of Chinese chestnut s shelled force;

The effects of different factors,such as the loading direction,the size,the loading speed,the water content and geometry shape,on the chestnut shelled force were investigated in this manuscript.

In the experiment of apricot stone's extrusion cracking,the parameter of cracking load and its compress variation which influence apricot stone's cracking has been measured.

At the same time,we studied the cracking manner and shell-kernel separation of two kinds of walnut,analyzed the relation of shell smash degree and shell-kernel separation characteristic in different cracking manner,for offering the foundation of designing the reasonable machine of sh.

Through the shell-broking test of extrusion and blow for different species of walnut,then contrast various indicators about the effect shell-broking,it come out that it is a better way using blow-breaking than that of extrusion method,that it makes more intact kernel.