Analysis Of The Mechanism Based On Mechanics Of The Clam Shell Shells Under Ultra High Pressure

Shellfish food is very popular in today, because it not only delicious and nutritious. However due to shellfish has strong a can makes shell tightly closed of closed shell muscle, led people hard opened shell and removed bell meat. In the past people usually using tool manual shelling, this way both not convenient also not health and security,Its hard mass production to meet people of needs, with technology of progress, people has research out variety method to makes shells separate and removed bell meat. Super high-pressure shelling technology is the most concerned way now.Ultra high pressure shell technology is using ultra high pressure equipment to pressure processes shellfish, After packing a certain time, seashells are not only easily separated from its interior flesh can also be unshelled very well, And after ultra high pressure processing, the pathogen is also greatly reduced. However it is not entirely clear the mechanism that how shellfish unshell under ultra-high. This paper attempts to study from mechanical perspective on mechanism of ultrahigh pressure status and shellfish under shelling. Through the study of shellfish, Shell meat and shell relying mostly on tight junctions of the adductor muscle, are key parts of the shell, the rest of the meat easily detached from the shell, So this paper analysis part of the adductor muscle and shell only.Taking clam shell as an example to analysis the mechanism of the shell shell under high pressure in terms of mechanical. Through analysis of real shell, simplified part of adductor muscle and shell models. Application elastic mechanical, bio-mechanical, related of mechanical theory combines super high hydraulic by force situation, Get the contact stress distribution of theoretical results between the adductor muscle and shell.Through the stress distribution curve can be seen near the center of the adductor muscle and shell access to maximum contact stress, more close to the edge of the contact stress are smaller. The edge contact stress on minimum distribution trends.Application of finite element method to calculate adductor muscle force condition. Draw the contact part of the adductor muscle and shell contact stress contour.Contact stress results agreed well with theoretical results trends. Illustrate the feasibility of the model results. Through finite element models can be drawn out,in the case of adductor muscle to exert different pressures the contact stresses between adductor muscle and shell within different regions.Through ultra-high pressure processing equipment on the clam shell test. Experimental verification,with increasing pressure the clam shells adductor muscle was detached from the shell near the center of the first. When reach300MPa pressure adductor muscle and shell completely separate. Simultaneously draw the adductor separate from shell area diameter under different pressure curve. This result consistent with the finite element analysis of contact stress between adductor muscle and shell is higher than300MPa edge consistent minimum diameter curve of contact stress, verify the correctness of the model.This paper from the mechanical point obtain the mechanism of clam shell shell. Under high pressure, The maximum contact stress near the center at adductor muscle and shell contact area. Closer to the edge of its smaller contact stress. Certain contact stress can inactivate adductor muscle from the shell. The first detachment place of adductor muscle and shell near the center with increasing pressure.This article although as clam shell for example, but can be common to shellfish.