Abstract
In the study, based on existing shells, clam shells for the study to focus on its combination of strength and deformation characteristics were investigated. Analysis of the microstructure on the mechanical properties of clam shells, aragonite sheet comparison between the critical load Lc1 and the prismatic layer of aragonite layer between the critical load Lc2 changes, discussed the critical load overall mechanical properties of materials influence. The results showed that, vertical clam shell when the growth surface can carry the load the maximum stress is mainly concentrated in about 55MPa. Along the growth direction of the load, the maximum stress range between 48.5MPa-61MPa, as opposed to vertical loading and stability. Compressed prismatic layer and nacreous layer of the maximum intensity was significantly higher than the overall compressive strength, maximum strength of layered compression is about 2 times the overall compressive strength, direction perpendicular to the surface when the load curve showed the characteristics of ceramics. Clam shell aragonite between the critical load for the chip 90N, prismatic layer and nacreous layer between the critical load of 120N. In this process, the emergence of brittle fracture characteristics of ceramics, and when the nacre is broken, there was even a class of metal material slippage.
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