The hen's EGG: Shell forces at impact and quasi‐static compression
- 1 March 1976
- journal article
- research article
- Published by Taylor & Francis in British Poultry Science
- Vol. 17 (2), 199-214
- https://doi.org/10.1080/00071667608416267
Abstract
1. An equation is derived which relates the maximum force, Pm , exerted on an egg shell to the relative velocity, v0 , of the egg and a body on which it impacts and to their masses, M1 and M2 , and stiffnesses, S1 and S2 ; it is 2. Another equation is derived which relates the maximum force exerted by the egg to the reciprocals, Ra and Re , of its average and first principal curvatures at the point of impact, to the shell thickness, Tε , that is effective in respect of tensile strength, and to the ultimate strength of shell material, Stu ; it is Pm = kStuTεRχ α(Ra/Re)y in which k, χ and y are constants. 3. These equations are shown to be concordant with published data on egg shell fracture under both quasi‐static and dynamic conditions when x and y have the values — 1 and 0 respectively. 4. The equations provide a theoretical structure that can be used to identify the factors likely to affect egg shell fracture under specified conditions.This publication has 22 references indexed in Scilit:
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