Specimens of human cortical bone tissue were subjected to a simple tension test until fracture. The...
Specimens of human cortical bone tissue were subjected to a simple tension test until fracture. The test results revealed a stress-strain diagram shown in the following figure, which has three distinct regions. These regions are an initial linearly elastic region (between 0 and A), an intermediate nonlinear elastoplastic (between A and B), and a final linearly plastic region (between B and C). The average stresses and corresponding strains at points O, A, B and C are measured as: Point Stress o (MPa) Strain € (mm/mm) 0.0 0.005 114 0.010 128 0.026 Using this information, determine the elastic and strain hardenine moduli of the bone tissue in the linear regions of its 0-€ diagram. Note that the strain hardening modulus is the slope of the - curve in the plastic region. Also, find mathematical expressions relating stresses to strains in the linearly elastic and linearly plastic regions. (14 pts) (MP) 150 020 630