Femur Bone Structure

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Introduction 2. Femur is largest and longest bone in human body. Femur is strongest in compression when compared to the tension and shear. The structure of femur is anisotropy , but for analytical calculation purpose .It is considered as is tropic material. The properties of femur aften compared to the man-made materials. The femur mechanical properties are very potent strong, and impressive. Biomechanics is the application of mechanical principles on living organisms. The study of bio mechanical based on the mechanical properties , mechanisms and simulation of structures also comes under bio mechanics category. A complex hierarchical structure is a good example. This is the bone structure. COMPOSITION OF FEMUR BONE & ITS STRUCTURE Femur…show more content…
Once the load exceeds the expected range that is beyond the zone of plastic deformation, the dissipation of energy. Though the fracture at peculiar locations where the stress is maximum. From the stress-strain curve we know that the yield point represents the safe load condition where the fracture occurs at the ultimate condition so the process of changing the region of elastic to the region plastic is represented as point of yield (or) yield point. The mechanical properties of the femur bone is expressed in two ways that is the properties of hard(or)cortical bone and the properties of spongy bone. Perhaps the structure of the femur bone is slitly convenes for different purposes and the material properties also composed in the same way. The hard bone is very strong when the load is applied in the longitudinal direction because the cortical bone is a hollow shaft which is strong in compression than transverse direction of applied load. The direction and the orientation of forces present in the convenes of the femur bone is all about principle stresses present in the…show more content…
Femur also exhibits fatigue nature, when the load applied is continuously below the yield point it creates the cracks which leads to the failure of the material below the expected limit. The propagation of micro-crack formation in the bone material is responsible for the fatigue resistance, if the restoration capacity of these cracks is more then the fatigue resistance also high if the healing nature is controlled then resistance to absorb the energy within the bone increases. Suppose the time to repair the micro-crack formation is less, the bone becomes very sensitive in failure due to fatigue. This is seen in athletes they do not provide much time to recover (or) restore the micro-crack damages under continues loads. Modulus: Femur bone is considered as fiber composite because of inorganic formation of matrix and fibers in terms of collagen. Generally composite material is defined as the combination of two or more materials, the composition in any composite material is composed of different components. Mix true’s rule: Eaxi = (vf) Efi + (1-(vf)) Emat Mix true’s inverse

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