Mechanics And Electrical Characteristic Analysis Of Cancellous Bone

There are a lot of biological materials with high quality mechanical properties in the nature，andhuman bone is one of them. The bones get strength, stiffness and toughness by the good compositeand structure. Cancellous bone exists extensively inside and at the ends of bones.Cancellous bone’s same microstructure as trabecular makes the whole bone get goodenergy-absorption ability. In this article, the homogenization method is used in the cellular models ofgood energy-absorption characteristics to calculate the related basic data and understand thecorresponding performance of the structure. With the development of science and technology, simpleand light materials are not satisfying any more. People become more concerning with material ofcertain kinds of good characteristics combining. The porous media and hexagon body structure inthis research can carry axial force, bending moment and shear force and can be used in the compositelaminates as a single absorbing layer, which greatly improves the mechanical properties of thelaminated plates.In this article, quantitative research of cancellous bone’s piezoelectric properties of is carried.Four simplified models come out by simplifying the cancellous bone’s microstructure model.According to the unit cell model electric force analysis under the finite element method, this articleanalyzes how trabecular bone in external treatment under the influence of wave energy chances indisplacement, stress and strain, electric potential, and get relevant theoretical basis of shock wavetreatment of osteoporosis. Due to the electric properties of cancellous bone, it can have positiveeffects on the treatment for osteoporosis and other bone diseases.Energy-absorbing elements used in engineering are usually composite tubes. Compositematerials which are widely used city water supply and sewage disposal have some advantages likelight weight, high strength, good stiffness, low resistance in liquid transportation, clean, low cost andso on.. Similar with the structure of model3, this paper imitated the Harvard-pipe to produce anumber of glass fiber and polyester resin composite tubes. Paper studied the effects of layer way andterminal trigger mode on the energy-absorbing. It also studied the process and mechanism ofsquashing the laminated composite’s shell structure. Used the impact load to do the impact test onthese cylindrical shells, we can find that these tubes which layer way is60°have superior energyabsorption capability. All trigger modes, no matter inner or outer chamfer, sharp corner and rounded corner, can reduce the initial peak, and can protect the objects by absorbing energy. Meanwhile,though the test we got a deeper understanding of the energy-absorbing characters and structurefeatures of Harvard-pipe.