title: Dynamical study of couple stress effects in human compact bone.
abstract: Torsional resonance experiments performed on wet human compact bone disclose effects due to couple stress. The characteristic length, which is an additional material coefficient which appears in couple-stress theory, is of the order of the size of osteons and appears to be smaller at high frequencies than at low frequencies. The presence of couple-stress effects implies a reduction in the stress concentration factor around holes, particularly small holes.
mesh_terms: D001842:Bone and Bones / Q000033:anatomy & histology / Q000502:physiology*; D004548:Elasticity; D006801:Humans; D012044:Regression Analysis; D013314:Stress, Mechanical; D014732:Vibration