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衝撃圧縮荷重下におけるウシ海綿骨の力学的挙動 (小特集:材料・構造の衝撃問題)
衝撃圧縮荷重下におけるウシ海綿骨の力学的挙動 (小特集:材料・構造の衝撃問題)
Mechanical Behaviour of Bovine Trabecular Bone Subjected to Impact Compressive Load
小林, 公一
田辺, 裕治
原, 利昭
日本機械学会
本文データは学会の許諾に基づくCiNiiからの複製である
Biomechanics
Visco Elasticity
Stress Relaxation
Creep
Dynamic behavior
Trabeceular Bone
Split Hopkinson Pressure Bar
Dynamic compressive behaviour of bovine trabecular bone was investigated. Compression tests on cylindrical specimens of bovine distal femurs were carried out using the split-Hopkinson pressurebar (SHPB) technique at strain rates ranging from 100 to 700 s^<-1>. Quasi-static compression tests were also performed using an Instron-type materials testing machine at strain rates of 2×10^<-4> and 2×10^<-3> s^<-1>. Stiffness and ultimate strength were greater at greater apparent density and at higher strain rate. Both stress relaxation and creep functions were determined based on stress-time and strain-time relations obtained by the SHPB tests. Relaxation time and retardation time had no correlation with apparent density. The three-element standard linear solid model was then validated by these functions. The elastic spring stiffness of the model, E_1,had a strong positive correlation with apparent density, while the elastic spring stiffness, E_2,and the viscosity coefficient, η, showed less correlation with apparent density. No significant differences in the relaxation and retardation times, the elastic spring stiffnesses, E_1,E_2,and the viscosity coefficient, η, were observed between the specimens with and without marrow.
日本機械学会
1997-12
jpn
journal article
http://hdl.handle.net/10191/5710
https://niigata-u.repo.nii.ac.jp/records/3686
http://ci.nii.ac.jp/naid/110002374364
AN0018742X
03875008
日本機械学会論文集. A編
日本機械学会論文集. A編
63
616
2624
2630
https://niigata-u.repo.nii.ac.jp/record/3686/files/9_0008.pdf
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2019-07-30