Functionally Graded Biomimetic Energy Absorption Concept Development for Transportation Systems
| 项目名称： | Functionally Graded Biomimetic Energy Absorption Concept Development for Transportation Systems |
| 摘要： | This study shows how many lessons can be learned from a study of biological systems that are applicable to engineering applications. The proposed research applies the observations from the study of tendon-to-bone insertion site conducted by PI with his colleagues at the School of Medicine at Washington University to a development of a robust and resilient functionally graded cylindrical sandwich shock absorber. The concept utilizes concentric foam shells of variable mass density constrained within a stiffer outer shell that reduces radial deformations of the assembly under axial shock. As was demonstrated for both biological tissues (e.g., the tendon-to-bone insertion site) and for engineering materials (metals, ceramics, composites), a lower stiffness material possesses a higher resilience and toughness. In the considered concept, the project maximizes the energy dissipation of the assembly by grading the foam shells utilizing variable mass density (and accordingly, variable stiffness and strength) of foam. The energy absorption is maximized, while maintaining the prescribed deformation as well as the necessary strength of the system. |
| 状态： | Completed |
| 资金： | 23203.00 |
| 资助组织： | Missouri University of Science and Technology, Rolla |
| 开始时间： | 20130501 |
| 实际结束时间： | 20131231 |
| 主题领域： | Bridges and other structures；Marine Transportation；Public Transportation；Railroads |
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