Faustini Mario C, Neptune Richard R, Crawford Richard H, Rogers William E, Bosker Gordon
Department of Mechanical Engineering, The University of Texas, Austin, TX 78712-0292, USA.
IEEE Trans Neural Syst Rehabil Eng. 2006 Sep;14(3):304-10. doi: 10.1109/TNSRE.2006.881570.
Selective laser sintering (SLS) is a powerful manufacturing technology that does not require part-specific tooling or significant human intervention and provides the ability to easily generate parts with complex geometric designs. The present work focuses on developing a manufacturing framework using this technology to produce subject-specific transtibial amputee prosthetic sockets made of Duraform PA, which is a nylon-based material. The framework includes establishing an overall socket design (using the patellar-tendon bearing approach), performing a structural analysis using the finite element method (FEM) to ensure structural reliability during patient use, and validating the results by comparing the model output with experimental data. The validation included quantifying the failure conditions for the socket through a series of bending moment and compression tests. In the case study performed, the FEM results were within 3% of the experimental failure loads for the socket and were considered satisfactory.
选择性激光烧结（SLS）是一种强大的制造技术，它不需要特定于零件的工具或大量人工干预，并且能够轻松制造具有复杂几何设计的零件。目前的工作重点是开发一种使用该技术的制造框架，以生产由Duraform PA（一种尼龙基材料）制成的针对特定患者的经胫截肢者假肢接受腔。该框架包括建立整体接受腔设计（采用髌腱承重方法），使用有限元方法（FEM）进行结构分析以确保患者使用期间的结构可靠性，并通过将模型输出与实验数据进行比较来验证结果。验证包括通过一系列弯矩和压缩试验量化接受腔的失效条件。在所进行的案例研究中，有限元方法的结果与接受腔的实验失效载荷相差在3%以内，被认为是令人满意的。
