Frikha Sirine, Giraud-Moreau Laurence, Bouguecha Anas, Haddar Mohamed
Life Assesment of Structures, Materials, Mechanics and Integrated Systems (LASMIS), University of Technology of Troyes, 12 Rue Marie Curie, 10004 Troyes, France.
Laboratory of Mechanics, Modeling and Production (LA2MP), National Engineers School of Sfax, Route de Soukra, Sfax 3038, Tunisia.
Materials (Basel). 2022 May 10;15(10):3442. doi: 10.3390/ma15103442.
Advanced manufacturing techniques aimed at implants with high dependability, flexibility, and low manufacturing costs are crucial in meeting the growing demand for high-quality products such as biomedical implants. Incremental sheet forming is a promising flexible manufacturing approach for rapidly prototyping sheet metal components using low-cost tools. Titanium and its alloys are used to shape most biomedical implants because of their superior mechanical qualities, biocompatibility, low weight, and great structural strength. The poor formability of titanium sheets at room temperature, however, limits their widespread use. The goal of this research is to show that the gradual sheet formation of a titanium biomedical implant is possible. The possibility of creative and cost-effective concepts for the manufacture of such complicated shapes with significant wall angles is explored. A numerical simulation based on finite element modeling and a design process tailored for metal forming are used to complete the development. The mean of uniaxial tensile tests with a constant strain rate was used to study the flow behavior of the studied material. To forecast cracks, the obtained flow behavior was modeled using the behavior and failure models.
旨在制造具有高可靠性、灵活性和低成本的植入物的先进制造技术，对于满足生物医学植入物等高质量产品不断增长的需求至关重要。增量板材成形是一种很有前景的柔性制造方法，可使用低成本工具快速制作金属板材部件的原型。钛及其合金因其优异的机械性能、生物相容性、低重量和高结构强度，被用于制造大多数生物医学植入物。然而，钛板在室温下的成形性较差，限制了它们的广泛应用。本研究的目的是证明钛生物医学植入物的渐进板材成形是可行的。探索了制造具有显著壁角的此类复杂形状的创新且具有成本效益的概念的可能性。基于有限元建模的数值模拟和针对金属成形量身定制的设计过程被用于完成开发。使用恒定应变速率的单轴拉伸试验的平均值来研究被研究材料的流动行为。为了预测裂纹，使用行为和失效模型对获得的流动行为进行建模。
