Comparative Analysis of Bend Dominated and Stretch Dominated Titanium Lattice Structures

弯曲主导和拉伸主导的钛晶格结构的比较分析

• 批准号: 1539139
• 负责人: Harold Halliday
• 金额: $ 29.03万
• 依托单位: Navajo Technical University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2016
• 资助国家: 美国
• 起止时间: 2016-06-01 至 2019-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1539139&HistoricalAwards=false
• 关键词: Comparative; Analysis; Bend; Dominated; Stretch

A goal of the Tribal Colleges and Universities Program (TCUP) is to increase the science, technology, engineering and mathematics (STEM) instructional and research capacities of specific institutions of higher education that serve the Nation's indigenous students. Expanding the STEM curricular offerings at these institutions expands the opportunities of their students to pursue challenging, rewarding careers in STEM fields, provides for research studies in areas that may be culturally significant, and encourages a community and generational appreciation for science and mathematics education. This project aligns directly with that goal, and moreover will increase the body of knowledge on the material properties of sandwich beam parts created by selective laser melting using titanium.Navajo Technical University (NTU) will examine data from two different designs and their meanings and lay the groundwork for comparing other sandwich beam designs, thereby leading to designs for optimum strength-to-weight ratio. The research will explore two constructs, stretch-dominated (truss-type lattice cells) and bend-dominated (dodecahedron-type lattice cells) beam structures, using simple supported bending experiments. The research will explore creating and simulating 3D computer models of the test specimens using off-the-shelf analysis software. NTU will collaborate with Lawrence Livermore National Laboratory (LLNL), which will include but not be limited to guiding appropriate structure designs for testing and testing process data collection. Another aspect of testing will use a high-speed camera system to gain full view analysis of the forces, force vectors and in-process white light scanning.The project also uses cutting edge techniques that capture real-time force data to plot accordingly, which will provide a more expansive interpretation of test data. Comparing test specimens created on two different machines with dissimilar surface finishes may demonstrate an impact on the test specimens' ability to resist bending forces.

部落学院和大学计划（TCUP）的目标是增加科学，技术，工程和数学（STEM）的教学和研究能力和研究能力的高等教育机构，这些机构为国家土著学生提供服务。在这些机构扩大STEM课程产品，扩大了学生在STEM领域中追求具有挑战性，奖励职业的机会，为可能具有文化意义的领域提供研究，并鼓励对科学和数学教育的社区和世代相传。该项目直接与该目标保持一致，此外，将增加有关使用钛的选择性激光熔化创建的三明治束零件的材料特性的知识。Navajo技术大学（NTU）将研究来自两种不同设计及其含义的数据，并为其他三明治束设计提供了基础，从而为其他夹心设计进行了比较，从而使设计可达到最佳的强度，以达到最佳的强度降低。该研究将使用简单的支持的弯曲实验探索两个构造，分别为伸展的（桁架型晶格细胞）和弯曲为主的（十二面体型晶格）束结构。该研究将使用现成的分析软件探索测试标本的3D计算机模型。 NTU将与Lawrence Livermore国家实验室（LLNL）合作，其中包括但不限于指导适当的结构设计，用于测试和测试过程数据收集。测试的另一个方面将使用高速摄像头系统来获得对力，力向量和过程中的白光扫描的完整视图分析。该项目还使用尖端技术来捕获实时力量数据以相应的绘制，这将提供对测试数据的更广泛的解释。比较在两台不同的机器上产生的测试样品具有不同的表面饰面可能会证明对测试标本抵抗弯曲力的能力有影响。