Department of Plastics Engineering, University of Massachusetts Lowell, One University Ave, Lowell, MA, 01854, USA.
Sci Rep. 2022 Aug 30;12(1):14736. doi: 10.1038/s41598-022-19053-3.
Mechanical properties of additively manufactured structures fabricated using material extrusion additive manufacturing are predicted through combining thermal modeling with entanglement theory and molecular dynamics approaches. A one-dimensional model of heat transfer in a single road width wall is created and validated against both thermography and mechanical testing results. Various model modifications are investigated to determine which heat transfer considerations are important to predicting properties. This approach was able to predict tear energies on reasonable scales with minimal information about the polymer. Such an approach is likely to be applicable to a wide range of amorphous and low crystallinity thermoplastics.
通过将热建模与缠结理论和分子动力学方法相结合，预测了使用材料挤出增材制造制造的增材制造结构的机械性能。创建了一个单道路宽度壁的一维传热模型，并通过热成像和机械测试结果进行了验证。研究了各种模型修改，以确定哪些传热考虑因素对预测性能很重要。该方法能够在最小化聚合物信息的情况下，在合理的尺度上预测撕裂能。这种方法可能适用于广泛的非晶态和低结晶度热塑性塑料。
