基于折纸技术制造的蜂巢结构的力学性能

蜂巢夹层结构材料因具有高强度、轻质量的优势正在逐渐取代传统的结构材料，并广泛地应用于汽车、船舶以及航空航天领域。然而，这种材料在制造过程中生产工艺比较复杂，特别是针对具有不规则断面的蜂巢结构，容易在弯曲、切削等二次加工时出现制造上的缺陷和损伤，从而影响结构本身的力学性能。为避免二次加工，文章利用折纸技术的原理，设计并制作了2种蜂巢结构试样。通过弯曲和压缩性能测试，研究了蜂巢结构的变形行为和力学性能。在室温下获得的载荷-位移曲线表明，变形过程大致分为线弹性、塑性平台和致密化3个区域。实验结果表明:蜂巢结构的弯曲刚度和抗压强度分别约为0.32 kN·m2和0.39 MPa；揭示了基于折纸技术制造的蜂巢结构具有良好的力学性能。

Mechanical Properties of Honeycomb Structures Fabricated Based on Origami Technology

Honeycomb sandwich structure with high strength and light weight is increasing being used to replace traditional materials, which is widely applied in automotive, shipping and aerospace fields. However, because its production process is very complicated, especially for the honeycomb structure with irregular sections, it is easy to appear defects and damages during secondary processing such as bending and cutting. To avoid secondary processing, origami technology is proposed, and two types of honeycomb sandwich structures are designed and produced. The deformation behaviors and mechanical properties of honeycomb structures were investigated by the three-point bending test and flatwise compressive test. The load-displacement curve obtained at the room temperature indicates that the deformation process can be approximately categorized into three zones, namely linear-elastic zone, plastic-plateau zone and densification zone. The experimental results show that the bending stiffness and compressive strength of the honeycomb structures are approximately 0.32 kN·m2 and 0.39 MPa, respectively; the honeycomb structure manufactured based on origami technology has good mechanical properties.