A novel P-lattice was proposed to meet the engineering needs of combined high specific stiffness, specific strength and superior energy absorption characteristic. The effective elastic properties and plastic strength of the novel P-lattice were adequately investigated through numerical simulation. Results indicated that more superior mechanical properties could be obtained in the proposed novel P-lattice when compared with those of the traditional lattices. Besides, the quasi-static energy absorption of the novel P-lattice was also studied and compared with the competing topologies. A higher energy absorption characteristic was obtained in the proposed novel P-lattice for the reason that three different deformation features, i.e. compression deformation, bending deformation and torsional deformation, existed in the P-lattice under loading.

提出了一种新型的P晶格，以满足高比刚度，比强度和优异的能量吸收特性的工程需求。通过数值模拟充分研究了新型P晶格的有效弹性和塑性强度。结果表明，与传统晶格相比，所提出的新型P晶格可以获得更好的机械性能。此外，还研究了新型P晶格的准静态能量吸收，并将其与竞争拓扑进行了比较。所提出的新型P晶格具有较高的能量吸收特性，这是因为在载荷下P晶格中存在三种不同的变形特征，即压缩变形，弯曲变形和扭转变形。