金属纤维烧结毡力学本构关系的实验研究

Experimentally study on the constitutive relations betweenmechanical properties and relative density of sintered metal fiber felt

摘要:

本文实验研究了316L不锈钢纤维烧结毡的变形能,杨氏模量,强度等力学性能与材料相对密度之间的本构关系。研究表明金属纤维烧结毡沿面内方向的拉伸断裂能和压缩变形能与相对密度分别成线性关系和幂大于1的抛物线关系。金属纤维烧结毡沿面内方向拉伸或压缩时的模量和强度与材料相对密度均成线性关系。这反映了金属纤维烧结毡受面内方向应力时结点间纤维骨架以拉伸(压缩)变形为主。

Abstract:

The constitutive relations between the deformation energy, Young’s modulus, strength and the relative density of sintered 316L stainless steel fiber felt were studied. The in-plane tensile fracture energy varies linearly with relative density, while the in-plane compressive energy varies nonlinearly. The in-plane Young’s modulus and strength of sintered metal fiber felt show linear dependence on relative density. The linear in-plane property scaling of sintered metal fiber felt suggest that the in-plane deformation of the fiber-ligaments is stretching-dominated.