金属纤维烧结毡力学本构关系的实验研究  

Experimentally Study on the Constitutive Relations Between Mechanical Properties and Relative Density of Sintered Metal Fiber Felt

作　　者：马军 王建忠[2] 李爱君[2] 葛渊[2] 宋卫东[3] 汤慧萍[2] 金峰[1] Ma Jun;Wang Jianzhong;Li Aijun;Ge yuan;Song Weidong;Tang Huiping;Jin Feng(State Key Laboratory for Strength and Vibration of Mechanical Structures,Xi'an Jiaotong University,Xi'an 710049,China;State Key Laboratory of Porous Metal Materials,Northwest Institute for Nonferrous Metal Research,Xi'an 710016,China;State Key Laboratory of Explosion Science and Technology,Beijing Institute of Technology,Beijing 100081,China)

机构地区：[1]西安交通大学机械结构强度与振动国家重点实验室,陕西西安710049 [2]西北有色金属研究院金属多孔材料国家重点实验室,陕西西安710016 [3]北京理工大学爆炸科学与技术国家重点实验室,北京100081

出　　处：《稀有金属材料与工程》2018年第12期3710-3715,共6页Rare Metal Materials and Engineering

基　　金：国家自然科学基金(51134003);爆炸科学与技术国家重点实验室(北京理工大学)开放课题(KFJJ17-14M)

摘　　要：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。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 suggests that the in-plane deformation of the fiber-ligaments is stretching-dominated.

关 键 词：金属纤维烧结毡 力学性能 本构关系 拉伸主导变形 

分 类 号：TG142.71[一般工业技术—材料科学与工程]